What is the explicit formula for the geometric sequence with this recursive formula? a1=-7
an=an-1*(1/3)
a. an=- 1/3*7^(n-1)
b. an=1/3*(-7)*^(n-1)
c. an=7*(- 1/3)^(n-1)
d. an=-7*(1/3)^(n-1)

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Fast! find the length of cu. the triangles are similar. show your work.