Can someone please help me

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?