The length of a square garden is twice a number. If the perimeter of the garden is 36, find the number.

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?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Factor the polynomial by its greatest common monomial factor.