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3 years ago

Area of a circle mathematics

Mathematics

2 answers:

ruslelena [56]3 years ago

5 0

……..The answer is C……………..

Elan Coil [88]3 years ago

3 0

Answer:

Step-by-step explanation:

Area of circle = $\pi r^2$

15/2 = 7.5

7.5 = radius

Plug 7.5 into the formula:

$\pi 7.5^2$ = 176.71

Closest answer to 176.71 = 176.625

Answer would be C.

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tia_tia [17]

Answer:

Step-by-step explanation:

He will guess correctly 25% of the time.

He has 84 questions

25% of 84

.25 * 84

We should expect that he will get 21 questions correct

6 0

3 years ago

Help!! I need help!

Tasya [4]

Answer:

Step-by-step explanation:

-5x-49>113

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6 0

3 years ago

The total sales of a company (in millions of dollars) t months from now are given by S(t) = 0.03t3 + 0.5t2 + 9t + 4. Find S'(t).

mars1129 [50]

Answer:

$S(2) = 24.24$ . This means that in the second month, the company will sell 24.24 millions of dollars in total.

$S'(2) = 11.36$ . This means that in the second month the total sales will increase in 11.36 millions of dollars from the previous month.

d. The total sales 11 months from now will be $203.43 million dollars.

Step-by-step explanation:

The total sales of the company, in millions of dollars is given by the following formula:

$S(t) = 0.03t^{3} + 0.5t^{2} + 9t + 4$

This function has the following derivative, which represents the variation in relation to the previous month.

$S'(t) = 0.09t^{2} + t + 9$

Find S(2) and S'(2)

$S(t) = 0.03t^{3} + 0.5t^{2} + 9t + 4$

$S(2) = 0.03*(2)^{3} + 0.5*(2)^{2} + 9*2 + 4 = 24.24$

$S(2) = 24.24$ . This means that in the second month, the company will sell 24.24 millions of dollars in total.

$S'(t) = 0.09t^{2} + t + 9$

$S'(2) = 0.09*2^{2} + 2 + 9 = 11.36$

$S'(2) = 11.36$ . This means that in the second month the total sales will increase in 11.36 millions of dollars from the previous month.

Choose the correct interpretation of S(11)=203.43.

S represents total sales, and S(11) is the total sales 11 months from now.

So the correct answer is:

d. The total sales 11 months from now will be $203.43 million dollars.

7 0

3 years ago

Is 1/2(12x + 24) and -6 (-x- 2)

ikadub [295]

I hope this helps you

12x/2+24/2

6x+12

-6 ( -x-2)

6 0

3 years ago

The graph is A. Neither even nor odd B.odd C.even D. Symmetrical about the y axis

dybincka [34]

Answer:

Odd

Step-by-step explanation:

The function is odd because cubic functions are always odd.

3 0

3 years ago

Area of a circle mathematics ​

Area of a circle mathematics