Which expression is a perfect cube?
-1.452m18,15p22
© -1,331m18715021
1,331m18.,15,22
o 1,452m18,150,21

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?