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balu736 [363]
2 years ago
14

What is 5a+2.4(a+0.5b)−0.2b

Mathematics
1 answer:
Tom [10]2 years ago
3 0

Answer: 7.4a+b

1. distribute

=5a+(2.4)(a)+(2.4)(0.5b)+−0.2b

=5a+2.4a+1.2b+−0.2b

2. combine like terms

=5a+2.4a+1.2b+−0.2b

=(5a+2.4a)+(1.2b+−0.2b)

=7.4a+b

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What is equivalent expression 9y+y
andrew11 [14]

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10y

Step-by-step explanation:

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4 0
3 years ago
If Levi purchased a total of 50 ride tickets and game tickets at the amusement park and spent $29. If right tickets cost $.75 ea
erica [24]

Answer: he purchased 16 ride tickets.

Step-by-step explanation:

Let x represent the number of ride tickets that he purchased.

Let y represent the number of game tickets that he purchased.

Levi purchased a total of 50 ride tickets and game tickets at the amusement park. It means that

x + y = 50

If ride tickets cost $.75 each and game tickets cost $.50 each and the total amount spent on the tickets is $29, it means that

0.75x + 0.5y = 29- - - - - - - - - - - -1

Substituting x = 50 - y into equation 1, it becomes

0.75(50 - y) + 0.5y = 29

37.5 - 0.75y + 0.5y = 29

- 0.75y + 0.5y = 29 - 37.5

- 0.25y = - 8.5

y = - 8.5/-0.25

y = 34

x = 50 - y = 50 - 34

x = 16

5 0
3 years ago
Mary bowled six games this week. Her scores were 138,151,198,147,156, and 173. What was her average for those
erica [24]

The average of scores is 160.5

Step-by-step explanation:

Mean is the sum of all values divided by the number of values.

Given scores are:

138,151,198,147,156, and 173

The formula for average score is given by:

Avg = \frac{Sum}{items}

Putting values

Avg = \frac{138+151+198+147+156+173}{6}\\Avg = \frac{963}{6}\\= 160.5

The average of scores is 160.5

Keywords: Mean, Average

Learn more about mean at:

  • brainly.com/question/8811218
  • brainly.com/question/853574

#LearnwithBrainly

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3 years ago
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it is in  a term in biology that came into use in the 1800's to show about anything that can produce disease Hope this helps can I get branliest answer?

Step-by-step explanation:


8 0
3 years ago
A sphere with a radical of 8.5cm
jek_recluse [69]
Take the common denominator and divide by 3
5 0
3 years ago
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