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kotegsom [21]
2 years ago
13

Area of a circle mathematics ​

Mathematics
2 answers:
ruslelena [56]2 years ago
5 0
……..The answer is C……………..
Elan Coil [88]2 years ago
3 0

Answer:

C

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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What is the difference of the two polynomials?
Alex787 [66]
The answer to that question is B.
3 0
3 years ago
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Scientists modeled the intensity of the sun, I, as a function of the number of hours since 6:00 a.m., h, using the
MAVERICK [17]

The functions are illustrations of composite functions.

<em>The soil temperature at 2:00pm is 67</em>

The given parameters are:

\mathbf{I(h) =\frac{12h - h^2}{36}} ---- the function for sun intensity

\mathbf{T(I) =\sqrt{5000I}} -- the function for temperature

At 2:00pm, the value of h (number of hours) is:

\mathbf{h = 2:00pm - 6:00am}

\mathbf{h = 8}

Substitute 8 for h in \mathbf{I(h) =\frac{12h - h^2}{36}}, to calculate the sun intensity

\mathbf{I(8) =\frac{12 \times 8 - 8^2}{36}}

\mathbf{I(8) =\frac{32}{36}}

\mathbf{I(8) =\frac{8}{9}}

Substitute 8/9 for I in \mathbf{T(I) =\sqrt{5000I}}, to calculate the temperature of the soil

\mathbf{T(8/9) =\sqrt{5000 \times 8/9}}

\mathbf{T(8/9) =\sqrt{4444.44}}

\mathbf{T(8/9) =66.67}

Approximate

\mathbf{T(8/9) =67}

Hence, the soil temperature at 2:00pm is 67

Read more about composite functions at:

brainly.com/question/20379727

5 0
2 years ago
Simplify the expression: <br><br> [15 +3(2) - 0]0<br><br> A) 4<br> B) -1<br> C) 0<br> D) 3
raketka [301]

Answer:

The answer is C. So yeah.

3 0
3 years ago
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For what value of x would the expression below be undefined? 6x − 9 x − 5
Marina86 [1]
6x - 9x - 5 =

combine like terms

6 - 9 = - 3

- 3x - 5 = 

leave x by itself

- 3x - 5 = 
+3x
___
  0
       - 5 = 3x

solve for x (division)

        
- 5 = 3x
       ___
         3
-5/3 = x         OR         x = -5/3
3 0
3 years ago
A door is 8 feet tall and 4 feet wide. What is the area?
zysi [14]

Answer:

32

Step-by-step explanation:

a door is rectangular in shape

area = length × breadth

8 × 4

32

7 0
3 years ago
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