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lions [1.4K]
3 years ago
13

if a class of 20 students 40% are boys. twenty-five percent often boys and 50% of the girls wear glasses. how many students wear

glasses.
Mathematics
1 answer:
shtirl [24]3 years ago
7 0
2 boys and 6 girls wear glasses, so 8 students wear glasses
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Calculate the volume of the following object:
frozen [14]

Answer:

262.44 cubic metres.

Step-by-step explanation:

First, we can calculate the volume of the cylinder by doing pi * r^2 * h. In this case, r is 5 / 2 and h is 7.

pi * (5/2)^2 * 7 = pi * 25/4 * 7 = pi * 6.25 * 7 = pi * 43.75 = 3.14159265 * 43.75 = 137.4446784 cubic m.

Seconds, we calculate the volume of the cube. It is 5^3 = 5 * 5 * 5 = 25 * 5 = 125 cubic m.

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Hope this helps!

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Lynna [10]

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