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seropon [69]
2 years ago
14

I need help on this question

Mathematics
1 answer:
Morgarella [4.7K]2 years ago
6 0

Answers : A and D

Step - by - step explanation :

tip : when finding constant of proportionality it's always Y divided by X

A = what is 22.5 divided by 3 ?  7.5 ( now multiply 7.5 by the next X [ 4 ] )

what is 7.5 x 4 ?  30 ( and since on the graph it also says 30 then you can assume this one has a proportional relationship )

B = what is 12 divided by 3 ?  4 ( now multiply 4 by the next X [ 5 ] )

what is 4 x 5 ?  20 ( and because the graph says 25 then you know it's NOT a proportional relationship )

C = what is 8.5 divided by 2 ?  4.25 ( now multiply 4.25 by the next X [ 5 ] )

what is 4.25 x 5 ?  21.25 ( and because the graph says 22.5 then you know it's NOT a proportional relationship )

D = what is 10 divided by 2 ?  5 ( now multiply 5 by the next X [ 3 ] )

what is 5 x 3 ?  15 ( and since on the graph it also says 15 then you can assume this one has a proportional relationship )

( sorry it took me so long to write this )

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hoa [83]
Hi! The answer for the first one is 500
50 times 9=450
10% is 50
50 times 10= 500
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The discount was $50
For the second one the answer is $10 
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3 0
3 years ago
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AfilCa [17]

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Step-by-step explanation:

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2 years ago
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Answer:

Brainliest please

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Step-by-step explanation:

<h3>use algebra</h3>

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son= he is 4 times less than his father, 3/4a

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DerKrebs [107]

Answer:

$5,735

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
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yarga [219]

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