Use the conditional statement to answer the question.


If an angle is a right angle, then the angle measures 90°.


Are the statement and its contrapositive true?


A. Both the statement and its contrapositive are true.

B. Both the statement and its contrapositive are false.

C. The statement is true, but the contrapositive is false.

D. The statement is false, but the contrapositive is true

Answers

Answer 1
Answer: A. Both the statement and its contrapositive are true.

It is written by switching the hypothesis and conclusion of a conditional statement and nullifying both.
For example, the contrapositive of “If the sky is blue then it is day” is “ If it is day then the sky is blue.”
Answer 2

Answer:  The correct option is

(A) Both the statement and its contrapositive are true.

Step-by-step explanation:  We are given to check whether the following conditional statement and its contrapositive is true or false :

"If an angle is a right angle, then the angle measures 90°".

Let us consider that

p : an angle is a right angle

and

q : the angle measures 90°.

So, the conditional statement is p ⇒ q. This is true, because the measure of a right angle is 90°.

The contrapositive of "p ⇒ q" is "not q ⇒ not p".

That is, if the measure of an angle is not 90°, then the angle is not right angle.

This is also true, because only angles with measure 90° are right angles.

Thus, the given statement and its contrapositive are TRUE.

Option (A) is correct.


Related Questions

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]

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

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.

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.

The temple at the top of the pyramid is approximately 24 meters above ground, and there are 91 steps leading up to the temple. How high above the ground would you be if you were standing on the 50th step?

Answers

Answer:

13,18meters

Step-by-step explanation:

If the temple is in a height of 24 meters and to get there there are 91 steps, each step is 24 m / 91 = 26,37cm

The 50th step then is 26, 37cm. 50=13.18meters

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.

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.

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.

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]

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.

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DE=6x, EF=4x, DF=30 What is EF?

Answers

Answer:

The answer to your question is EF = 12

Step-by-step explanation:

Data

DE = 6x

EF = 4x

DF = 30

Process

                DE    +    EF      = DF

               6x     +    4x       = 30

                           10x = 30

                            x = 30 / 10

                            x = 3

             6(3)    + 4 (3)     = 30

             18   +     12      = 30

                         30 = 30

DE = 6(3) = 18

EF = 4(3)  = 12

Sydney and Tom each count the number of steps it takes for them to walk to school. They each count a 4 digit number of steps. Total number of steps is also 4 digit. What is the greatest possible digit in the thousands place for Sydney's or Tom's steps?

Answers

Answer:

8

Step-by-step explanation:

The amount of radioactive element remaining, r, in a 100mg sample after d days is represented using the equation r=100(1/2) d/5. What is the daily percent of decrease

Answers

Answer:

   12.94%

Step-by-step explanation:

r = 100(1/2)^(d/5) = 100((1/2)^(1/5))^d ≈ 100(.87055)^d

The daily decrease is 1 - 0.87055 = 0.12944 ≈ 12.94%

If a person's eye level is h meters above sea level and she can see d kilometers to the horizon, then =d3.6h . Suppose the person can see 20.7 kilometers to the horizon. What is the height of her eye level above sea level?

Answers

Answer:

.

Step-by-step explanation:

given an existing function: f(x)=0.5(x-2)2+3, what transformstiins would have to be made to result in g(x)=-2(x+3)2 -1?

Answers

Answer:

vertical scaling by a factor of -4horizontal translation 5 units leftvertical translation 11 units up

Step-by-step explanation:

We notice that the multiplier of the squared term in f(x) is 0.5; in g(x), it is -2, so is a factor of -4 times that in f(x).

If we scale f(x) by a factor of -4, we get ...

  -4f(x) = -2(x -2)² -12

In order for the squared quantity to be x+3, we have to add 5 to the value that is squared in f(x). That is, x -2 must become x +3. We have to replace x with (x+5) to do that, so ...

  (x+5) -2 = x +3

The replacement of x with x+5 amounts to a translation of 5 units to the left.

We note that the added constant after our scaling changes from +3 to -12. Instead, we want it to be -1, so we must add 11 to the scaled function. That translates it upward by 11 units.

The attached graph shows the scaled and translated function g(x):

  g(x) = -4f(x +5) +11

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.

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

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).

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:

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

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.

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.

At many golf​ clubs, a teaching professional provides a free​ 10-minute lesson to new customers. A golf magazine reports that golf facilities that provide these free lessons​ gain, on​ average, ​$1 comma 700 in green​ fees, lessons, or equipment expenditures. A teaching professional believes that the average gain is not ​$1 comma 700.

Answers

Answer:

What is it asking?

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

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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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)

Learn more about the exponential function here:

https://brainly.com/question/11487261

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Last year, a women's professional organization made two small-business loans totaling $28,000 to young women beginning their own businesses. The money was lent at 7% and 14% simple interest rates. If the annual income the organization received from these loans was $3,430, what was each loan amount?

Answers

Answer:

$7,000 at a rate of 7% and $21,000 at a rate of 14%.

Step-by-step explanation:

Let x be amount invested at 7% and y be amount invested at 14%.

We have been given that a women's professional organization made two small-business loans totaling $28,000. We can represent this information in an equation as:

[tex]x+y=28,000...(1)[/tex]

The interest earned at 7% in one year would be [tex]0.07x[/tex] and interest earned at 14% in one year would be [tex]0.14x[/tex].

We are also told that the organization received from these loans was $3,430. We can represent this information in an equation as:

[tex]0.07x+0.14y=3,430...(2)[/tex]

Form equation (1), we will get:

[tex]x=28,000-y[/tex]

Upon substituting this value in equation (2), we will get:

[tex]0.07(28,000-y)+0.14y=3,430[/tex]

[tex]1960-0.07y+0.14y=3,430[/tex]

[tex]1960+0.07y=3,430[/tex]

[tex]1960-1960+0.07y=3,430-1960[/tex]

[tex]0.07y=1470[/tex]

[tex]\frac{0.07y}{0.07}=\frac{1470}{0.07}[/tex]

[tex]y=21,000[/tex]

Therefore, an amount of $21,000 was invested at a rate of 14%.

[tex]x=28,000-y[/tex]

[tex]x=28,000-21,000[/tex]

[tex]x=7,000[/tex]

Therefore, an amount of $7,000 was invested at a rate of 14%.

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

How many distinct arrangements can be formed from all the letters of "students"? Please show your work. Thanks!


A) 10,080


B) 40,320


C) 1680


D) 720

Answers

There are a total of 8 letters in student, with 6 different letters ( there are 2 s's and 2 t's).

First find the number of arrangements that can be made using 8 letters.

This is 8! which is:

8 x 7 x 6 x 5 x 4 3 x 2 x 1 = 40,320

Now there are 2 s's and 2 t's find the number of arrangements of those:

S = 2! = 2 x 1 = 2

T = 2! = 2 x 1 = 2

Now divide the total combinations by the product of the s and t's:

40,320 / (2*2)

= 40320 / 4

= 10,080

The answer is A. 10,080

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:

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