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Dmitrij [34]
3 years ago
11

90 students take a test.

Mathematics
1 answer:
Anika [276]3 years ago
5 0

Answer:

Step-by-step explanation:

If there are 90 students and the ratio of boys to girls is 3:2, that means 3x+2x=90

Combine like terms: 5x=90

x=18

2x (girls)=36

3x (boys)=54

1/3 of the boys scored full marks, so 54/3=18 boys scored full marks

The number of girls who scored full marks is half of the number who did not score full marks means that 1/3 of the girls scored full marks. 36/3=12, so 12 girls scored full marks.

(I don't know what the question is sorry if it's incorrect but there's not enough information)

Hope this helps!

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Maksim231197 [3]

Answer:

v = - 3

Step-by-step explanation:

Given

v = u + at ← substitute u = 2, a = - 5, t = 1 into the expression

v = 2 + (- 5 × 1) = 2 + (- 5) = 2 - 5 = - 3

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Answer:

Your answer is

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Step-by-step explanation:

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Any number that is divisible by 3 is also divisible by 6. Find a counterexample to show that the conjecture is false. 24 18 12 21.

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the ratio of adults to children is 7:3. based on this ration, if there was 370 people how many where children
makkiz [27]
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3 years ago
Ion
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Answer: It is being dilated by a scale factor of 1/3.

Step-by-step explanation:

The pre-image has the coordinates (0,0) (6,0) (6,-3) and (0,-3) and a transformation has been applied to it to get the coordinates of the image to be (0,0) (2,0) (2,-1) ( 0,-1)

Looking at the coordinates we can see that to get from 6 to 2 you will have to multiply by  1/3 and to  get from -3 to -1 you will have to multiply by 1/3.

This means that pre-image was dilated  by a scale factor of 1/3.

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4 years ago
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