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Wittaler [7]
3 years ago
13

The quantities x and y are proportional.

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

r=3,r=25/27,r=3

Step-by-step explanation:

In equation y=rx

make r the subject of the formula by dividing both sides by x

r=y/x

1). when y=15 and x=5

r=15/5

r=3

2). when y=25 and x=81/3

r=25/81/3

r=25÷81/3

r=25*3/81

r=75/27

r=25/27

3). when y=33 and x=11

r=33/11

r=3

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