Identify the coefficient in the expression 5x^2 +1

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

The surface area of the triangular prism is .

Given that δabc is similar to δdef, which is a possible trigonometric ratio for ∠d? a) tan d = 24 30 b) tan d = 30 24 c) tan d = 18 24 d) tan d = 24 18