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IRINA_888 [86]
3 years ago
12

A survey found that 78% of students do their homework before 10:00 P.M. Predict how many students out of 975 do their homework b

efore 10:00 P.M. Select the answer closest to the value.
Mathematics
1 answer:
Ber [7]3 years ago
5 0
I'm pretty sure that it's 760 people out of 975 do there homework before 10pm is because if u multiply 975 by 78% it gives u your answer... I think that's how u find the persentage of a number
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Ajax is 5 and 1 fourth feet tall. His sister is 3 eighths foot shorter than Ajax How tall is Ajax Sister?
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Answer:

4\frac{3}{4} feet tall

Step-by-step explanation:

Ajax is "5 and 1 fourth feet tall", which can be written as the mixed number 5\frac{1}{4} .

His sister is "3 eighths foot shorter", so she's 3/8 feet shorter than 5 1/4.

So, this is just a subtraction problem:

5\frac{1}{4} -\frac{3}{8}

To solve this, we want to convert 5 1/4 into an improper fraction, which is: \frac{21}{4} . Now, we want to find a common denominator. In this case, that common denominator is 8, so \frac{21}{4} =\frac{42}{8} .

Finally, we subtract 3/8 from 42/8: \frac{42}{8} -\frac{3}{8} =\frac{39}{8} . So, Ajax's sister is 39/8 feet. Converting this into a mixed number, we have: 39/8 = 4\frac{6}{8} =4\frac{3}{4} .

Therefore, Ajax's sister is 4\frac{3}{4} feet tall.

Hope this helps!

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Answer:

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