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EleoNora [17]
3 years ago
11

ohn and 3 friends are going out for pizza for lunch. They split one pizza and 4 large drinks. The pizza cost $13.00. After using

a $6.00 gift certificate, they spend a total of $13.20. Write an equation to model this situation, and find the cost of one large drink.
Mathematics
1 answer:
Temka [501]3 years ago
8 0
4 large drinks
The pizza cost $13.00
$6.00 gift certificate
d= cost of one drink

equation
4d + 13 - 6 = 13.20
4d + 7 = 13.2
4d = 6.2
d = 1.55

answer
the cost of one large drink is $1.55

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Melody used the ratio table at the right to find the number of people served with 15 pounds of ground turkey find her error and
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The first column is the ratio you start with. The next column in the table should be the reduced fraction. To properly reduce a fraction, you divide the same number on the top and bottom of the fraction. Melody instead subtracted 1 in the top and bottom of the fraction to reduce it. She should have divided the top and bottom by 2 to get the second column of 1 pound of turkey and 3 people served.
The final column is designed to be the answer to the initial question of how many people are fed by 15 pounds of ground turkey. Starting with column 2 (the reduced ratio of 1/3), multiply the top by 15 to get 15 pounds of ground turkey. Then do the same to the bottom of the fraction. 3 x 15 = 45 people fed.
So the table should have been
Pounds of turkey    2    1    15
People served        1    3    45
Melody's overriding error was in believing that adding or subtracting numbers to both the top and bottom of a ratio/fraction keep its value the same. Instead, only multiplying or dividing the top and bottom by the same number creates an equivalent fraction.
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3 years ago
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insens350 [35]

Answer:

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Step by step explanation.....

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4 years ago
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Anyone know the answer
Arlecino [84]

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Step-by-step explanation:

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4 years ago
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