Is this correct? (19)^2 + (b)^2 = (25)^2 361 + b^2 = 722 b^2 = 722 – 625 b = 97 = x inches the x inches thing is because i'm still a bit confused on that part, but is the rest correct? and can anyone me with the x inches part?

Starting with your (19)^2 + (b)^2 = (25)^2:

                                361   +  b^2   = 625 (not 722)

Then b^2 = 625 - 361 =  264.

Taking the square root of both sides, we get b = plus or minus √264, or approx. 16.25.

Please, include the diagram or a detailed verbal description of the problem at hand, when you post it.

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w