Trouve la (les) solution(s) des équations suivantes, lorsque celle(s)-ci existe(nt).
a. X² = 9.
d. x² = 0
b, x² = 5.
e. x² = - 16
C. 4x² = 49​

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?

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

00 points ! missy’s rotation maps point k(17, –12) to k’(12, 17). which describes the rotation? 270° counterclockwise rotation 90° counterclockwise rotation 90° clockwise rotation 180° rotation