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Ksivusya [100]
3 years ago
12

The ratio of girls to boys in the grade is 7 to 8. If there are 140 girls, how many boys are there

Mathematics
2 answers:
Kipish [7]3 years ago
4 0

there are 160 boys in the grade

Schach [20]3 years ago
3 0
There are 160 boys.

Set up a proportion:

the ratio of girls to boys is 7/8, we don’t know how many boys there are but we know that there are 140 girls.


7/8 = 140/x

Make sure that girls and girls are across from each other in the proportion. 7 should be across from 140. 8 is across from x. X represents how many boys there are.

Solve for X (the amount of boys) and you get 160 boys.

And you can always check your answer by plugging it back into the problem.
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Jobisdone [24]

Answer:

I think it's 139.

Step-by-step explanation:

5+5=10

10-3=7

7+70=77

77-47=30

30+109= 139

4 0
3 years ago
If BU is 8 and UA is 4 and AN is 24 what is GU
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A profit formula for dining plates from the previous year was modeled by the function P(d) = –15d2 + 1,200d – 2,000. The manufac
dem82 [27]

Answer:

P(d)=-33.75d^2+1800d-2000

Step-by-step explanation:

The profit function is:

P(d) = -15d^2+1,200d-2,000

Where

P is the profit

and

d is the number of units sold

Now, there is a 50% increase in number of units sold, so d will become:

50% = 50/100 = 0.5

d + 0.5d = 1.5d

So, we have to replace "d" with "1.5d" in the function, which makes it:

P(d) = -15d^2+1,200d-2,000\\P(d) = -15(1.5d)^2+1,200(1.5d)-2,000\\P(d)=-15(33.75)d^2+1800d-2000\\P(d)=-33.75d^2+1800d-2000

From the equations shown, last answer choice is correct.

P(d)=-33.75d^2+1800d-2000

7 0
3 years ago
I’m confused on this one
irina1246 [14]

There are 5 fats all together.
If 3 of them are saturated, then the other 2 aren't.
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5 0
3 years ago
Whats the number of 10% of 24
Leokris [45]

Answer:

2.4

Step-by-step explanation:

10% of 24

Make the 10% a decimal.

0.10

Multiplication!!!

0.10×24

0.10×24=2.4

7 0
3 years ago
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