Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

Which graph represents the equation y =4x

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)