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Zarrin [17]
3 years ago
8

The area of a circle is 16 π cm 2 . What is the circle's circumference?

Mathematics
1 answer:
Andrej [43]3 years ago
5 0
A=piR^2
16pi=piR^2    So R=4cm

C=2piR
C=8pi cm

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I’ll rate your answer 5 stars if you can help me pls
kap26 [50]
Answer:
104:2=52
3*52=156
1) 156/3
2)364/7
7*52=364
7 0
3 years ago
Read 2 more answers
Rewrite the equation by completing the square. 4 x^{2} +20x +25 =0
Ede4ka [16]

Answer:

(x+5/2)^2 = 0

Step-by-step explanation:

4 x^{2} +20x +25 =0

Divide by 4

4/4 x^{2} +20/4x +25/4 =0

x^2 +5x +25/4 =0

Subtract 25/4 from each side

x^2 +5x +25/4 -25/4 =-25/4

x^2 +5x  =-25/4

Take the coefficent of x

5

Divide by 2

5/2

Square it

25/4

Add it to each side

x^2 +5x +25/4 =-25/4+25/4

(x+5/2)^2 = 0

Take the square root of each side

x+5/2 = 0

x = -5/2

8 0
3 years ago
Read 2 more answers
Simplify expression <br> -6-2(3x+8)
KIM [24]

Answer:

-6x-22

Step-by-step explanation:

-6 -2 (3x + 8)

Distribute the 2.

-6 -6x -16

Rewrite the expression.

-6x -6 - 16

Subtract -6 from 16.

The answer is -6x-22

5 0
3 years ago
What are the coordinates of the vertex of the parabola y=x^2+2x-1
kozerog [31]
Y = x^2 + 2x - 1 = x^2 + 2x + 1 - 1 - 1 = (x + 1)^2 - 2
The vertex of a parabola given by y = a(x - h)^2 + k is (h, k).

Therefore, the vertex of y =  (x + 1)^2 - 2 is (-1, -2)
3 0
3 years ago
My question is this can you help me​
jok3333 [9.3K]

Answer:

It's 1/4

Step-by-step explanation:

It's closer to 0 than the other fractions

4 0
3 years ago
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