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3 years ago

Estimate the quotient using compatible numbers. 2,252 ÷ 7

Mathematics

2 answers:

Fittoniya [83]3 years ago

7 0

321.7. It's rounded down to the appropriate number of figures.

Ede4ka [16]3 years ago

4 0

321.7 is the answer

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5. Cost to store: $65<br> Markup: ?<br> Selling price: $91

makvit [3.9K]

Answer:

40 %

Step-by-step explanation:

the difference between cost and selling price:

91 - 65 = 26

Find the percentage:

26/65 = 0.4 --> 40%

Markup = 40%

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3 years ago

Use these numbers:

White raven [17]

Answer:

45 and 5.

Step-by-step explanation:

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3 years ago

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Mrs galvan's truck averages 24.94 miles per gallon of gasoline. His gasoline tank holds a maximum of 25 gallons. How far could M

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Step-by-step explanation:

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3 years ago

At the local college, a study found that students earned an average of 14 credit hours per semester. A sample of 138 students wa

77julia77 [94]

Answer:

1932 credit hours

Step-by-step explanation:

Create a proportion

credits credits

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1 138

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1932 credit hours

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2 years ago

A metallurgist has one alloy containing 34% copper another containing 48% copper. How many pounds of each alloy must he use to m

Zielflug [23.3K]

Answer:

<h2>36.14 pounds of 34% copper alloy and 9.86 pounds of 48% copper alloy</h2>

Step-by-step explanation:

First alloy contains 34% copper and the second alloy contains 48% alloy.

We wish to make 46 pounds of a third alloy containing 37% copper.

Let the weight of first alloy used be $x$ in pounds and the weight of second alloy used be $y$ in pounds.

Total weight = $46\text{ }pounds=x+y$ $-(i)$

Total weight of copper = $37\%\text{ of 46 pounds = }34\%\text{ of }x\text{ pounds + }48\%\text{ of }y\text{ pounds }$

$\dfrac{37\times 46}{100}=\dfrac{34x}{100}+\dfrac{48y}{100}\\\\ 34x+48y=1702$ $-(ii)$

Subtracting 34 times first equation from second equation,

$34x+48y-34x-34y=1702-34\times46\\14y=138\\y=9.857\text{ }pounds \\x=36.143\text{ }pounds$

∴ 36.14 pounds of first alloy and 9.86 pounds of second alloy were used.

5 0

3 years ago