4 years ago

Help with these please and highly appreciate the help !!!!!!!

1 answer:

7 0

Which one will we start with? I'll explain 21. multiply it out and the clean it up. you should end up with 140=A if I'm correct.

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Students were asked how many pairs of shoes they owned. Their responses were 8, 2, 1, 5, 7, 6, 2, 2, 8, and 3.

IRINA_888 [86]

Answer:

4.4

Step-by-step explanation:

The mean is the sum of the data divided by the number of data values. so add them all together and then divide by how many numbers you added together.

Here is an example 1,3,4,5,7 so add 1+3+4+5+7=20 then you divide 20 by 5 and the mean is 4 for this example.

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3 years ago

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tiny-mole [99]

The answer would be c

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3 years ago

Write a problem that the expression 3(-7) -10 + 25 = -6

Sav [38]

This is true because the answer is -6 = -6

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4 years ago

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What is 1000000000000000000000000 called?

STALIN [3.7K]

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septillion

Step-by-step explanation:

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3 years ago

The radius of a cylinder is doubled and its height is halved. Find the ratios of their surface areas.

Inessa [10]

Answer: 1:1

Step-by-step explanation:

Let r be the radius and h be the height of a cylinder.

Formula: Curved surface area of cylinder = $2\pi rh$

Now, if radius of a cylinder is doubled and its height is halved, then new radius will be R= 2r and new height will be $H=\dfrac{1}{2}$

Now, new surface area = $2\pi RH= 2\pi(2r)\dfrac{h}{2}= 2\pi rh$

Ratio of curved surface areas : $\dfrac{\text{Surface area}}{\text{New surface area}}=\dfrac{2\pi rh}{2\pi rh}=\dfrac{1}{1}$

Hence, the ratios of their surface areas = 1:1 .

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3 years ago