Mathematics College

Can someone please answer all these please?

a) When Lucia buys olives at the deli, the scale shows 0.325 kg at $18.88 per kg. How much should she pay?

b) John’s weekly wage is $1510.99 and he pays 2/3 of his weekly income in rent. How much rent does he pay each week?

c) A farmer owns 780 hectares of land. During a bushfire, 195 hectares are burnt. What percentage of his land was burnt?

d) Candles are $14.95 each. Estimate how much I need if I want to buy 17 of them.
Show your working.

e) Decrease 5000 by 13 %.

f) Ray bought a computer for $1600 and then a year later sold it for $1200.
Calculate his loss =
Calculate his loss as a percentage of the original price of the computer =

g) John spent $80 on dinner last Friday night. If this $80 is equal to 40% of his weekly income, calculate his weekly income.

h) Mr Jenkins invested $7500 at his local bank at 6.5% Simple Interest per annum.
What was his investment worth at the end of the first year?

Question 5

a) Express this ratio in lowest terms: 50 minutes : 2 ½ hours

b) Divide $120 in the ratio 5:7

c) Jane and Ben share in their lottery win in the ratio of 7: 3.
If Jane’s share of the money is $5600, how much does Ben receive?




Answers

Answer 1
a) $6.136
b) $997.25
c) 25%
d) $254.15
e) 4350
f) $400, 25% loss
g) $200
h) $7,987,50
5
a) 1min: 3min
b) $50:$70
c) $2400

Related Questions

Find the area in the first quadrant under the curve y = 1 / (x^2+6x+10)

Answers

The area is given by

[tex]\displaystyle\int_0^\infty\frac{\mathrm dx}{x^2+6x+10}[/tex]

Complete the square in the denominator:

[tex]x^2+6x+10=x^2+6x+9+1=(x+3)^2+1[/tex]

then substitute [tex]x+3=\tan y[/tex], so that [tex]\mathrm dx=\sec^2y\,\mathrm dy[/tex]. Then as [tex]x\to0^+[/tex], we have [tex]y\to\arctan3[/tex]; as [tex]x\to\infty[/tex], we have [tex]y\to\dfrac\pi2[/tex]. So the integral becomes

[tex]\displaystyle\int_{\arctan3}^{\pi/2}\frac{\sec^2y}{\tan^2y+1}\,\mathrm dy=\int_{\arctan3}^{\pi/2}\mathrm dy=\dfrac\pi2-\arctan3[/tex]

Mary used a thermometer to measure the temperature of water at different states. What would the Celsius thermometer read when water froze and became a solid ?
A) -32 o
B) 0 o
C) 25 o
D) 32 o

Answers

it would be answer choice B) 0^o (0 degrees)
It would be B in Celsius

at elm elementary school for every 5 students who walk to school there are 7 students who take the bus.if 420 students attend elm elementary school how many of them walk to school? tell me how you got the answer and will mark brainliest

Answers

175 students walk to school. 7+5=12 and 420 divided by 12 is 35. I checked how I did it was correct because of 5*35+7*35=420. Then I found the product of 5*35 which is 175.

The students walk to school is 175.

What is Ratio?

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

let the ratio of students who walk to students who take bus = 5: 7

let the common ratio be x.

So, Number of students who walk = 5x

and, Number of students who Bus= 7x

Total students= 420

So, 5x+ 7x = 420

12x= 420

x= 35

Hence, students walk to school =5  x 35 = 175.

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Hey can you please help me posted picture of question

Answers

Sample Space is the set of all possible outcomes that could occur for an event.

For example, sample space for tossing a coin will be {H, T} ,where H stands for Head and T stands for Tail

Likewise sample space for throwing a dice will be: {1, 2, 3 ,4, 5 ,6}

Thus, the answer to this question is option A

The appropriate definition is ...
  A. The set of all possible outcomes.

Please help! What is the simplest form of expression

Answers

It should be A

First you should reduce the fraction

Subtract the exponent by its common variables;
x^8 - x^2 = x^6
y^9 - y^4 = y^5

Now your equation should be \frac{ \sqrt{6x^{6}y^{5} } }{ \sqrt{5} } 

Then you should simplify your radical,
there are 3 groups of 2 in the x variables and 2 groups of 2 in the y variables, as a result, the x and y go outside the square root, and one y variable remains in the root (as there wasn't enough y's to make another group of 2) this should be over 5

Hey can you please help me posted picture of question

Answers

The statement above is TRUE.
When two probabilities are multiplied together, then the probability represents a compound event. In probability, a compound event refers to two or more events that are happening simultaneously. The calculation goal is usually to find the probability of all those events actually occurring.

Find a negative real number such that the square of the sum of the number and
25 is equal to 36

Answers

"The square of the sum of the number and 25 is equal to 36" translates to 
[tex](n+25)^2=36[/tex]

Take square root of both sides:

[tex]|n+25|=6\quad\Longrightarrow\quad n+25 = 6\ \text{ or }\ n+25=-6[/tex]

Then subtract both sides by 25:

[tex]n = 6-25\ \text{ or }\ n=-6-25\\\ \\\boxed{n=-19\ \text{or}\ n=-31}[/tex]

Hope this helps.

The ratio of the number of peas Julia had to the number of peas Vlada had was 3:2. After Julia gave Vlada 15 peas, she still had 10 more peas than Vlada. How many peas did Julia have at first?

Answers

J:V = 3:2

3:2 x 40 = 120:80

J: 120-15 = 105
V:  80+15 = 95

J:V is now 105:95

The original amount of peas that Julia had at first was 120.

Find the dimensions of a rectangle with an area of 100 square feet that has the minimum perimeter.

Answers

The polygon with the shortest perimeter for a given area is a regular polygon. The regular 4-sided polygon is the square.

The side length of the square with an area of 100 ft² is √(100 ft²) = 10 ft.

The rectangle with the minimum perimeter for an area of 100 ft² is 10 ft by 10 ft.
Final answer:

The rectangle with an area of 100 square feet that has the minimum perimeter is a square with sides of 10 feet each.

Explanation:

To find the dimensions of a rectangle with a particular area that has the minimum perimeter, the rectangle should be a square. This is because squares minimize perimeter for a fixed area.

Given the area of the rectangle (square in this case), which is 100 square feet, the sides would be the square root of the area. Therefore, in this case, the length and the width of the rectangle (also known as the dimensions) are both √100 = 10 feet.

Hence, the rectangle with an area of 100 square feet and minimum perimeter is a square with side lengths of 10 feet.

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NEED HELP ASAP PLEASE

Answers

Divide any term by the previous term.

For example,

(3/28) / (-1/4) = 3/28 * (-4/1) = -12/28 = -3/7

Answer: -3/7

Yasmin purchased 6 heads of cabbage that each weighed  pounds. How much did the cabbage weigh all together?

Answers

The weight of each cabbage is not given.
I'll assume that each cabbage weighs p pounds.

Now, we know that Yasmin bought 6 cabbage each weighing p pounds. To know the total weight, we will simply multiply the number of cabbages by the weight of each as follows:
Total weight = 6 * p = 6p pounds

Hope this helps :)

Answer:

its B i think

Step-by-step explanation:

yall needa just say the answer not explain like.smh

A transformation of a figure that flips a figure across a line

Answers

Reflection probably

Calculate the average rate of change of f(x) over the interval [-4, -1] using the formula [ BLANK ] The value of f(-1) is [BLANK] The value of f(-4) is .[BLANK] The average rate of change of f(x) over the interval [-4, -1] is .[BLANK]

First set of answers: A. [f(-4)-f(-1)]/[-5]
B.[f(-1)-f(-4)]/[-5]
C.[f(-1)-f(-4)]/[3]
D.[f(-4)-f(-1)]/[3]


Second set of answers: A.3 Third set: A.-4 Final set A.-2
B.2 B.-3 B.-1.5
C.-1 C.4 C.2
D.4

Answers

Answers:
The formula is [f(-1)-f(-4)]/[3]
The value of f(-1) is 3
The value of f(-4) is -3
The average rate of change is 2

==============================================

Explanation:

For the first blank, we use the formula
[ f(b) - f(a) ]/[ b - a ]
where 'a' and 'b' are the endpoints for the x interval

In this case, a = -4 and b = -1. When you plug those values into the formula above, you get...
[ f(b) - f(a) ]/[ b - a]
[ f(-1) - f(-4)]/[ -1 - (-4) ] 
[ f(-1) - f(-4)]/[ -1+4 ]
[ f(-1) - f(-4)]/[ 3 ]
which is why the answer is choice C for the first blank

-------------------------------------------

To compute the value of f(-1), we draw a vertical line through -1 on the x axis. This vertical line crosses the diagonal function graph at the point (-1,3). The y value of this point is what we want. Plugging in x = -1 leads to y = 3. This is why f(-1) = 3
If you want, you can draw a horizontal line through (-1,3) and you'll see it touching 3 on the y axis.

-------------------------------------------

Follow similar steps as above to compute f(-4). Draw a vertical line through x = -4 on the x axis. Mark the point where the vertical line crosses the diagonal line. This point is (-4,-3). Optionally draw a horizontal line over til you hit the y axis and you'll find that y = -3 corresponds to x = -4

This is why f(-4) = -3

-------------------------------------------

We'll use the last three sections to compute the average rate of change. Everything combines together building up to this moment.

From the first part, we had the formula
[ f(b) - f(a) ]/[ b - a ]
[ f(-1) - f(-4)]/[ 3 ]

We can replace the "f(-1)" with 3 since we found that f(-1) = 3
Similarly, f(-4) = -3 so we can replace the "f(-4)" with -3

Doing those replacements and simplifying leads to...

[ f(-1) - f(-4)]/[ 3 ]
[ 3 - (-3)]/[ 3 ]
[ 3 + 3]/[ 3 ]
6/3
2

So the average rate of change is 2

Note: because the entire graph is a straight line, the average rate of change for any interval a < x < b is going to be equal to the slope m. In this case, the slope of the line is m = 2/1 = 2. We move up 2 units each time we move to the right 1 unit along the diagonal line.

Find the value of x. If necessary, round your answer to the nearest tenth. The figure is not drawn to scale.

Answers

the drawing will explain all that you need yo answer this question. Note, you do have to use Pythagorean theorem. You can do what I drew because of a theorem that states if a segment is perpendicular to a chord then that segment bisects the chord.

Item 14 You develop an app to help students complete their homework. To earn money, you sell advertising space on the app’s main screen. An advertiser pays you $20 per month and an additional $0.005 each time the app is opened. Graph the linear equation that represents your monthly income y (in dollars) when the app is opened x times.

Answers

y ⇒⇒⇒ monthly income
x ⇒⇒⇒ number of times app is opened

$20 per month and an additional $0.005 each time the app is opened

∴ y = 0.005 x + 20

The attached figure represents the graph of y

Answer:

See attached diagram

Step-by-step explanation:

Let x be the number of times the app is opened and y be your monthly income (in dollars).

If an advertiser pays you  $0.005 each time the app is opened, then he pays you $0.005x for all times the app is opened. Since an advertiser pays you $20 per month, then the total income is

y=20+0.005x.

Plot this line on the coordinate plane (see attached diagram).

# 14. Q. find the area of rectangle

Answers

The answer is 112 ft^2

You must multiply the height and the width.

8 x 14 = 112
Area of a rectangle is the product of its Length and Width.

Area = Length x Width

From figure we can see,

Length = 14 ft
Width = 8 ft

So, Area = 14 x 8 = 112 ft²

Thus, the option third gives the correct measure of Area for given rectangle 

Equation of the Graph in Function Notation 

Answers

The function looks like it goes through the points (0, 0), (1, 1), (4, 2), so may be a square root function. It seems to have undefined slope at x=0, as a square root function does.

[tex]f(x)=\sqrt{x}[/tex]

You backpacked for a distance of 15.75 miles today. If you backpacked at an average speed of 1.26 miles per hour, how many hours did you spend backpacking today?

Answers

1 hour = 1.26 miles.

Total hour = 15.75 ÷ 1.26 = 12.5 hours

Answer: 12.5 hours

Sam entered three functions into a graphing calculator, y1 = x + 2, y2 = x2 + 2, and y3 = 2x. A portion of the table created by those functions is shown below.

Answers

We have the following functions:
 y1 = x + 2
 y2 = x ^ 2 + 2
 y3 = 2 ^ x

 For x = 0:
 y1 = 0 + 2 = 2
 y2 = 0 ^ 2 + 2 = 0 + 2 = 2
 y1 = y2

 For x = 5
 y2 = 5 ^ 2 + 2 = 25 + 2 = 27
 y3 = 2 ^ 5 = 32
 y3> y2

 For x = -1:
 y1 = -1 + 2 = 1
 y2 = (-1) ^ 2 + 2 = 1 + 2 = 3
 y3 = 2 ^ (- 1) = 1/2 = 0.5
 y3 <y1 <y2

 Answer:
 y1 = y2
 y3> y2
 y3 <y1 <y2

Carlos read 4 books. How many children read fewer books. Than carlos?

Answers

Where the above pictogram is given, note that the number of children who read fewer books than Carlos are two in number. Namely:

Gwen - Two booksHenry - Four books.

To derive the number of children who read fewer books than Carlos, we only need to count the number of people whose books are less than four.

Using the picture graph key, we know that:

Ryan read 4 books

Gwen = 2

Anna = 6

Henry = 3

Since 2 and 3 are less than 4 which was read by Carlos, then the number of children who read fewer books than Carlos are two in number.

Full Question:

Although part of your question is missing, you might be referring to this full question:

Read Picture Graphs

Use the picture graph above. Write or draw to explain.

4. Carlos read 4 books. How many children read fewer books than Carlos?

_  children ?

15 + (-18) =
Please help quick

Answers

-3



hope this help........................

"A magician performing a magic act has asked for 2 volunteers from the audience to help with his routine. If there are 250 people in the audience, which of the following expressions represents the number of possible pairs of volunteers?"

Answers

The answer should be 250 objects taken 2 at a time

Number of people in the audience = 250

     Number of volunteers required to perform the magic act from the audience =2

As 2 people can be selected from 250 people by using the properties of combination as order of choosing people is not important.

Possible number of ways = [tex]_{2}^{250}\textrm{C}[/tex]

                      = [tex]\frac{250!}{2!\times 248!}=249 \times 125=[/tex]

                      = 31125 ways




During a basketball game a player makes 12 of 18 free throws attempted write the ratio as fraction reduced to the lowest term

Answers

To make this a fraction, let's put [tex] \frac{12}{18} [/tex] . We can divide both top and bottom by 6, leaving us with [tex] \frac{2}{3} [/tex] . This is as far as we can reduce it, making it your answer. I hope this helps!

Final answer:

The ratio of free throws made to free throws attempted by the player is 12/18, which can be reduced to its lowest terms by dividing both numbers by their greatest common divisor, 6, resulting in the reduced fraction 2/3.

Explanation:

To find the ratio of free throws made to free throws attempted, we start by looking at the numbers given: 12 made out of 18 attempted. We express this ratio as a fraction 12/18.

To reduce this fraction to its lowest terms, we need to find the greatest common divisor (GCD) that divides both numerator and denominator evenly.

In this case, the number 6 is the GCD of 12 and 18. Dividing both the numerator and the denominator by 6, we get 2/3.

Hence, the ratio of free throws made to free throws attempted, reduced to the lowest term, is 2/3.

Find the work done by the force field f in moving an object from a to
b. f(x, y) = 2y3/2 i + 3x y j a(1, 1), b(3, 9)

Answers

Final answer:

Work done by a force field in moving an object from a to b is calculated using the line integral of the vector field. For the force field F(x, y) = 2y3/2i + 3xyj and the points a(1, 1) and b(3, 9), we consider a path from a to b, compute the line integral separately for each segment, and sum the results.

Explanation:

In physics and vector calculus, the work done by a force field (like the one in your question) in moving an object from a to b is calculated using the line integral of the vector field along the path taken. For your specific question where the force field is given by F(x, y) = 2y3/2i + 3xyj with the object moving from a(1, 1) to b(3, 9), the work done is computed as follows:

Select a path from point a to b. This can be a straight path, but any path from a to b will do. Let's take a simple path, where we move along the x-axis from (1,1) to (3,1), then parallel to the y-axis to (3,9).Calculate the line integral separately for each segment of the path. Since we are dealing with a vector field in two dimensions and two straightforward paths, this is done by integrating the force fields for x and y along each segment.Sum the results to get the total work done by the force field in moving the object from point a to point b.

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Maggie has 7 tiles with pictures of plants and 2 tiles with pictures of animals. Maggie keeps all the tiles on a mat with the pictures hidden and mixes them up. She then turns one tile face up and finds the picture of a plant on it. She removes this tile from the mat and turns over another tile without looking. What is the probability that the second tile that Maggie turns over has a plant on it? 22.2% 28.6% 65.0% 75.0%

@musiclover10045

Answers

I believe the answer to this one would be 75.0%

A cake has circumference of 25 1/7inches. What is the area of the cake? Use 22/7 to approximate π. Round to the nearest hundredth. Enter your answer in the box.

Answers

we know that
area of the circle=pi*r²

circumference==2*pi*r----------> r=circumference/(2*pi)
circumference=25 1/7 in----> (25*7+1)/7----> 176/7 in
r=(176/7)/(2*22/7)----> r=176/44----> r=4 in

area of the circle is equal to the area of the cake
area=pi*r²---> (22/7)*4²-----> area=50.29 in²

the answer is
50.29 in²

Final answer:

To find the area of a cake given its circumference, calculate the radius and plug it into the area formula A = πr². Finally, round to the nearest hundredth to get the area value.

Explanation:

To find the area of a circle, you use the formula A = πr², where r is the radius of the circle. Given the circumference of the cake is 25 1/7 inches, we can calculate the radius as r = Circumference / (2π) = 25 1/7 / (2 x 22/7) = 25 1/7 / (44/7) = 25 1/7 / 6.2857 ≈ 3.99 inches.

Now, substitute the radius into the area formula: A = 3.14 x (3.99)² ≈ 50.03 square inches. Therefore, the area of the cake is approximately 50.03 square inches.

Find the area for the given shape below

Answers

To find the area of a triangle given its base and its height, use the formula A = bh/2.

The base of the triangle is 14m.
The height of the triangle is 10m.

Plug these values into the formula and solve.

A = bh/2
A = 14(10)/2
A = 140/2
A = 70

Answer:
The area of the triangle is 70 m².

A solid oblique pyramid has a square base with edges measuring x cm. The height of the pyramid is (x + 2) cm. Which expression represents the volume of the pyramid? cm3 cm3 cm3 cm3

Answers

The answer is option A, V=(x^3+2x^2)/3.

we know that

the volume of a solid oblique pyramid is equal to

[tex]V=\frac{1}{3}*B*h[/tex]

where

B is the area of the base

h is the height of the pyramid

in this problem we have that

B is a square

[tex]B=b^{2}[/tex]

where

[tex]b=x\ cm[/tex]

so

[tex]B=x^{2}\ cm^{2}[/tex]

[tex]h=(x+2)\ cm[/tex]

substitute in the formula of volume

[tex]V=\frac{1}{3}*x^{2}*(x+2)\\ \\V=\frac{1}{3}*[x^{3} +2x^{2}]\ cm^{3}[/tex]

therefore

the answer is

[tex]V=\frac{1}{3}*[x^{3} +2x^{2}]\ cm^{3}[/tex]

Solve the problem by applying the fundamental counting principle. an apartment complex offers apartments with four different​ options, designated by a through
d. aequalsnumber of bedrooms​ (one through​ four) bequalsnumber of bathrooms​ (one through​ three) cequalsfloor ​(first through​ fifth) dequalsoutdoor additions​ (balcony or no​ balcony) how many apartment options are​ available?

Answers

That would be 4 * 3 * 5 * 2  = 120 Answer

We have been given that an apartment complex offers apartments with four different​ options, designated by a through  d.

From the given directions we have

4 choices are for a3 choices are for b5 choices are for c2 choices are for d

Therefore, from the fundamental theorem of counting principle number of available apartments are

[tex]4\times 3\times 5\times 2 =120[/tex]

Hence, 120 apartments options are available.

show me step by step how to convert a repeating decimal 3.152 into a improper fraction or mixed number

Answers

Step 1. Count the number of repeating digits.
Step 2. Multiply the number by 10 to that power.
Step 3. From that product, subtract the original number.
Step 4. Divide the result by 1 less than the multiplier of Step 2.
Step 5, Reduce the fraction.

For your number [tex]3. \overline{152}[/tex]
Step 1. There are 3 repeating digits
Step 2. The multiplier is [tex]10^{3}=1000[/tex]. The multiplied number is
  [tex]1000 \cdot 3. \overline{152}=3152. \overline{152}[/tex]
Step 3. Subtract the original number
  [tex]3152. \overline{152}-3. \overline{152}=3149[/tex]
Step 4. Divide by 1000 - 1 = 999
  [tex]\dfrac{3149}{999}=3 \frac{152}{999}[/tex]
This fraction does not reduce, so you are done.
Other Questions
At a fair, each person can spin two wheels of chance. The fist wheel has numbers 1,2, and 3. The second wheel has the letters A and B. (A) list all the possible outcomes of the computed event. (B) if you spin both wheels, what is the probability that you get either a 1 or an A? Explain. is the following sentence grammatically correct or incorrect?los me das? The length of a rectangle is increase by 25%. to keep the area of the rectangle the same, by what percent must the width be decreased Read Scene 1 Act 1 of Midsummer Nights Dream Choose to translate this scene into modern lanuage as a series of tweets or a social media posting Suddenly, lavinia is unable to remember what she was doing. she screams that bugs are crawling all over the walls. she begins to wildly swing her arms around. she can't fall asleep at night, but finally falls asleep at daylight. lavinia most likely has ________. For the function y = -2x + 20, what is the output when the input is 50. How did the october revolution of 1917 transform the political structure of the russian empire after world war i? What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche? During an avalanche, the ___energy of the snow on the mountain is converted into ___ energy as the snow cascades down.Drop down one: Elastic Kinetic Potential RadiantDrop down two: Chemical Kinetic Nuclear Potential The facts upholding the belief that a crime has been committed constitute ___ President Johnson's Great SocietyA. abolished New Deal legislation and created new social programsB. expanded New Deal legislation and created new social programsC. abolished New Deal legislation and reduced the federal budgetD. expanded New Deal legislation and reduced the federal budget In Edgar Allan Poes The Cask of Amontillado, the literary device of foreshadowing is used to create mystery when Montressor tells Fortunato A. You are a man to be missed. B. A draught of this Medoc will defend us from the damps. C. You were not to be found, and I was fearful of losing a bargain. D. You are rich, respected, admired, beloved; you are happy as once I was. How is animal farm an allegory for the soviet revolution of the 20th century? In writing the term coherence refers to A. The use of evidence to back ones assertions B. The logical and smooth presentation of concepts C. The use of rhetorical devices to puntuate key points D. The employment of precise and carefully made word choices Which type of art or architecture from ancient Egypt has been adopted by the US government Find k if 64 k = 4 During an interrogation, an fbi agent tries to scare a suspect into making a confession by saying "you know, they have this new type of lie detector that can measure activity in different regions of the brain to determine whether a person is lying or telling the truth." what technology is the agent referring to? Benefits of a strong core include greater body control during movement more efficient exertion of power more effective metabolism and digestion greater flexibility of the lower body the hall family garden is 3/4 of an acre. if they divide their garden into 1/8 acre sections, how many sections will they have? The surface area of a sphere is 200.96 square centimeters. What is the approximate volume of the sphere? Factor completely a2 - 9a + 20