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3 years ago

At a school number of boy:number of girls is in the ratio 11:9

Mathematics

1 answer:

const2013 [10]3 years ago

5 0

Answer:

1240 (I'm not so sure but per my calculation that is what i got)

Step-by-step explanation:

Boy : Girl

11 : 9

124 + x : x

11/9 = 124 + x / x

9(124 + x) = 11 x

1116 + 9x = 11x

1116 = 11x - 9x

1116 = 2x

x = 558

Thus, there are 558 girls in the school

Number of boys = 124 + x

= 124 + 558

= 682

Therefore, total number of students = 558 + 682 = 1240 students

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3 years ago

What is the value of x with clear working out please?

nirvana33 [79]

Answer:

Answer:  x is 46° 

Step-by-step explanation:

• Let's first find Angle ACB

${ \rm{ \angle ACB + 23 \degree + 90 \degree = 180 \degree}} \\ \\ { \rm{ \angle ACB = (180 - 90 - 23) \degree}} \\ \\ { \underline{ \rm{ \: \angle ACB = 67 \degree}}}$

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3 years ago

Read 2 more answers

Twenty rubber spheres were compressed with varying amounts of force. The widths and heights of the resulting shapes were measure

Bad White [126]

Answer:

It would be on the side 0-12 so the Y axis

Step-by-step explanation:

Put Vertical Axis (In)

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3 years ago

I can’t remember how to do this if I try a bit longer I can probably figure it out but not sure exactly. Please If anyone can he

UNO [17]

Answer:

£2.38

Step-by-step explanation:

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3 years ago

Graph y = 4x - 1. When x = -2, what is the ordered pair of the solution?

Alenkinab [10]

(-9, -1)

(-9,-1) . -1 because that is the y intercept from the equation.

-9 because when you substitute -2 for x, and multiply by 4, you get -8. Then you subtract one, making the x value -9.

Therefore, the ordered pair of the solution is (-9,-1)

Hope this helps, please consider marking branliest if it did.

7 0

3 years ago