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Varvara68 [4.7K]
2 years ago
15

So far, Rachel has burned 117.2 calories. She wants to burn a total of 300 calories. How many more calories must Rachel burn?

Mathematics
1 answer:
Wittaler [7]2 years ago
6 0

Answer:

Step-by-step explanation:

No of calories Rachael burns = 117.2

No of calories Rachael has to burn = 300

Remaining calories = 300 - 117.2 = 182.8

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One day, a person went to a horse racing area. Instead of counting the number of humans an horses, he conuted 74 heads and 196 l
BigorU [14]
X = the number of humans and y = the number of horses.

x+y=74
2x+4y=196

Because the number of humans and horses together is 74, and the total number of legs (2 per every human, x, and 4 per every horse, y) is 196.  Then, just use elimination to solve.

-2(x+y=74)\\2x+4y=196\\\\-2x-2y=-148\\2x+4y=196\\\\2y=48\\y=24

So, now that you have y, you can plug it into the first equation to find x:

x+y=74\\x+24=74\\x=50

So, x = 50 and y = 24, so there are 50 humans and 24 horses.
The correct answer is B.
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
At a party, there are 2 six-packs of regular cola, 1 six-pack of diet cola, 1 six-pack of cherry cola, and 1 six-pack of vanilla
aliya0001 [1]

Answer:

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stira [4]

Answer:

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6 0
3 years ago
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Answer:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...

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