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vladimir1956 [14]

3 years ago

5

5/7+(-1/3)-(-1/2) Show work pls

1 answer:

ELEN [110]3 years ago

7 0

30/42-14/42+21/42= 37/42

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Among the 7th graders in a middle school, three quarters of them play at least one sport. Among the 7th graders who play sports,

kifflom [539]

Answer:

512

Step-by-step explanation:

Let the number of 7th graders in the school is x.

As three-quarters of them play at least one sport, so, the number of 7th graders who play sport = $\frac 3 4 x$ .

Among the 7th graders who play sports, half of them play more than one sport. So, the number of 7th graders who play more than one sport $= \frac 1 2\times \frac 3 4 x=\frac 3 8 x$ .

Among the 7th graders who play more than one sport, one-third of them play more than two sports. So, the number of 7th graders who play more than two sport $= \frac 1 3\times \frac 3 8 x=\frac 1 8 x$ .

Among the 7th graders who play more than two sports, one-quarter of them play more than three sports.

So, the number of 7th graders who play more than three sport $= \frac 1 4\times \frac 1 8 x=\frac{1}{32} x$ .

7th graders play more than three sports at the school= 16

$\Rightarrow \frac{1}{32} x=16$

$\Rightarrow x =16 \times 32$

$\Rightarrow x = 512$

Hence, the total numbers of 7th graders in the school are 512.

4 0

3 years ago

Is 3+9 rational or irrational?

zzz [600]

Answer:

I Think 3+9 is irrational

5 0

2 years ago

The attendance at a community block party was 3 children for every 2 adults. Which could be the number of children and adults at

kozerog [31]

Answer:

C

Step-by-step explanation:

If you divide the amount of children by 3 you get 82 then times in by 2 you get 264 which is the number of answers

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dybincka [34]

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Finally, Juno and her satellite were able to return home to her family.

Step-by-step explanation:

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lora16 [44]

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Step-by-step explanation:

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