Which sequences have a common ratio of 1/4
choose exactly two answers that are correct

a. -8, 2, -1/2, 1/8, -1/32
b. 3, 12, 48, 192, 768
c. -1/5, -1/20, -1/80, -1/320, -1/1280
d. 320, 80, 20, 5, 1.25

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points