9 A population of scores has u = 44. In this population, a score of X = 40 corresponds to z=-0.50. What is the
population standard deviation?
a. 4
b.-8
c. 8
d. 2

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

figure c

step-by-step explanation:

hope this .