Which of the following are solutions to the equation below? Check all that apply.
(5x + 1)2 = 7
A. XV
x= -1
C. x= v
B. X=
DD. X =
O E. X =
V7-1
Dexy

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

Use the ratio test to determine whether ∑n=14∞n+2n! converges or diverges. (a) find the ratio of successive terms. write your answer as a fully simplified fraction. for n≥14, limn→∞∣∣∣an+1an∣∣∣=limn→∞.