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2 years ago

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A sofa is on sale for 73% off. The sale price is $172.80. What is the regular price?

2 answers:

Lapatulllka [165]2 years ago

7 0

To get the answer you have to divide the sale price $172.80 by 73%.
So first you turn 73% into a decimal by moving the decimal two places to the left turning it into .73

$172.80 divided by .73 = $236.71

You can check by then multiplying $236.71 with .73

myrzilka [38]2 years ago

7 0

The sale price is 27% so we multiply 172.80 by 3 to get a total of 518.40 which is 81% of the original cost but now how do we find the other 19%? well 172.80 divided by .27 gives us 6.40 all we have to do is do the equation 6.40*19 which is 121.60 now we add 518.40 with 121.60 to get 640.00

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Answer:

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Step-by-step explanation:

It is a result that a matrix $A$ is orthogonally diagonalizable if and only if $A$ is a symmetric matrix. According with the data you provided the matrix should be

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With this in mind we can form the matrices $P, D$ that diagonalizes the matrix $A$ so.

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The matrix you have to obtain is the matrix shown below

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Step-by-step explanation:

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