Write an example of a number with a first non-zero digit six place values away from the decimal point. Then, write this number in scientific notation.

Answers

Answer 1

Answer:

The answer to your question is:  7.00 x 10⁶

Step-by-step explanation:

- Write a number with a non-zero digit                           7

- Six place values away from the decimal point             7 000 000.00

-Write this number in scientific notation                          7.00 x 10⁶

Answer 2

An example of a number with its first non-zero digit six places away from the decimal is 0.000001, which is written in scientific notation as 1 × 10^-6 by moving the decimal six places to the right.

An example of a number with its first non-zero digit six place values away from the decimal point is 0.000001. To write this number in scientific notation, we follow the standard convention: moving the decimal point such that there is only one non-zero digit to the left of the decimal point and counting the number of places the decimal point has moved to determine the power of 10.

In this case, we move the decimal point six places to the right, which gives us 1 × 10^-6. This means that 0.000001 in scientific notation is expressed as 1 × 10^-6 .


Related Questions

A box with a square base is wider than it is tall. In order to send the box through the U.S. mail, the width of the box and the perimeter of one of the (nonsquare) sides of the box can sum to no more than 117 in. What is the maximum volume for such a box? Maximum Volume =

Answers

Final answer:

The maximum volume of such a box is determined by forming an equation that represents the condition about the width of the box and the perimeter of one of its nonsquare sides, then finding the maximum value of the volume function obtained by differentiating the function and setting it equal to zero.

Explanation:

The subject of this question is mathematics related to box dimensions, more specifically the geometry dealing with volume of a box. The box in question has a square base, which means the length and width are the same, let's call this x. Because the box is wider than it is tall, we know it's height, let's call it h, is less than x.

According to the question, the width of the box and the perimeter of one of the nonsquare sides of the box sum to no more than 117 inches. The perimeter of a nonsquare side (a rectangle) is given by 2(x+h), and if we add x (the width of the box) to this, we get x + 2(x+h) which must be less than or equal to 117. Simplifying gives 3x + 2h <= 117

We are interested in the volume of the box which can be determined by multiplying the length, width, and height (V = x*x*h). This can be simplified to V = x^2 * h. To get the maximum volume, we should make h as large as possible. Substituting 3x into the original inequality for h (since 3x <= 117), we get h <= 117 - 3x. Thus, the volume V becomes V = x^2 * (117 - 3x).

To find the maximum volume, we take the derivative of the volume function (V = x^2 * (117 - 3x)) with respect to x and set it equal to zero. This will give us the value of x for which the volume is maximum. Once we have the value of x, we substitute it back into the volume function to get the maximum volume.

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The maximum volume for such a box is 152,882.5 cubic inches

We have a box with a square base, where the width w is greater than the height h. The constraint given is that the width of the box plus the perimeter of one of the non-square sides cannot exceed 117 inches.

The perimeter of one of the non-square sides is 2h + 2d, where d is the depth. Therefore, the constraint equation becomes:

[tex]\[ w + 2h + 2d \leq 117 \][/tex]

Since the base is square, w = h. Let's denote this common value as s. So, the constraint equation simplifies to:

[tex]\[ 2s + 2d \leq 117 \][/tex]

Now, we need to express the volume of the box in terms of s and d:

[tex]\[ V = s^2d \][/tex]

We want to maximize V subject to the constraint [tex]\(2s + 2d \leq 117\).[/tex]

To proceed, let's solve the constraint equation for d:

[tex]\[ d \leq \frac{117 - 2s}{2} \][/tex]

Since d must be greater than zero, we have:

[tex]\[ 0 < d \leq \frac{117 - 2s}{2} \][/tex]

Now, we substitute [tex]\(d = \frac{117 - 2s}{2}\)[/tex] into the volume equation:

[tex]\[ V(s) = s^2 \left( \frac{117 - 2s}{2} \right) \]\[ V(s) = \frac{1}{2}s^2(117 - 2s) \][/tex]

To find the maximum volume, we'll take the derivative of V(s) with respect to s, set it equal to zero to find critical points, and then check for maximum points.

[tex]\[ V'(s) = \frac{1}{2}(234s - 6s^2) \]\\Setting \(V'(s)\) equal to zero:\[ \frac{1}{2}(234s - 6s^2) = 0 \]\[ 234s - 6s^2 = 0 \]\[ 6s(39 - s) = 0 \][/tex]

This gives us two critical points: s = 0 and s = 39. Since s represents the width of the box, we discard s = 0 as it doesn't make physical sense.

Now, we need to test s = 39 to see if it corresponds to a maximum or minimum. Since the second derivative is negative, s = 39 corresponds to a maximum.

So, the maximum volume occurs when s = 39 inches.

Substitute s = 39 into the constraint equation to find d:

[tex]\[ 2(39) + 2d = 117 \]\[ 78 + 2d = 117 \]\[ 2d = 117 - 78 \]\[ 2d = 39 \]\[ d = \frac{39}{2} \]\[ d = 19.5 \][/tex]

Therefore, the maximum volume of the box is achieved when the width and height are both 39 inches, and the depth is 19.5 inches. Let's calculate the maximum volume:

[tex]\[ V_{\text{max}} = (39)^2 \times 19.5 \]\[ V_{\text{max}} = 152,882.5 \, \text{cubic inches} \][/tex]

So, the maximum volume for such a box is 152,882.5 cubic inches.

Part 1: Read this problem and then solve, explaining how you do each step, as if you were explaining to a younger student. You will want to draw a picture, and or make a table.

Ken and Barbie are going to add a deck with a fancy railing to their dream house. The deck needs to have a total area of 100 square feet. They will only need a railing on three sides of the deck, since it will be connected to the house on one side. The deck costs $12 per square foot and the railing costs $9 per linear foot. What could the length and width of the deck be to keep the cost reasonable? Find the total cost. There is more than one correct answer. Remember to explain!!

Answers

Answer:

12' by 8'4" . . . . $145813'4" by 7'6" . .  $145515' by 6'8" . . . . $1455

Step-by-step explanation:

The cost of the area of the deck is fixed, because the area is fixed. It will be ...

  ($12/ft²)×(100 ft²) = $1200

__

The cost of the railing is proportional to its length, so it will be minimized by minimizing the length of the railing. If the length of it is x feet parallel to the house, then the length of it perpendicular to the house (for a deck area of 100 ft²) is 100/x.

The total length of the railing is ...

  r = 2(100/x) + x

We can minimize this by setting its derivative with respect to x equal to zero:

  dr/dx = -200/x² +1 = 0

Multiplying by x² and adding 200, we get ...

  x² = 200

  x = √200 ≈ 14.142

So, the minimum railing cost will be had when the deck is 14.142 ft by 7.071 ft. That railing cost is about ...

  $9 × (200/√200 +√200) ≈ $254.56

__

We might imagine that dimensions near these values would have almost the same cost. Here are some other possibilities:

13'4" by 7'6" ⇒ $255.0015' by 6'8" ⇒ $255.0012' by 8'4" ⇒ $258.0010' by 10' ⇒ $270.00

__

Then the total cost for a couple of possible deck sizes will be $1200 plus the railing cost, or ...

12' by 8'4" . . . . $145813'4" by 7'6" . .  $145515' by 6'8" . . . . $1455

_____

Note on the solution process

It can be helpful to use a spreadsheet or graphing calculator to do the repetitive computation involved in finding suitable dimensions for the deck.

If Mary pay $3695.20for principal and interest every month for 30 years on her $110,000 loan, how much interest will she pay over the life of the loan?

Answers

Answer:

  $1,220,200

Step-by-step explanation:

The total of Mary's payments is ...

  $3695.20/mo × 30 yr × 12 mo/yr = $1,330,200

The difference between this repayment amount and the value of her loan is the interest she pays:

  $1,330,200 -110,000 = $1,220,200 . . . total interest paid

_____

Mary's effective interest rate is about 40.31% per year--exorbitant by any standard.

The number of visitors to a park is expected to follow the function v(x) = 8(x − 1), where x is the number of days since opening. On the first day, there will be a ceremony with 32 people in attendance. What is the function that shows total visitors, including the ceremony?

Answers

Answer:

[tex]v(x)=32+8(x-1)[/tex]

Step-by-step explanation:

We have been given that the number of visitors to a park is expected to follow the function [tex]v(x)=8(x-1)[/tex], where x is the number of days since opening. On the first day, there will be a ceremony with 32 people in attendance.

The total number of visitors including the ceremony would be number of people on ceremony plus people at x number of days since opening that is:

[tex]v(x)=32+8(x-1)[/tex]

Therefore, the function [tex]v(x)=32+8(x-1)[/tex] total visitors, including the ceremony.

A park ranger uses exponential functions to model the population of two species of butterflies in a state park.


The population of species A, x years from today, is modeled by function f.


f(x) = 1,400(0.70)x


The population of species B is modeled by function g, which has an initial value of 1,600 and increases by 20% per year.


Which statement correctly compares the functions modeling the two species?


A.

The populations of both species are increasing, but the population of species B is growing at a faster rate than species A.

B.

The population of species A is decreasing, and it had the greater initial population.

C.

The populations of both species are increasing, but the population of species A is growing at a faster rate than species B.

D.

The population of species A is decreasing, and it had the smaller initial population.

Answers

Answer:D

THE POPULATION OF SPECIES A IS DECREASING. AND IT HAD THE SMALLER INITIAL POPULATION

The statement that correctly compares the given functions is - 'The population of species A is decreasing, and it had the smaller initial population.'

The correct answer is an option (D)

What is an exponential function?

"A function of the form [tex]f(x)=b^x[/tex] where b is constant."

What is exponential growth formula?

" [tex]f(x) = a (1 + r)^x[/tex]

where a is the initial value

r is the growth rate

x is time"

For given question,

We have been given a exponential function [tex]f(x) = 1400(0.70)^x[/tex]

This function represents the population of species A, x years from today.

The population of species B is modeled by function g, which has an initial value of 1,600 and increases by 20% per year.

a = 1600

r = 20%

 = 0.2  

Using the exponential growth formula the exponential function that represents the population of species B would be,

[tex]g(x) = 1600 (1 + 0.2)^x\\\\g(x)=1600(1.02)^x[/tex]

We know that, if the factor b ([tex]f(x)=a\bold{b}^x[/tex]) is greater than 1 then the exponential function represents the growth and if b < 1 then the exponential function represents the decay of population.

From functions f(x) and g(x) we can observe that, the population of species A is decreasing, and it had the smaller initial population.

So, the correct answer is an option (D)

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1) A contractor needs to know the height of a building to estimate the cost of a job. From a point 96 feet away from the base of the building the angle of elevation to the top of the building is found to be 46 . Find the height of the building. Round your answer to the hundredths place.

Answers

Answer:

The answer to your question is: height = 99.41 feet.

Step-by-step explanation:

Data

distance = 96 feet away from a building

angle = 46

height = ?

Process

Here, we have a right triangle, we know the angle and the adjacent leg, so let's use the tangent to find the height.

tan Ф = opposite leg / adjacent leg

opposite leg = height = adjacent leg x tan Ф

height = 96 x tan 46

height = 96 x 1.035

height = 99.41 feet.

The height of the building is approximately 77.55 feet.

To find the height of the building, we can use trigonometry, specifically the tangent function, which relates the angle of elevation to the opposite side (the height of the building) and the adjacent side (the distance from the point of observation to the base of the building).

Given:

- The distance from the point of observation to the base of the building is 96 feet.

- The angle of elevation to the top of the building is 46 degrees.

Using the tangent function:

[tex]\[ \tan(\theta) = \frac{\text{opposite}}{\text{adjacent}} \][/tex]

[tex]\[ \tan(46^\circ) = \frac{h}{96} \][/tex]

To find the height [tex]\( h \)[/tex], we solve for[tex]\( h \)[/tex]:

[tex]\[ h = 96 \times \tan(46^\circ) \][/tex]

Using a calculator to find the tangent of 46 degrees and multiplying by 96, we get:

[tex]\[ h \approx 96 \times \tan(46^\circ) \approx 96 \times 0.9919 \approx 77.55 \text{ feet} \][/tex]

asap asap asap plzzzz help

Answers

Answer: x=7

Step-by-step explanation:

Ok, so first put SR/ML=QR/KL (not dividing)

Then, fill in the blanks, x/5=4.2/3

Then, cross multiply leaving the equals sign there

x*3=4.2*5

Then, solve for x

3x=21

— —

3. 3

Lastly you get your answer of

X=7

Hope I helped

Answer:

The value of x is 7.

Step-by-step explanation:

Consider the provided figure.

It is given that both the pentagons are similar.

That means the ratio of the sides will be same and we need to find the value of x.

[tex]\frac{NM}{TS}=\frac{ML}{SR}[/tex]

Substitute the respective values in the above formula.

[tex]\frac{4}{5.6}=\frac{5}{x}[/tex]

[tex]4x=5\times 5.6[/tex]

[tex]x=\frac{28}{4}[/tex]

[tex]x=7[/tex]

Hence, the value of x is 7.

How to find the probability? Please show your work. Thanks!

Answers

The event of the machine working is [tex]A\cap B\cap C\cap D[/tex], and since the components operate independently, we have

[tex]P(A\cap B\cap C\cap D)=P(A)P(B)P(C)P(D)[/tex]

so just multiply the given probabilities together,

[tex]P(A\cap B\cap C\cap D)=0.99^2\cdot0.94\cdot0.93\approx0.8568[/tex]

Help me please!!!!!​

Answers

Answer:

Given the equation 8 + 3y = 2·(x+5)

slope=2/3

y- intercept= (0, 2/3) or y= 2/3.

x-intercept=  (-1, 0) or x = -1.

Step-by-step explanation:

Given 8 + 3y = 2·(x+5) ⇒ 8 + 3y = 2x + 10 ⇒ 3y = 2x + 10 -8 ⇒ 3y = 2x + 2

⇒ y = (2/3)x + 2/3.

Here slope = 2/3 and y-intercept = 2/3.

To find x-intercept, we have to calculate the value of "x" when y =0.

⇒ 0 = (2/3)x + 2/3 ⇒ 0 - 2/3 = (2/3)x ⇒ -2/3 = (2/3)x ⇒ (-2/3)/(2/3)= x

x =-1.

Answer:here's ur answer

Step-by-step explanation:

20 POINTS AND BRAINLIEST PLZ HELP
Given f(x) and g(x) = f(x + k), use the graph to determine the value of k.


A. −4
B. −2
C. 2
D. 4

Answers

Answer:

4

Step-by-step explanation:

Recall that for a function f(x) and for a constant k

f(x+k) represents a horizontal translation for the function f(x) by k units in the negative-x direction.

Hence f(x+k) is simply the graph of f(x) that has been moved left (negative x direction) by k units.

From the graph, we can see that g(x) = f(x+k) is simply the graph of f(x) that has been moved 4 units in the negative x-direction.

hence K is simply 4 units.

Answer:

Step-by-step explanation:

Yes I'd have to agree with @previousbrainliestperson

I'd go with solid 4

The function -6t^2+5t+56=h is used to calculate the amount of time (t) in seconds it takes for an object to reach a certain height (h). According to this function, how many seconds will it take for the object to hit the ground?

Answers

Answer:

3.5 seconds

Step-by-step explanation:

h(t) is a quadratic function, it indicate that the object start with initial height (56).

If you want to know when the object hit the ground (h=0) you have to use the quadratic formula [tex](-b +- \sqrt{b^{2}-4ac } )/2a[/tex] and take the positive root (the negative shows a negative time, so we have to discard it).

In this case: a=-6, b=5 and c=56, then the solve is 7/2=3.5

The _____________ is the most important descriptive statistic for a categorical variable. It is calculated by dividing the number of observations in the category of interest by n, the total number of observations in all categories combined.

Answers

Answer:

Proportion

Step-by-step explanation:

Proportion is just the division of the data that meets the description, between the total number of data present in the study.

For example, let's suppose that we have a tiger, a lion, a sheep, a cow and a horse, and we want to know the proportion of animals that eat meat, then, only 2 out of 5 of those eat meat, the tiger and the lion, meaning [tex]\frac{2}{5}[/tex], which would be the proportion, or 0.40

Jay has a part time job, and he earns $6.80 per hour. The taxes withheld from his weekly paycheck are 28% of his total earnings:if he works 10 hours in one week,how much I withheld for taxes.

Answers

Answer:

Tax = $19.04

Step-by-step explanation:

Hourly wage = $6.8/hr

hours worked = 10

Tax = 28%

[tex]total \: earnings =6.8 \times 10 = 68 \\ amount \: of \: tax = 68 \times 28\% = 68 \times \frac{28}{100} \\ = 19.04[/tex]

Bobby decides to sell lemonade on a hot summer day. If Bobby sells 20 glasses of lemonade for $0.20 per cup, and his average total cost is $0.17, what are Bobby's economic profits for the day? a. $0.60 b. $0.00 c. $0.20 d. $0.80

Answers

Bobby's economic profit for the day is $0.60, calculated by subtracting his total cost of $3.40 from his total revenue of $4.00. Here option A is correct.

To calculate Bobby's economic profits, we first need to understand the concept of economic profit.

Economic profit is calculated as total revenue minus total cost. Total revenue (TR) is the total amount of money earned from selling a product, which is calculated by multiplying the quantity sold (Q) by the price per unit (P). Total cost (TC) is the total expense incurred in producing a product.

In this case, we have the following information:

Bobby sells 20 glasses of lemonade at $0.20 per cup, so his total revenue is:

TR = 20 cups * $0.20/cup = $4.00

Bobby's average total cost is $0.17 per cup. Since he sold 20 cups, his total cost is:

TC = 20 cups * $0.17/cup = $3.40

Now, we can calculate Bobby's economic profit:

Economic Profit (π) = Total Revenue (TR) - Total Cost (TC)

= $4.00 - $3.40

= $0.60

So, Bobby's economic profit for the day is $0.60.

The correct option is:

a. $0.60

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Choose one of the theorems about chords of a circle and state it using your own words and create a problem about chords that uses the theorem that you explained.

Answers

Answer:

Se below.

Step-by-step explanation:

The Chord Intersection Theorem:

If 2 chords of a circle are AB and CD and they intersect at E, then

AE * EB = CE * ED.

Problem.

Two Chords AB and CD intersect  at E.  If AE =  2cm , EB = 4 and CE = 2.5 cm, find the length of ED.

By the above theorem : 2 * 4 = 2.5 * ED

ED = (2 * 4) / 2.5

The measure of ∠XYZ is 35°.

What is the secants theorem?

Secants theorem states that the angle formed by the two secants which intersect inside the circle is half the sum of the intercepted arcs.

Here is the problem of chords that we would use the secants theorem

Circle A is shown. Secant W Y intersects tangent Z Y at point Y outside of the circle. Secant W Y intersects circle A at point X. Arc X Z is 110° degrees and arc W Z is 180° degrees. In the diagram of circle A, what is the measure of ∠XYZ?

We want to determine the angle ∠XYZ in the image attached.

To solve that, we will use the formula in the theorem for angles formed by secants or tangents. Thus;

According to Secants theorem,

∠XYZ = ½(arc WZ - arc XZ)

Given, arc WZ = 180° and arc XZ = 110°

Thus;

∠XYZ = ½(180 - 110)

∠XYZ = ½(70)

∠XYZ = 35°

Hence, the measure of ∠XYZ is 35°.

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True or False: As long as the information reported follows the generally accepted accounting principles (GAAP) guidelines, accountants in a firm have the liberty to use personal judgment to report transactions in the firm’s financial statements.

Answers

Answer:

The given statement is true.

Step-by-step explanation:

Yes this is true.

GAAP is a collection of certain standard accounting rules for financial reporting.

Few general principles of GAAP guidelines are :

1. Principle of Regularity.

2.  Principle of Sincerity.

3. Principle of Consistency.

4. Principle of Non-Compensation.

5. Principle of Continuity.

If grapes are 92% water and raisins are 20% water, then how much did a quantity of raisins, which currently weighs 10 pounds, weigh when all the raisins were grapes? (Assume that the only difference between their raisin-weight and their grape-weight is water that evaporated during their transformation.)

A. 25 pounds
B. 46 pounds
C. 92 pounds
D. 100 pounds
E. 146 pounds

Answers

The answer is D
0.08x = 0.8* 10 —-> x= 100

Christina is tying tow pieces of string together to make a single piece. Her knot will reduce the lenght of each piece by 1/4 inch. If one piece is 3 1/4 inches long and the other is 5 1/2 inches long, what will be the length of the single piece of string?

Answers

Answer:

  8 1/4 inches

Step-by-step explanation:

  (3 1/4 - 1/4) + (5 1/2 - 1/4) = 3 + 5 1/4 = 8 1/4 . . . inches

A line segment is divided in two​ segments, such that the ratio of the long segment to the short segment is equivalent to the golden ratio. If the length of the entire line segment is 15 inches​ long, what is the length of the longer piece of the divided​ segment? Use variant phialmost equals1.618.

Answers

Answer:

9.271 inches.

Step-by-step explanation:

Let AC be the length of original line segment and point B divides it into two segments such that AB is longer and BC is smaller segment.

[tex]AB+BC=AC=15[/tex]

We can describe the golden ratio as:  

[tex]\frac{AB}{BC}=\frac{AC}{AB}=1.618[/tex]

[tex]\frac{AC}{AB}=1.618[/tex]

[tex]\frac{15}{AB}=1.618[/tex]

[tex]\frac{15}{1.618}=AB[/tex]

[tex]9.270704=AB[/tex]

[tex]AB=9.271[/tex]

We can verify our answer as:

[tex]AB+BC=15[/tex]

[tex]9.271+BC=15[/tex]

[tex]9.271-9.271+BC=15-9.271[/tex]

[tex]BC=5.729[/tex]

[tex]\frac{AB}{BC}=1.618[/tex]

[tex]\frac{9.271}{5.729}=1.618[/tex]

[tex]1.618=1.618[/tex]

Hence proved.

Therefore, the length of the longer side would be 9.271 inches.

answer
to justify
22. Insert grouping symbols to make the answer
correct. Then evaluate the expression to justify
your work. (Hint: Use absolute value bars.)
4-9+3^2-8=6
17+ 11 - 13^2=11

Answers

Answer: Just add then you have to multiply the main number i cant give you the anwser but i can help you∈∈∈

Step-by-step explanation:

Identify which type of sampling is​ used: random,​ systematic, convenience,​ stratified, or cluster. To determine customer opinion of their check dash in service​, American Airlines randomly selects 70 flights during a certain week and surveys all passengers on the flights. Which type of sampling is​ used?

Answers

American Airlines used cluster sampling by selecting entire flights (clusters) and surveying every passenger on those flights.

To determine customer opinion of their check-in service, American Airlines employs a specific type of sampling method by randomly selecting 70 flights during a certain week and surveying all passengers on those flights. This is an example of cluster sampling, which is one of the probability sampling techniques.

In cluster sampling, the population is divided into clusters (e.g., flights in this case) and then entire clusters are randomly selected. All individuals within the chosen clusters are included in the sample. The key element here is that entire clusters are selected, and every member of those clusters is surveyed.

Find distance. round to the nearest tenth of necessary. A (0,3) and B (0, 12)

Answers

Answer:

Step-by-step explanation:

The distance formula is d=[tex]\sqrt{(x2-x1)^{2} +[tex]\sqrt{(0-0)^{2} + (12-3)^{2}}[/tex][tex]\sqrt{0 + (9)^{2}}[/tex]

[tex]\sqrt{(9)^{2}}[/tex]

[tex]\sqrt{(y2-y1)^{2} }[/tex]

[tex]\sqrt{81}[/tex] = 9

4. Find x if PQ = RS,
PQ = 9x - 7, and RS = 29.

Answers

Answer:

x=4

Step-by-step explanation:

Because we know that PQ = RS, we can use the transitive property to replace PQ in the first equation with 29:

9x-7=29

1) Add 7 to both sides:

9x=36

2) divide by 9 on both sides:

x=4

Final answer:

To find x, set the given equations equal to each other. Simplify the equation and solve for x. The solution is x = 4.

Explanation:

To find x, we can set the given equations equal to each other:

9x - 7 = 29

Adding 7 to both sides, we get:

9x = 36

Dividing both sides by 9, we find:

x = 4

So, x is equal to 4.

A person stands 10 meters from a lamppost at night. If the person is 2 meters tall and the lamppost is 6 meters tall, how long is their shadow cast by the lamp?

Answers

Answer:

  5 meters

Step-by-step explanation:

The height of the lamppost above the person is twice the height of the person, so the distance between the lamppost and person is twice the length of the person's shadow. (A diagram can help you see this.)

The person's shadow is (10 m)/2 = 5 m long.

___

Check

The tip of the shadow is 15 m from the lamppost, 2.5 times the height of the lamp. The tip of the shadow is also 5 m from the person, 2.5 times the height of the person. The triangles involved are similar.

Final answer:

To find the length of the person's shadow, we use the properties of similar triangles defined by the person and the lamppost. By setting up a proportion between the person's and the lamppost's height to their respective shadow lengths and solving, we find the person's shadow is 5 meters long.

Explanation:

To solve the problem of determining the length of the shadow cast by the person standing 10 meters from the lamppost at night, we can use the concept of similar triangles.

Since the light source (lamppost) is above ground level, the triangle formed by the lamppost, the end of the shadow, and the top of the person's head is similar to the triangle formed by the person, their shadow, and the ground. Using the properties of similar triangles, the ratios of corresponding sides are equal.

Let's denote the length of the person's shadow as s. The triangles' corresponding sides' ratios would be:

The person's height (2 meters) to the length of their shadow (s meters)The lamppost's height (6 meters) to the distance from the lamppost to the end of the shadow (10 + s meters)

Setting up the proportion, we have:

2 / s = 6 / (10 + s)

By cross-multiplying and solving for s, we get:

2(10 + s) = 6s

20 + 2s = 6s

4s = 20

s = 5

Hence, the length of the person's shadow is 5 meters.

elley is mixing blue and yellow food coloring to make green food coloring for her bakery. The relationship between the amounts of food coloring she mixes can be modeled by the equation b=2/3y, where b represents the amount of blue food coloring and y represents the amount of yellow food coloring. Which of the following statements is true?

A.
Kelley uses 2 parts blue for every 3 parts yellow.

B.
Kelley uses 3 parts blue for every 2 parts yellow.

C.
Kelley uses 2 parts blue for every 5 parts yellow.

D.
Kelley uses 5 parts blue for every 2 parts yellow.

Answers

A. Kelley uses 2 parts blue for every 3 parts yellow

Answer:

A. Kelley uses 2 parts blue for every 3 parts yellow.

Step-by-step explanation:

Given equation that shows the amount of blue food coloring,

[tex]b=\frac{2}{3}y[/tex]

Where,

y = amount of yellow food coloring,

If y = 2,

[tex]b=\frac{2}{3}\times 2=\frac{4}{3}[/tex]

i.e. [tex]\frac{4}{3}[/tex] parts of blue for every 2 parts yellow.

If y = 3,

[tex]b=\frac{2}{3}\times 3=2[/tex]

i.e. 2 parts of blue for every 3 parts yellow.

If y = 5,

[tex]b=\frac{2}{3}\times 5=\frac{10}{3}[/tex]

i.e. [tex]\frac{10}{3}[/tex] parts of blue for every 5 parts yellow.

Hence, OPTION A is correct.

Anthony leaves Kingstown and drives 160 miles to Albany. He leaves at 2:00 p.m. At 2:15p.m., Emily leaves Albany and drives to Kingstown at 40 m.p.h. If Anthony is driving 45 m.p.h., at what time do they pass each other on the road?

Answers

Answer:

The time at which the pass each other on the road is 4:00 pm

Step-by-step explanation:

The first step is to write the equations that give us the position of Emily and Anthony, these are give by:

[tex]x_A = x_{A0}+v_At[/tex]  for Anthony

[tex]x_E=x_{E0}+v_Et[/tex]     for Emily

Since Antony drives 160 miles to Albany, we can claim that the distance from Kingstown to Albany is 160 miles.

Let us set the initial position of Antony in Kingstown and consider it as the origin of our coordinate system. In this way, [tex]x_{A0}=0[/tex].

This automatically tells us that Emily initial position, in Albany, is 160 miles from our origin, hence [tex]x_{E0} = 160 miles[/tex].

Now, we need to define where to start counting the time. In this problem, it is easier to set time zero when Emily leaves. The reason for this is that now, we can say that when Emily left, Anthony was already traveling during 15 mins (remember Emily departing time was 2:15 pm and Anthony's time was 2:00 pm) and Anthony's initial position was from Emily's point of view was different from zero. We can calculate this distance as the multiplication of the time Anthony was traveling times the speed at which he was driving. This is:

[tex]x_{A0}=v_At[/tex]

being [tex]t[/tex] the 15 mins he traveled before Emily started and [tex]v[/tex] the 45 m.p.h given by the problem. We also need to convert 15 mins to hours, which gives 0.25 hours. Thus:

[tex]x_{A0}=45*0.25\\x_{A0}=11.25[/tex] miles

and the position equations are now:

[tex]x_A= 11.25 + v_At[/tex] for Anthony

[tex]x_E=160 + v_Et[/tex]

Since we are asked the time at which the pass each other on the road we need to equals their positions, [tex]x_A=x_E[/tex]:

[tex]11.25+v_At=160-v_Et[/tex]

Notice here that Emily's position is negative since she is moving towards the origin of our system, meaning in the negative direction. Solving for [tex]t[/tex]:

[tex]11.25+v_At=160-v_Et\\v_At+v_Et=160-11.25\\t(v_A+v_E)=148.75\\t = \frac{148.75}{v_A+v_E}[/tex]

Substituting the values of [tex]v_A=45[/tex] and [tex]v_E=40[/tex]:

[tex]t = \frac{148.75}{45+40}=\frac{148.75}{85}\\t=1.75 h[/tex]

What we have calculated is the time interval from where we start counting the time and remember this was set at 2:15 pm when Emily left. Since the exercise asks for the hours of the day we need to add the time interval to 2:15 pm and:

[tex]1.75 h = 1 h+45 min[/tex]

And 2:15 pm + 1 h is 3:15 pm + 45 mins is 4:00 pm which is the time at which the pass each other on the road.

Final answer:

Anthony and Emily will cross paths at 4:00 p.m. after calculating the distance covered by Anthony and the remaining distance between them when Emily starts driving, with their combined speed taken into consideration.

Explanation:

To solve this question, we need to calculate the time when Anthony and Emily will cross paths on the road, given that they are traveling towards each other from Kingstown to Albany and vice-versa. Anthony drives at 45 mph whereas Emily drives at 40 mph

Let's first find out how far apart they are when Emily starts her journey at 2:15 p.m. Since Anthony left at 2:00 p.m. and drives for 15 minutes until Emily starts her journey, we calculate the distance he has covered as:

Distance = Speed × Time = 45 mph × 0.25 hours (since 15 minutes is 0.25 of an hour) = 11.25 miles

Now, the remaining distance between them is:

160 miles - 11.25 miles = 148.75 miles

The combined speed at which they're closing the distance is:

45 mph + 40 mph = 85 mph

To find the time it takes for them to meet, we use the formula:

Time = Distance / Speed = 148.75 miles / 85 mph ≈ 1.75 hours

Since 1.75 hours is 1 hour and 45 minutes, they will meet at:

2:15 p.m. + 1 hour and 45 minutes = 4:00 p.m.

Therefore, Anthony and Emily will cross paths at 4:00 p.m.

Jose is applying to college. He receives information on 7 different colleges. He will apply to all of those he likes. He may like none of them, all of them, or any combination of them. How many possibilities are there for the set of colleges that he applies to?

Answers

Answer:

128 posibilities

Step-by-step explanation:

We have 7 colleges (A,B,C,...,H) which form a set with seven elements.

What you are asking is the number of elements (or cardinality) of the set that contains all possible sets formed by those 7 elements (or the "power set").

It is known that if n is the number of elements of a given set X, then the cardinality of the power set is [tex]2^n[/tex].

Therefore, there are [tex]2^7[/tex] or 128 possibilities (or elements) for the set of colleges that he applies to.

Final answer:

The number of possible combinations of colleges that Jose can apply to from 7 options is 128. This includes the possibility of not applying to any college as well.

Explanation:

The question asks how many different combinations of colleges Jose may apply to given 7 different options.

This is a problem related to the field of combinatorics in mathematics, specifically the concept of the power set, where each college can either be chosen or not, resulting in 2⁷ possible combinations.

Since he can like none, some, or all colleges, we include the possibility of an empty set, leading to a total of 2⁷ = 128 possibilities.

In each case, Jose has two options for every college - to apply (like) or not to apply (dislike).

Therefore, the number of combinations is calculated by raising 2 (the number of options for each item) to the power of 7 (the number of items).

Kevin is designing a logo in the shape of a trapezoid for his company. The longer of the two parallel sides is twice as long as each of the other three sides of the trapezoid. If the perimeter of the logo is 15 inches (15in.), what is the length of one of the shorter sides, in inches?

Answers

P = distance all around

P = 2x + 3(x)

15 = 2x + 3x

15 = 5x

15/5 = x

3 = x

The distance of one of the shorter sides is 3 inches.

The length of one of the shorter sides is 3 inches.

What is trapezium?

A trapezium is a quadrilateral with four sides where two sides are parallel to each other.

We have,

Trapezium has four sides and two parallel sides.

Now,

Let three sides be equal.

i.e x

The longer sides of the parallel sides.

= 2x

The shorter sides of the parallel sides.

= x

Now,

Perimeter of the trapezium = 15 inches

2x + x + x + x = 15

2x + 3x = 5x

5x = 15

x =3

Thus,

The length of the shorter side is 3 inches.

Learn more about trapezium here:

https://brainly.com/question/22607187

#SPJ2

At the beginning of this month, Diego had $272.79 in digital money. So far
this month he has made deposits of $26.32, $91.03, and $17.64 into his
account, while he has made withdrawals of $31.08, $29.66, and $62.19. How
much digital money does Diego have now?
O
A. $530.71
B. $14.87
O
c. $284.85
O
D. $260.73
SUSMIT

Answers

Answer:

Option c. $284.85

Step-by-step explanation:

we know that

The amount of money Diego now has is equal to the amount of money he originally had plus deposits minus withdrawals.

so

[tex]272.79+(26.32+91.03+17.64)-(31.08+29.66+62.19)\\272.79+134.99-122.93\\\$284.85[/tex]

Two angles are supplementary. the measure of one angle is 4 more than 2 times the measure of teh other andgle. Write an equation that can be used to find the measures?

Answers

Answer:

[tex]y=58.67^{\circ}[/tex]

[tex]x=121.33^{\circ}[/tex]

Step-by-step explanation:

We are given that two angles are supplementary .

We have to write an equation that can be used to find the measures.

Let x and y are supplementary

According to question

[tex]x+y=180^{\circ}[/tex]( by definition of supplementary angles)

[tex]x=2y+4[/tex]

Substitute the value then we get

[tex]2y+4+y=180[/tex]

[tex]3y=180-4[/tex]

[tex]3y=176[/tex]

[tex]y=\frac{176}{3}[/tex]

[tex]y=58.67^{\circ}[/tex]

Substitute the value then, we get

[tex]x+58.67=180[/tex]

[tex]x=180-58.67[/tex]

[tex]x=121.33^{\circ}[/tex]

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