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3 years ago

Each quarter weighs 0.2 ounces. How much money has been stolen from the bank? Report the amount in $. Ex. "$528" *

Mathematics

1 answer:

kodGreya [7K]3 years ago

8 0

Answer:

$640

Step-by-step explanation:

512/0.2 = 2560 quarters

2560 quarters = 640 US Dollars

Hope this helps !

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A triangle has sides measuring 2 inches and 7 inches. If x represents the

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Answer:

its d.

Step-by-step explanation:

the other guy is wrong

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3 years ago

Ten year old Chi learned a lot of math from his older brother, Shing. One day, Shing told him that when you multiply a number by

deff fn [24]

Answer:

This is true

Step-by-step explanation:

10x1 is 10. 10x10 is 100. but if u did 100x10 you would add the amount of zeros total. which would be 1000. so 400x10 is 4000

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3 years ago

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· Hollywood Studios in Disneyworld is building a 2nd parking garage for The Muppets. The

Margarita [4]

Answer:

1264 and 632

Step-by-step explanation:

x + 2x = 1896

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3 years ago

Please help me ASAP <br><br><br><br> What is 7/16 x 1/2

Alja [10]

Answer: 7/32

Step-by-step explanation:

Multiply straight across the numerator and do the same for the denominator.

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16x2=32 (denominator)

Answer is 7/32

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3 years ago

Find the variance of the following data. Round your answer to one decimal place. x 1 2 3 4 5 P(X=x) 0.3 0.2 0.2 0.1 0.2

Reptile [31]

The variance of a distribution is the square of the standard deviation

The variance of the data is 2.2

<h3>How to calculate the variance</h3>

Start by calculating the expected value using:

$E(x) = \sum x* P(x)$

So, we have:

$E(x) = 1 * 0.3 + 2* 0.2 +3 * 0.2 + 4 * 0.1 + 5 * 0.2$

This gives

$E(x) = 2.7$

Next, calculate E(x^2) using:

$E(x^2) = \sum x^2* P(x)$

So, we have:

$E(x^2) = 1^2 * 0.3 + 2^2* 0.2 +3^2 * 0.2 + 4^2 * 0.1 + 5^2 * 0.2$

$E(x^2) = 9.5$

The variance is then calculated as:

$Var(x) = E(x^2) - (E(x))^2$

So, we have:

$Var(x) = 9.5 - 2.7^2$

$Var(x) = 2.21$

Approximate

$Var(x) = 2.2$

Hence, the variance of the data is 2.2