Solve the systems of equations 2y+7x=-5, 5y-7x=12

We can solve this by substitution.

Look at the second equation. If we rearrange to find 7x, we can substitute in the value into the first equation.

Therefore

Now let's replace the 7x in the first equation with 5y - 12:

     (substitute in 7x = 5y - 12)

Now that we know y, we can find x by substituting in y = 1 into any equation we want. I will use the equation: 7x = 5y - 12

  (Substitute in y = 1)

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12m

step-by-step explanation:

square root means have of a number so have of 3 is 1.5 then multiply it by 8 and you get your answer!

answer: 10 meter

step-by-step explanation:

need details