Which is the same as dividing a number by 10? a. 1,539 × 100 b. 153.9 ÷ 10 c. 1.539 ÷ 10 d. 100 ÷ 15.39

Ineed to know the rule for the sequence. plz !

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

Find the area of the regular hexagon if a side is 20 cm.