Ross is trying to solve the equations 20 + 20y = 640. What is the value of
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Plz help

First isolate y by moving the constant over to the other side of the equation. Then you want to divide by the value of y, to get just y.

20 + 20y = 640 ⇔ subtract 20 from both sides to isolate y

20 -20 +20y = 640 - 20

20y = 620

20y/20 = 620/20

y= 31

his first public project he is asked to create a small scale drawing. the garden is a right triangle with base 25m and height 30m. are you trying to solve for the last side/hypotenuse? the irrational form of the answer would be 5\sqrt{61}