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Zigmanuir [339]
3 years ago
7

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

Mathematics
2 answers:
Norma-Jean [14]3 years ago
6 0
4a + 7b + 3a - 2b
Combine like terms
7a + 5b
Plug in the values for a and b.
7(5) + 5(-3)
35 - 15
20
RSB [31]3 years ago
3 0
The answer is 20. I hope this helps.
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Answer:

Step-by-step explanation:

The salaries are the same. Only the fraction of how much is saved is quite different.

Equation

x ( 9/11 - 7/9) = 1584

Explanation: The salary amount is x. The fractional amounts saved are also given. You have to take the difference because one of the people saves more than the other.

The amount that is more is 1584.

Solution

9/11 = 0.8182

7/9 = 0.7778

9/11 - 7/9 = 0.8182 - 0.7778 = 0.0404

Put that into the equation.

x(0.0404) = 1584                     Divide by 0.0404)

x(0.0404) = 1584/0.0404        

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

( -22s^4t -8st) /2st

Separate into parts

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LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

8 0
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