2 years ago

How many pounds of a 15% copper alloy must be mixed with 700lb of a 30% copper alloy to make a 25.5% copper alloy?

Mathematics

1 answer:

vitfil [10]2 years ago

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You can join me in my room with you a lot more

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A company manufactures skateboards. Each skateboard requires 1 6/7 hours of labor to assemble and 2 1/2 hours of labor to finish

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Answer: The total cost will be $156.85.

Step-by-step explanation:

Since we have given that

Time taken by labor to assemble the each skateboard is given by

$1\frac{6}{7}\ hours\\\\=\frac{13}{7}\ hours$

Time taken by labor to finish and stain each skateboard is given by

$2\frac{1}{2}\ hours\\\\=\frac{5}{2}\ hours$

Cost of labour to the company per hour = $36.00

According to question,

We will use "Distributive Property":

$a\times (b+c)=a\times b+a\times c$

$36(\frac{13}{7}+\frac{5}{2})\\\\=36\times \frac{13}{7}+36\times \frac{5}{2}\\\\=\frac{468}{7}+18\times 5\\\\=\frac{468}{7}+90\\\\=\frac{468+630}{7}\\\\=\frac{1098}{7}\\\\=\$156.85$

Hence, the total cost will be $156.85.

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3 years ago

Nine months ago Alexa deposited $7,000 in a three-year CD. She has received $224.16 in interest.

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7000 + 224.16 = $7,224.16
This would the balance in her account.

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3 years ago

ms.fords class start art at 9:30 and finish at 10:15.they spend twice as much time in math class.If they start math at 1:10,What

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They finish math class at 2:45

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3 years ago

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The length of a rectangle is fourteen less than two and a half times its width. The perimeter of the

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Answer:

Step-by-step solution:

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Please help me with this math problem!! Will give brainliest!! :)

8090 [49]

Answer:

A. 17

B. 16

Step-by-step explanation:

F(5)

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1 year ago