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2 years ago

A jacket is on sale for 40% off .The sale price is $90.00.What is the original amount of the jacket

1 answer:

34kurt2 years ago

6 0

Set up a proportion
90/x = 60/100
60x = 9000
x = 150

if you're wondering why I used 60 instead of 40 in the proportion it is because $90 is 60% of the original price, not 40%

hope this helps!

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(6b^3)(2a+7b)


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Answer: 
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Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

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Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$

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The formula of variance is given below,

$\sigma^2=\frac{1}{n}\sum{(X-\bar{X})^2}$

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The standard deviation of the data is 315.7011.

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katen-ka-za [31]

Answer:

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Step-by-step explanation:

4(5x + 3y - 7) ← multiply each term in the parenthesis by 4

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