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insens350 [35]
2 years ago
10

Matrices and determinants What is 4c?

Mathematics
2 answers:
-Dominant- [34]2 years ago
7 0

Answer:

\boxed{\sf D}

Step-by-step explanation:

ddd [48]2 years ago
5 0

Answer:

Answer is D.

Step-by-step explanation:

do 4 times every value in the ( )

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nadezda [96]
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What's rate of $ 7.96 for 5 pounds
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I have three times as much money as does my brother. Our combined total is $42. How much does each of us have?
nika2105 [10]
For an instance, i stands for the money that you have, and b stands for the money that brother has.
An equation system based on the problem would be
i + b = 42 (equation 1)
i = 3b (equation 2)

Use substitution method to solve the problem
substitute 3b into i in the equation 1
i + b = 42
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substitute the value of b into the equation 1
i = 3b
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You have $31.5 and your brother has $10.5
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3 years ago
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