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bezimeni [28]
3 years ago
15

I need help

Mathematics
2 answers:
Trava [24]3 years ago
5 0
The answer to that question is the sum of the hours he studied for on both days, which will be 1/4 + 3/8.

However, we cannot add fractions with different denominators. In this case, it's 4 and 8.

So if we want to add them, we must make the denominators similar to each other. How to make 4 into 8? We multiply it by 2: 4 x 2 = 8.

BUT when we multiply fractions, we must multiply both the numerator and the denominator by the same number to keep its original value. In this case, if you want to multiply 4 by 2, you must also multiply 1 by 2.

=> SO to make 1/4 into y/8, we will multiply it like this (1 x 2) / (4 x 2) = 2/8

Now we can add the 2 fractions together. 2/8 + 3/8 = (2 + 3)/8 = 5/8. THIS IS YOUR ANSWER.

TL;DR: He studied 5/8 (or 0.625) hour altogether on both days.
mario62 [17]3 years ago
5 0
The answer is 5/8 hours

You just need to sum it up:
\frac{1}{4} + \frac{3}{8} = \frac{1*2}{4*2} + \frac{3}{8}= \frac{2}{8}+ \frac{3}{8}=\frac{2+3}{8}=\frac{5}{8}
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Determine if this relationship forms a direct variation. Verify your answer.
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we know that

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c) for x=3 y=1.50--------> y/x=1.50/3-----> 0.50

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<span>the relationship forms a direct variation. </span>

the equation is

y=0.50*x


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for x=3

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for x=5

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