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12345 [234]
3 years ago
6

What is 9$ discounted to 4$ in percent form?

Mathematics
1 answer:
faust18 [17]3 years ago
4 0
9 dollars is 4 dollars.
Let's find the percent form of the discount
=> 4 dollars / 9 dollars =  0.44
Now, let's convert it to percentage
=> 0.44 * 100% = 44%
Thus the discount is 44%

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2 years ago
Solve using substitution y=x-3 4x+y=32
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Hey there !

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2 years ago
A paddle boat company charges $15 rental fee plus $12.75 per hour for rentals. If Jimmy has $45, which inequality can he use to
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8 0
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

Read more about variance at:

brainly.com/question/15858152

4 0
1 year ago
A scatterplot has a positive, linear correlation. Which statement is true about the relationship between the x- and y-values?
Yuki888 [10]
B. As the x-values increase, the y- valuebtend to decrease.
5 0
3 years ago
Read 2 more answers
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