anonymous
  • anonymous
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°
Mathematics
chestercat
  • chestercat
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jim_thompson5910
  • jim_thompson5910
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
anonymous
  • anonymous
10x=180
anonymous
  • anonymous
simplify

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anonymous
  • anonymous
i'm so confused !
jim_thompson5910
  • jim_thompson5910
What is 180 divided by 10
anonymous
  • anonymous
18
jim_thompson5910
  • jim_thompson5910
So x = 18
jim_thompson5910
  • jim_thompson5910
Now use this to find 7x and 3x
anonymous
  • anonymous
Right so plug in 18 as x
jim_thompson5910
  • jim_thompson5910
I'll do 7x 7x = 7*18 7x = 126
anonymous
  • anonymous
7*18 and 3*18=180
jim_thompson5910
  • jim_thompson5910
3*18 = 54, not 180
anonymous
  • anonymous
You just gave her the answer lol. i put everything in one equation so she could see it better...
jim_thompson5910
  • jim_thompson5910
oh i see what you did, you just wrote it in an odd way
anonymous
  • anonymous
lol sorry
jim_thompson5910
  • jim_thompson5910
that's ok
anonymous
  • anonymous
lol its all good both of you , i appreciate the help ! thank you very much !!
anonymous
  • anonymous
:)

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