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Alborosie
3 years ago
9

The radius of a circle is 13 find its area un terms of pi​

Mathematics
1 answer:
lukranit [14]3 years ago
3 0

Answer:

530.66

Step-by-step explanation:

A = πr²

13 x 13 = 169

169 x 3.14 = 530.66

Let me know if this helps!

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The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function? The domain is all real n
dedylja [7]

Answer:

The domain is all real numbers. The range is {y|y ≤ 16}

Step-by-step explanation:

we have

f(x)=-x^{2}-2x+15

This is a the equation of a vertical parabola open downward

The vertex is a maximum

The vertex is the point (-1,16)

see the attached figure

therefore

The domain of the function is all real numbers ----> interval (-∞,∞)

Te range of the function is

y\leq 16

All real numbers less than or equal to 16 ----> interval  (-∞,16]

8 0
3 years ago
Read 2 more answers
What is the surface area of a sphere with the given dimension? Express your answer to nearest hundredth. Use 3.14 for pi. Radius
pav-90 [236]
Okay. The equation for a sphere's surface area is A = 4 * pi * r^2. Let's plug 5 in for r. 
4 \pi (5^2) = 4(3.14)*25 = 100 * 3.14 = 314
I got 314 cm^2 is the surface area, but it always helps to double check work! Hope this helps!
3 0
3 years ago
Read 2 more answers
Can anyone do this ??
Ilya [14]

Answer:

I think is A tell me if I am wrong

Step-by-step explanation:

7 0
4 years ago
Waylon is typing a paper for keyboarding class. He has typed 648 words in 8 minutes. He types at the same rate each minute. Whic
Vlad1618 [11]

Answer:

that is the correct answer

7 0
2 years ago
7 groups of 8=6 groups of 8 plus
vredina [299]

Answer:

<u>7 groups of 8 = 6 groups of 8 plus 1 group of 8</u>

Step-by-step explanation:

1. Let's review the information given to answer the question correctly:

7 groups of 8 = 6 groups of 8 plus ?

2. Let's answer the question, this way:

How much are 7 groups of 8? 56 = 7 * 8

How much are 6 groups of 8? 48 = 6 * 8

What is the difference between 7 groups of 8 and 6 groups of 8?

(7 - 6 ) * 8 = 1 * 8

Therefore,

<u>7 groups of 8 = 6 groups of 8 plus 1 group of 8</u>

6 0
3 years ago
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