Please help I am so lost rn(please put step by step if you can)thanks!
1 answer:
Answer:
x=-5 and y= 4
Step-by-step explanation:
To eliminate x, add up both equations
9y= 36
divide both sides by 9
y=36/9
y= 8
To eliminate y, multiply the first equation by 8
-16x + 8y = 112
2x+ 8y= 22
Subtract equation 2 from equation 1
-18x = 90
Divide both sides by -18
x= 90/-18
x= -5
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3x + 5 = 20
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Yes they are equivalent. You get -3 when you try solving the actual equation.
Answer: 71
Step-by-step explanation:
F(8)= 2(8)^2-7(8)-1
=71
If this is a 30, 60, 90 triangle, which I think it is, it would b 4
Answer:
D
Step-by-step explanation:
