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Shalnov [3]
3 years ago
9

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
1 answer:
navik [9.2K]3 years ago
5 0
(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


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Anettt [7]

Answer:

#2) is 25

Step-by-step explanation:

the best way to solve any of theses is in the order of pemdas:

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for example lets do #2

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when two parentheses are next to Each other you multiply. 4x4 is 16

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7 0
4 years ago
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3 0
3 years ago
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daser333 [38]
12 times the quantity 15 minus a number (d)....

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8 0
3 years ago
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