Solve the equation -4(8+y)=90.

Rearrange the formula c^2 = a^2 + b^2 for b

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?