Answer:
No mistake
Step-by-step explanation:
2x + y = 5
x - 2y = 10
y = 5 - 2x
x - 2(5 - 2x) = 10
x - 10 + 4x = 10
5x - 10 = 10
5x = 20
x = 4
2(4) + y = 5
y = -3
She made no mistake
You can check by plugging in x = 4 and y = -3 into the original equations . They fit exactly.
Answer:
90ft2
Step-by-step explanation:
rectangle= BH
Triangle= BH/2
add em together and you get you're answer
(B is base and H is height)
The answer should be 42 times.
6x + y = 1 , y, y, -6x + 1 or 1 - 6x
to find the geometric mean, multiply them together, then take the square root
3*147
441
sqrt(441)
21
The geometric mean is 21