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9. Use substitution, 20 + 0.07(100) --) 20 + 7 --) $27; the answers D.

10. A is the answer for it the total number treats is divided by 10 and suppose to be equal to 60 bags.

11. 33.07 + 5.89 + 5(2.71) + 6.75 = amount you had in the beginning.

12. 4^2(5g + g) + 17 --) 16(5g + g) + 17 --) 80g + 16g + 17 --) 96g + 17; answer is c.

13.3^2(5x + 2x) - 24 --) 9(5x + 2x) - 24 --) 45x + 18x - 24 --) 63x - 24; answer is c.

14. 2x + 6x = 56 --) 8x = 56 --) x = 7; answer is c.

15. 20 + (1.5h - 1.5) = 32; the answer is a.

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answer: ♡♡♡♡♡♡♡♡♡♡

step-by-step explanation:

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²