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The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a system to determine the correct numbers)
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The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a system to determine the correct numbers)
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May 20, 2018
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The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a system to determine the correct numbers)
Mathematics
high-school
Ngroot
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Ngroot
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(x+y) / 2 =7
multiply both sides by 2
x+y=14
3x=.5y
divide both sides by .5
6x=y
plug 6x in for y
x+(6x)=14
simplify
7x=14
divide both sides by 7
x=2
DarrenRhodes
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May 23, 2018
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DarrenRhodes
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