alainabbyboo22
The ratio of the measures of two supplementary angles is 7:3. Find the measures of the angles.
A. 126° and 54°
B. 72° and 18°
C. 159° and 21°
D. 69° and 21°
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jim_thompson5910
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Hint:
If "The ratio of the measures of two supplementary angles is 7:3", then
7x+3x = 180
Solve for x. Then use this to find 7x and 3x
Hpbby
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10x=180
Hpbby
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simplify
alainabbyboo22
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i'm so confused !
jim_thompson5910
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What is 180 divided by 10
alainabbyboo22
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18
jim_thompson5910
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So x = 18
jim_thompson5910
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Now use this to find 7x and 3x
Hpbby
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Right so plug in 18 as x
jim_thompson5910
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I'll do 7x
7x = 7*18
7x = 126
Hpbby
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7*18 and 3*18=180
jim_thompson5910
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3*18 = 54, not 180
Hpbby
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You just gave her the answer lol. i put everything in one equation so she could see it better...
jim_thompson5910
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oh i see what you did, you just wrote it in an odd way
Hpbby
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lol sorry
jim_thompson5910
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that's ok
alainabbyboo22
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lol its all good both of you , i appreciate the help ! thank you very much !!
Hpbby
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:)