12.56 because 12.56=2πr, so solve for r and you get 2=r. So you plug in 2 for r in the area formula which is A=πr^2, which will give you A=π(2^2), which is A=π(4), which will give you A=12.56
Answer:
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Step-by-step explanation:
78
1 | 78
2 | 39
3 | 26
6 | 13
So the factors are 1, 2, 3, 6, 13, 26, 39, and 78
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hope it helps
Answer:
r^2 - s = 14 + 9i
Step-by-step explanation:
r^2 = 4^2 + 8i + i^2
r^2 = 16 + 8i - 1
r^2 = 15 + 8i
r^2 - s = 15 + 8i - (1 - i)
r^2 - s = 15 + 8i - 1 + i
r^2 - s = 14 + 9i
<span>Solve:(x+5)^2 =16
</span><span>
(x+5)^2 =16
x^2 + 10x + 25 - 16 = 0
</span>x^2 + 10x + 9 = 0
(x+9)(x+1) = 0
x + 9 = 0
x = -9
x +1 = 0
x = -1
answer: x=-1 and x = -9
Solve: a^2 +12a + 36 = 225
a^2 +12a + 36 = 225
a^2 +12a + 36 - 225 = 0
a^2 +12a - 189 = 0
(a-9)(a+21) = 0
a - 9 = 0
a = 9
a + 21 = 0
a = -21
answer: a = -21 and a = 9
Answer:
9750= 12w + 15z
W= 250
Z= 450
1 block of Mahogany is $450.
Step-by-step explanation: