The answer is C. y= 3/2 x. You can check by multiplying 3/2 by 3, if you get 7, it is correct
<span> 9 × 10^9
---------------- = 3 x 10^13
</span><span>3 x 10^-4
answer
3 x 10^13 times larger</span>
Step-by-step explanation:
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Answer:
x = -7 ±3i
Step-by-step explanation:
(x+7)^2+9=0
Subtract 9 from each side
(x+7)^2+9-9=0-9
(x+7)^2=-9
Take the square root of each side
sqrt((x+7)^2) = ±sqrt(-9)
We know sqrt(ab) = sqrt(a) sqrt(b)
x+7 = ±sqrt(-1) sqrt(9)
We know that sqrt(-1) is the imaginary number i
x+7 = ±i *3
x+7 =±3i
Subtract 7 from each side
x+7-7 = -7 ±3i
x = -7 ±3i