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Kamila [148]
3 years ago
10

The racial girls to boys and my third hour class is 2:3 . There are 12 boys in my class how many girls are there

Mathematics
2 answers:
jonny [76]3 years ago
4 0
Steps:
1. Do a proportion
2/3 times x/12
2. Do 12 times 2=24
3. Divide 24 by 3
4. Your answer is 8 girls
Or you could do it this way
Steps:
1. You could have just multiplied the 2 by a 4 to get 8.12 boys divided by 3 boys is 4. That means you multiple the two by 4 to get the girls.
kati45 [8]3 years ago
3 0
2:3=?:12
2:3=2/3
   2           ?
-----  =  -------
   3           12
Cross multiply
2x12=24
3x?=24
24/3=8
There are 8 girls.

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Area of the canvas: 96 = 2 · W² + 2 · W L,
where W is the width and L is the length of a back and a top side. Two square sides have area W².
2 W L = 96 - 2 W² /:2
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L = ( 48 - W² ) / W.
The inside volume of the shelter:
V = L · W · W = L · W²
V = W² · ( 48 - W² ) / W ;
V = 48 W - W³
We have to find the derivative:
V ` = 48 - 3 W²
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