What is the sum of the multiples of 6 between 6 and 999?
here's what i did:
n = 996/6 = 166?
d = 6
t1 = 6

sn = n/2 [2 (t1) + (n-1)d]

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?