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wel
3 years ago
8

Write an expression that is equivalent to 9 + 5x - 5 + 3x

Mathematics
1 answer:
Vladimir79 [104]3 years ago
3 0

Answer:

8x + 4

Step-by-step explanation:

change it around

9-5   5x+3x.

9-5=4,  5x+3x=8x.

4+8x or 8x+4

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Miss Martinez purchase two kinds of candy for a math game. Diplo pops cost $.50 each and the sneakers cost $.60 each. She purcha
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Answer:

The number of  Diplo pops  D = 18

The number of sneakers   S = 12

Step-by-step expla nation:

Given:

Cost of one Diplo pops = $.50

Cost of one sneakers  = $.60

Total number of candies purchased = 30 pieces

cost of the number of candies purchased = $16.80

To Find:

Number of each type of candies = ?

Solution:

Let

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The number of sneakers be  S

Total number of candies = 30

S+D = 30

S= 30 - D--------------------------------------(1)

and cost of 30 candies is $16.80

S(0.50) + D(0.60) = 16.80----------------(2)

Substituting (1) in (2)

(30 - D)(0.50) + D(0.60) = 16.80

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D = 18

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3 years ago
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