On a test that has a normal distribution, a score of 7 falls three standard deviations below the mean, and a score of 31 falls one standard deviation above the mean.
Determine the mean of this test.

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

Me. i need an answer asap. , you! select the correct answer from each drop-down menu. simplify the given polynomial and use it to complete the statement. the polynomial simplifies to an expression that is a blank with a blank degree of blank .

With #! i’ve tried to figure it out but i can’t.