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3 years ago

What is the mean of the set of values? Round to the nearest tenth. 5 9 1 2 7 3 1 8 8 1 3

Mathematics

1 answer:

Andre45 [30]3 years ago

5 0

Answer:

4.4

Step-by-step explanation:

Mean is the average. Add up all the number and divide by the total # you added together.

5+9+1+2+7+3+1+8+8+1+3 = 48

Since there were 11 number added, divide 48 by 11

48/11 = 4.363

Rounded to the nearest tenth (6 in the hundredth place increasess the 3 in the tenth place)

4.4

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A rectangle has an area of 12 square feet and a length of 5 feet. What is its width?

Lera25 [3.4K]

Well, you know that the area of the rectangle is 12 square feet. And you know one of the numbers multiplied to get 12 is 5, so divide 12 by 5. You would get 2.4 as the other number needed.
In this case, 5 feet is the width and 2.4 feet is the length.

8 0

3 years ago

Read 2 more answers

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.

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3 years ago

The ratio of the number of hippos to the number of crocodiles at a watering hole is 4:3. If you draw a double number line diagra

devlian [24]

Answer: 26.67

Step-by-step explanation: multiply 20 and 4/3

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3 years ago

I don’t understand how to do this

Simora [160]

It's looking for the measures

m<F + m<G = 180°

(4x)° + (8x)° = 180°

12x = 180°
÷12 ÷12

x = 15

check your work

m<F + m<G = 180°

(4x)° + (8x)° = 180°

4(15)° + 8(15)° = 180°

60° + 120° = 180°

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4 years ago

Does anybody know the answer to this ?

melisa1 [442]

Answer:

Step-by-step explanation:

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3 years ago