peyton3825
Answered

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Tell whether the angles are complementary or supplementary. Then find the value of x.

Tell Whether The Angles Are Complementary Or Supplementary Then Find The Value Of X class=

Sagot :

mhanifa

Answer:

  • 7) x = 5
  • 8) x = 20

Step-by-step explanation:

Complementary angles form a right angle and supplementary angles form a straight angle.

#7

Complementary:

  • 65 + 5x = 90
  • 5x = 25
  • x = 5

#8

Supplementary:

  • 2x + 6x + 20 = 180
  • 8x = 160
  • x = 20

Step-by-step explanation:

1)

Since we know that sum of two complementary angles are 90⁰

=> 65 + 5x = 90

=> 5x = 90 - 65

=> 5x = 35

=> x = 35/5

=> x = 7⁰

2)

Since we know that sum of two supplementary angle are 180

=> 2x + 6x + 20 = 180

=> 8x = 180 - 20

=> 8x = 160

=> x = 160/8

=> x = 20

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