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Gina Wilson unit 4 homework 3 help!

Gina Wilson unit 4 homework 3 help!-example-1
User Ngruson
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Answer:

Explanation:


Exercise 11

4x + 3 = 9x - 37

9x - 4x = 3 + 37

5x = 40

x = 40/5

x = 8


m 1 = 4 · 8 + 3 = 32 + 3 = 35°

m 2 = 180 - (120 + 35) = 180 - 155 = 25°

m 3 = 180 - 60 = 120°

m 4 = 60°

m 5 = 60°

m 6 = 60°

m 7 = 180 - (120 + 35) = 180 - 155 = 25°

m 8 = 180 - 60 = 120°

m 9 = 9 · 8 - 37 = 72 - 37 = 35°


Exercise 12


3x + 18 = 7x - 58

7x - 3x = 58 + 18

4x = 76

x = 76/4

x = 19°

m A = 3 · 19 + 18 = 57 + 18 = 75°

m B = 7 · 19 - 58 = 133 - 58 = 75°

m C = 2 · 19 - 8 = 38 - 8 = 30°

Exercise 13

8x - 17 = 5x + 1

8x - 5x = 17 + 1

3x = 18

x = 18/3

x = 6°

m Q = 8 · 6 - 17 = 48 - 17 = 31°

m S = 5 · 6 + 1 = 30 + 1 = 31°

m R = 19 · 6 + 4 = 114 + 4 = 118°


EXERCISE 14

7x -37 = 3x + 23

7x - 3x = 37 + 23

4x = 60

x = 60/4

x = 15

LM = 7 · 15 - 37 = 105 - 37 = 68

KM = 3 · 15 + 23 = 45 + 23 = 68

KL = 9 · 15 - 40 = 135 - 40 = 95



Exercise 15

13x - 21 = 8x - 6

13x - 8x = 21 - 6

5x = 15

x = 15/5

x = 3


XY = 13 · 3 - 21 = 39 - 21 = 18

YZ = 8 · 3 - 6 = 24 - 6 = 18

XZ = 3 + 4 = 7

User Alexis Benoist
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