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3 years ago

The ratio of boys to girls in a class is 5:3. There are 32 students in the class. How many students are boys?

1 answer:

8 0

Class ratio of girls to boys is 3:5
So there are 3 girls and 5 boys in 8 students
If there are 32 students, then 3/(3+5) * 32 = 12 girls, and 5/(3+5) * 32 = 20 boys

Hope it helps you?

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OLEGan [10]

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2 years ago

Find the perimeter of the quarter-circle. Give your answer to the nearest whole number.

Bezzdna [24]

Answer:

The perimeter of the quarter-circle is 200 cm.

Step-by-step explanation:

Given that the angle of quarter-circle is 90°. So using Length of Arc formula, you are able to find the length of curve :

$arc = \frac{θ}{360} \times 2 \: \pi \: r$

Let r be radius = 56 cm,

Let θ = 90°

$arc = \frac{90}{360} \times 2 \times\pi \times 56$

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$= \frac{1}{2} \times \pi \times 56$

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We have already found the arc. Next we have to add up together to find the perimeter :

$p = 56 + 56 + 28\pi$

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$p = 200 \: cm \: (3s.f)$

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3 years ago

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Shtirlitz [24]

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3 years ago

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vichka [17]

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Step-by-step explanation:

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3 years ago

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Xelga [282]

Answer:

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Step-by-step explanation:

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3 years ago