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OlgaM077 [116]
3 years ago
15

There are 65 children in a form 1. There are 15 more boys than girls. What is

Mathematics
1 answer:
7nadin3 [17]3 years ago
8 0

Answer:

8:5

Step-by-step explanation:

there are 25 girls, and 40 boys, so you find the common factor between them,which is 5 and divide each number by 5.

25/5=5 girls

40/5=8 boys

so the ratio of boys to girls is 8:5

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The equation Ax+By=10 goes through the coordinates (6,5) and (-2,-5).What are the values of A and B
wolverine [178]

Given:

The equation Ax+By=10 goes through the coordinates (6,5) and (-2,-5).

To find:

The values of A and B.

Solution:

We have,

Ax+By=10

It goes through the coordinates (6,5) and (-2,-5). It means these points will satisfy the equation.

A(6)+B(5)=10

6A+5B=10       ...(i)

A(-2)+B(-5)=10

-2A-5B=10       ...(ii)

Adding (i) and (ii), we get

(6A+5B)+(-2A-5B)=10+10

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Put A=5 in (i), we get

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5B=-20

Divide both sides by 5.

B=-4

Therefore, the values of A and B are 5 and -4 respectively.

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3 years ago
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Alja [10]

Answer:

The answer for this question is D

Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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