A On a test that has a normal distribution, a score of 32 falls two standard deviations
above the mean, and a score of 20 falls one standard deviation below the mean.
Determine the mean of this test.

How do i do this? i don’t understand

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.