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tangare [24]
3 years ago
13

SOMEONE HELP ME! I WILL MARK AS BRAILY

Mathematics
2 answers:
natali 33 [55]3 years ago
7 0
C, I believe it is, hope it’s right
Aneli [31]3 years ago
5 0

Answer:

im pretty sure its A i hope it is have a good day :)

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Write a function describing the relationship of the given variables.
zhuklara [117]

Answer:

The function is A = 10√r

Step-by-step explanation:

* Lets explain the meaning of direct variation

- The direct variation is a mathematical relationship between two

  variables that can be expressed by an equation in which one

  variable is equal to a constant times the other

- If Y is in direct variation with x (y ∝ x), then y = kx, where k is the

 constant of variation

* Now lets solve the problem

# A is varies directly with the square root of r

- Change the statement above to a mathematical relation

∴ A ∝ √r

- Chang the relation to a function by using a constant k

∴ A = k√r

- To find the value of the constant of variation k substitute A and r

 by the given values

∵ r = 16 when A = 40

∵ A = k√r

∴ 40 = k√16 ⇒ simplify the square root

∴ 40 = 4k ⇒ divide both sides by 4 to find the value of k

∴ 10 = k

- The value of the constant of variation is 10

∴ The function describing the relationship of A and r is A = 10√r

8 0
2 years ago
Read 2 more answers
4. The manager of a furniture store bought 25 vases at a total cost of
Kamila [148]

The answer is D. 25

All that was need to be done was to divide

5 0
2 years ago
Read 2 more answers
An 18 ft. tree casts a 15 ft. long shadow as shown in the following figure. Which of the following is the angle formed by the su
BabaBlast [244]

Answer:

The angle is 50.2°.

Step-by-step explanation:

The tree and its shadow from a right triangle with the tree being the perpendicular and the shadow being the base as shown in the figure attached.

Therefore the angle θ formed by the sun's rays and the ground is:

\theta = tan^-1(\frac{18}{15} )=\boxed{50.2^o}

8 0
2 years ago
John throws a rock straight down with speed 12 m/s from the top of a tower. the rock hits the ground after 2.37 s. what is the h
Amiraneli [1.4K]
12*2.37= 28.44

The tower is 28.44 meters tall.






3 0
2 years ago
Which of the following statements is true for 6.24 repeated? Question 16 options: A) It's rational because 6. = 68∕33. B) It's i
mr_godi [17]

Answer:

true

Step-by-step explanation:

true

8 0
3 years ago
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