Twenty times the square of a non-zero number is equal to 15 times the number. what is the number?

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Describe the relationship between the angles of similar triangles and the sides of similar triangles