If the length of AC equals 18, what is the length of the midsegment DE?
A)
6
B)
9
C)
12
D
15

b) 9

The Triangle Midsegment Theorem states that the mid-segment of a triangle joins the midpoints of two sides of a triangle such that its length is half the length of the third side of the triangle. Therefore overline DE = overline AC Z = 18 2 =9

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

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