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ss7ja [257]
3 years ago
11

The Ratio of boys to girls at a middle school is 3:2. If the school has 400 people how many will be boys?

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
5 0
You have to divide 400 by 5. That will equal 80. Since the ratio is 3:2 Just multiply 3 by 80 then 2 by 80! :-) 

You can check it by simplifying it again.
jek_recluse [69]3 years ago
4 0
240 people are boys 
1.You have to find the total of boys and girls there are by adding 3 with 2. (5)
2. You have to divide 400 by 5. (80)
3. You have to multiply 80 by 3 to get the amount of boys there are in 400 people. (240)
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Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference
ollegr [7]

Answer: 1unit.

Step-by-step explanation:

Area of the rectangle

A = length × width

Since the area = 20 and the width is x and the length is x + 1.

We now substitute for the values in the above formula and solve for x

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20 = x( x + 1 ), we now open

20 = x² + x , then re arrange.

x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means

Here, I am going to solve using factorization by grouping

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Therefore, the solution for x will be

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3 years ago
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ss7ja [257]
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4 0
2 years ago
Read 2 more answers
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