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iris [78.8K]
3 years ago
12

Evaluate 4a + 7b + 3a − 2b for a = 5 and b = −3.

Mathematics
1 answer:
blsea [12.9K]3 years ago
5 0

Answer:

<h2>20</h2>

Step-by-step explanation:

4a+7b+3a-2b\qquad\text{combine like terms}\\\\=(4a+3a)+(7b-2b)\\\\=7a+5b\qquad\text{put a = 5 and b = -3 to the expression}\\\\7(5)+5(-3)=35-15=20

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4 years ago
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Using dimensional analysis, what unit of time will make the statement true?
frosja888 [35]

The unit of time that will make the statement true is "day"

<h3>What unit of time will make the statement true?</h3>

The conversion equation is given as:

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So, we have:

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4 0
2 years ago
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Reil [10]
Hello!

First you have to make the denominators the same

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Now you add

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4 0
3 years ago
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6 0
3 years ago
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