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agasfer [191]
2 years ago
14

Mark bought gifts for his friends, and each gift cost $9. Let y represent the total cost and x represent the number of gifts. Wr

ite an equation to represent the proportional relationship between the total cost and the number of gifts he bought.
Mathematics
2 answers:
lukranit [14]2 years ago
5 0

Answer:

easy

Step-by-step explanation:

olga nikolaevna [1]2 years ago
3 0

Answer:

y = 9x

Step-by-step explanation:

You can set up linear equations like this: y = mx + b, where m is the slope or rate, and b is the y-intercept.

9 would be the slope, since he has to pay $9 per gift.

The y-intercept is when x = 0, but if he doesn't buy any gifts, he won't have to pay anything, so b = 0. You don't have to include it since it's 0.

So, it's just y = 9x

Hope that helps! :D

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Katie has read 32 % of a book. If she has read 80 pages, how many more pages does Katie have left to read?
mestny [16]
Percentage of pages of a book read by Katie = 32%
Total number of pages of the book read by Katie = 80
Let us assume the number of pages that the book has = x
Then
(32/100) * x = 80
32x = 80 * 100
32x = 8000
x = 8000/32
   = 250
So the book has a total of 250 pages in it.
Then
The number of pages that Katie still needs to read = 250 - 80
                                                                                 = 170
So Katie needs to read 170 more pages in the book.

7 0
3 years ago
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Yuliya22 [10]
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Anastaziya [24]

Answer:

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Input parameters & values:

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Step-by-step explanation:

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