The expression x/x+4 is equal to zero when

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

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in