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2 years ago

The standard deviation of some student is 1.4 years, what is their standard deviation next year

Mathematics

1 answer:

astraxan [27]2 years ago

5 0

Answer:

Step-by-step explanation:

1.4 years times 12=16.8

In one year there are 12 months so you add 1.4 times 12

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A pediatricians office tracks the age (in months) in which 25 babies begin to walk. Use the dot plot at the right to answer the

OLEGan [10]

Answer:

A pediatricians office tracks the age (in months) in which 25 babies begin to walk

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2 years ago

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The radius of a cylinder is 7 c m and its height is 10 c m. Find curved surface area and volume.

erma4kov [3.2K]

Answer:

CSA of the cylinder = 440 sq. cm

Volume of the cylinder = 1540 cu. cm

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Step-by-step explanation:

Given:

Radius of the cylinder = 7 cm
Height of the cylinder = 10 cm

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To Find:

Curved surface area
Volume

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Solution:

$\\$

Using formula:

$\dashrightarrow \: \: { \underline{ \boxed{ \pmb{ \sf{ \purple{CSA \: of \: cylinder = 2\pi rh}}}}}} \: \star \\ \\$

<em>Substituting the required values: </em>

$\\$

$\dashrightarrow \: \: \sf CSA {(cylinder)} = 2 \times \dfrac{22}{7} \times 7 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 2 \times 22 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 44 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 440 \: {cm}^{2} \\ \\ \\$

Now,

$\dashrightarrow \: \: { \underline{ \boxed{ \pmb{ \sf{ \purple{Volume {(cylinder)}= \pi {r}^{2} h}}}}}} \: \star \\ \\ \\$

<em>Substituting the required values, </em>

$\\$

$\dashrightarrow \: \: \sf Volume {(cylinder)}= \dfrac{22}{7} \times {(7)}^{2} \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= \frac{22}{7} \times 49 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= 22 \times 7 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= 1540 {cm}^{3} \\ \\ \\$

Hence,

CSA of the cylinder = 440 sq. cm

Volume of the cylinder = 1540 cu. cm

8 0

1 year ago

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QUESTION 17 The sum of two numbers is 53. The larger number is 1 less than 2 times the smaller. What are the two numbers?

Crazy boy [7]

I only know 17 which it should be D

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2 years ago

I NEED SOME HELP PLEASE

slega [8]

Exact answer is 90pi and volume is 283

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2 years ago

Look at the image below plzz urgant help !!!!!! NEED DONE IN TEN MINUTES

daser333 [38]

Answer:

V≈113.1

Step-by-step explanation:

V=πr2h

3=π·32·12

3≈113.09734

5 0

2 years ago

The standard deviation of some student is 1.4 years, what is their standard deviation next year​

The standard deviation of some student is 1.4 years, what is their standard deviation next year