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prohojiy [21]
3 years ago
9

The ratio of girls to boys in a classroom is 5 to 4.how many girls are in the class if there is a total of 27 students

Mathematics
1 answer:
statuscvo [17]3 years ago
4 0
5 girls : 4 boys
5 + 4 = 9 students

= 27 students ( 5girls / 9 students )
*cancel students units*
= 27 ( 5 girls / 9)
= 15 girls
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if your car gets 26 miles per gallon how much does it cost to drive 420 miles when gas is $2.80 per gallon​
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Answer:

$45.22

Step-by-step explanation:

The number of miles per gallon can be represented by the ratio:

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Since we know the unit rate of 26 miles per gallon of gas, we can set up a proportion, or equivalent ratios, to find the number of gallons needed for 420 miles:

\frac{26}{1}=\frac{420}{x}, where 'x' is the number of gallons of gas

cross-multiply and divide:  26x = 420 or x ≈ 16.15 gallons

If gas is $2.80 per gallon, take the total number of gallons needed and multiply by $2.80:

16.15 x $2.80 = $45.22

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A side of the triangle below has been extended to form an exterior angle of 164". Find
Arada [10]

Given:

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