8.4 * 10^1 is what I think the answer is
Answer:
It should be 2
Step-by-step explanation:
Answer:
Hope this is right.
1. 7(4x-5)
2. 28x-35
Step-by-step explanation:
it's so hard to find it
Step-by-step explanation:
I didn't know
A) x^2 + y^2 = 80
B) x * y = 12
What is x^2 -y^2?
B) x * y = 12
So y = 12 / x
A) x^2 + (12/x)^2 = 80
x^2 + (12/x)^2 = 80
x^2 + (144/x^2) = 80
Multiplying each side by x^2
x^4 + 144 = 80x^2
x^4 -80x^2 + 144 = 0
X = 1.355 (found by trial and error)
Y =
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8.85608</span></span></span> (found by trial and error)
