Jack spent 30% of the money he earned mowing lawns last summer. If Jack spent $45, what was the total amount of money he earned mowing lawns last summer?

$150

Step-by-step explanation:

Percent Proportions Formula = a/b = n/100

45/b = 30/100

Then do cross multiplication

4500/30

which would equal $150.

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

the answer is c hope it

step-by-step explanation: