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Marianna [84]
3 years ago
7

Tell whether the ratios are proportions: 11/12, 33/36

Mathematics
1 answer:
REY [17]3 years ago
5 0

Yes, they're proportional.

If you simplify 33/36 (divide the numerator and denominator by 3) you get 11/12, so it's proportional (equal) to 11/12.  

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Two friends are collecting cards. Frank has 7 more than half the number of cards as his friend. Together they have 42 cards. How
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Answer:

The number of cards Frank has is 18 and the number of cards his friend has is 24.

Step-by-step explanation:

<u><em>The correct question is </em></u>

Two friends are collecting cards. Frank has 6 more than half the number of cards as his friend. Together they have 42 cards. How many cards does each friend have?

Let

x ----> the number of cards that Frank has

y ----> the number of cards that his friend has

we know that

Together they have 42 cards

x+y=42 ----> equation A

Frank has 6 more than half the number of cards as his friend

x=\frac{y}{2} +6 ---> equation B

Solve the system by substitution    

Substitute equation B in equation A

\frac{y}{2} +6+y=42

solve for y

\frac{3}{2}y=42-6\\\\\frac{3}{2}y=36\\\\y=36(2)/3=24

<em>Find the value of x</em>

x=\frac{24}{2} +6=18

therefore

The number of cards Frank has is 18 and the number of cards his friend has is 24.

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3 years ago
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3/4 divided by what equals 12
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Step-by-step explanation:

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