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just olya [345]
3 years ago
11

Simplify the expression 5a-2a+9

Mathematics
2 answers:
Nastasia [14]3 years ago
7 0

7a+9 that’s the answer





oksano4ka [1.4K]3 years ago
3 0

It would be 3a+9. You want to add the like terms. To solve, first add all the "a's". You jave 5a, minus 2a, so you are left with 3a. There's only 1 whole number so just leave it be.

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2 years ago
The table shows the average weight of animals. How many more tons does a blue whale weigh than an African elephant? Explain how
AVprozaik [17]

Answer:

The African elephant weighs <u>111.5 tons</u> less than a blue whale.

Step-by-step explanation:

Given:

Animal                         Weight(pounds)

African Elephant            15,000

Blue Whale                   238,000

Now, to find the weight of how more tons does a blue whale weigh than an African elephant.

As given, 1 ton = 2,000 pounds.

So, to convert the weight from pound to tons by dividing:

African elephant =15000\div 2000=7.5\ tons.

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Now, to get the weight of how more tons is blue whale weigh than an African elephant we subtract:

Blue\ whale - African\ elephant

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Therefore, the African elephant weighs 111.5 tons less than a blue whale.

8 0
2 years ago
Jim and Em baked 33 macaroons.
bearhunter [10]

Answer: 19 macaroons

Step-by-step explanation:

Let's create an equation to represent this situation. Let x represent the number of macaroons that Em made.

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33=2x+5

33-5=2x+5-5

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28/2=2x/2

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This means that Em made 14 macaroons.

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Therefore, Jim baked 19 macaroons.

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