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3 years ago

Michelle got 23 out of 30 questions correct on her quiz. To find out what her percent correct is, Michelle should:

Mathematics

1 answer:

vladimir1956 [14]3 years ago

7 0

Answer:

To find the percentage use the formula B. Take 30 divided by 23 and then multiply by 100.

Step-by-step explanation:

23/30 x 100 = 76.666% or 77% if rounded to the nearest whole number

Hope this helps

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If the cylinder above is similar to a second cylinder that has a radius of 10mm, what is the height of the second cylinder

julsineya [31]

Answer:

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Step-by-step explanation:

Given

Cylinder 1:

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Cylinder 2

$r = 10mm$

See attachment

Required

Determine h, the height of the small one

To do this, we make use of the following equivalent ratios;

$R : H = r : h$

This gives:

$15 : 45 = 10 : h$

Express as fraction

$\frac{15 }{ 45 }= \frac{10 }{ h}$

Simplify

$\frac{1 }{ 3}= \frac{10 }{ h}$

Cross multiply

$h *1 = 3 * 10$

$h = 30$

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