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SVETLANKA909090 [29]
3 years ago
5

At a fast food​ restaurant, 10 cheeseburgers​ w/onion and 5 orders of french fries contain 6900 calories. 5 cheeseburgers​ w/oni

on and 3 orders of french fries contain 3660 calories. How many calories are in a cheeseburger​ w/onion? How many calories are in one order of french​ fries?
Mathematics
1 answer:
Leona [35]3 years ago
5 0

Write the equations,

10 c + 5 f = 6900

5c + 3f = 3660

Double,

10c + 6f = 7320

Subtract,

f = 7320 - 6900 = 420

10 c = 6900 - 5f = 6900 - 2100 = 4800

c = 480

Answer: Cheeseburger 480 calories, fries 420 calories

Check:

10 (480) + 5 (420) = 4800 + 2100 = 6900 good

5(480) + 3(420) = 2400 + 1260 = 3660 good

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in one baseball season, peter hit twice the difference of the number of home runs alice hit and 6. altogether, they hit 18 home
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3 years ago
Dori and Malory are tracking their steps taken as a health goal. Dori leaves her house at 12:00 p.m. and walks at 50 steps per m
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Dori leaves her house at 12pm.

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Malory leaves her house at 12:20pm.

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3 0
3 years ago
Whats the answer to these? (These are called Proper fractions.)
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Answer:

1: 7/10

2: 3/10

3: 4/8 (2/4 or 1/2 if you need to simplify it)

Step-by-step explanation:

1: Convert 2/5 to tenths by multiplying the denominator and numerator by two. 3/10 plus 4/10 is 7/10

2: Convert 4/5 and 1/2 to tenths.

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7 0
3 years ago
Read 2 more answers
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