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MariettaO [177]
3 years ago
8

Use the commutative law of addition to find an expression equivalent to 7(c+3)

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Answer:

7c+21

Step-by-step explanation:

multiply 7 by c  and 7 times 3

7c and 21

7c+21

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Each week, Abigail earns $75 for every shift she works at the pizzeria and $25 for every dog-walking job. She uses the expressio
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75x + 25y

Part A: coefficients = 75 & 25 variables = x & y

Part B: Terms = 2
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- term 2: 25y

Terms are the different parts or groups of an equation. Therefore, 75x is one term and the other is 25y. They are each a part of the equation. Without them you wouldn't have an equation at all.

Part C: Pizzeria pay = 75x because that is how much she makes each shift she works.

- Hope this helps. =)
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Find 6% of 3,500 and 4% of 4,000 then subtract the two
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the density of pure gold 1,204 pounds per cubic foot? how many cubic feet is 481.6lbs of pure gold?
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Answer:

Volume of Gold = 0.4 cubic feet.

Step-by-step explanation:

First we have to make sure the units are same as the units the answer is required in.

Answer should be given in cubic feet.

Density is given in pounds per cubic foot. And Mass is given in pounds. So units are in order. Therefore, we can go ahead with the calculation.

The Density of Gold = [Mass of Gold/Volume of Gold]

By substituting values,

1204 ponds per cubic foot = [481.6 pounds / Volume of gold]

Making Volume of God the subject of the equation,

Volume of Gold = [481.6 pounds / tex]1204[/tex] ponds per cubic foot ]

Volume of Gold = 0.4 cubic feet.

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3 years ago
Given h ( x ) = − 3 x + 2 , solve for x when h ( x ) = − 4.
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Step-by-step explanation:

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