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8th grade (Illustrative Mathematics)

Course: 8th grade (Illustrative Mathematics) > Unit 4

Lesson 5: Extra practice: Linear equations
Math
8th grade (Illustrative Mathematics)
Linear equations and linear systems
Extra practice: Linear equations
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Equation practice with angle addition

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Problem

Given
PQ―⊥PS―
m∠QPR=7x−9∘
m∠RPS=4x+22∘
Find m∠QPR:
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
∘
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