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3 years ago

How do you do number 1. And 2. ?????

Mathematics

1 answer:

dybincka [34]3 years ago

4 0

1. You would find 3.5% of 120,000 which is 4,270. then add it to 120,000 which is 162,270.
2. you would multiply every number in the word problem to get the interest. That would be $402.50 which is the answer

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 70% pure anti

andre [41]

Answer:

First brand of antifreeze: 21 gallons

Second brand of antifreeze: 9 gallons

Step-by-step explanation:

Let's call A the amount of first brand of antifreeze. 20% pure antifreeze

Let's call B the amount of second brand of antifreeze. 70% pure antifreeze

The resulting mixture should have 35% pure antifreeze, and 30 gallons.

Then we know that the total amount of mixture will be:

$A + B = 30$

Then the total amount of pure antifreeze in the mixture will be:

$0.2A + 0.7B = 0.35 * 30$

$0.2A + 0.7B = 10.5$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.7 and add it to the second equation:

$-0.7A -0.7B = -0.7*30$