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Consider the figure below, where line a is parallel to line b:

Angle 4 = 12m - 4
Angle 5 = 10m + 20
Calculate the measure of Angle 5.

Sagot :

rainbowleah22

Answer:

Angle 5= 140

Step-by-step explanation:

I assume you are talking about parrallel lines and a transversal. If that is the case, I can guess that angles 4 and 5 are alternate exterior angles. Therefore they are congruent.

  1. 12m-4=10m+20
  2. 12m=10m+24     You add 4 to -4 and 20
  3. 2m=24                You subtract 10m from 10m and 12m
  4. m=12                    Divide both sides by 2
  5. 10(12)+20             Substitute m for 12 in the equation for Angle 5
  6. 120+20                Multiply 10 by 12
  7. 140                      Add 120 and 20
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