3 years ago

Write the following using algebraic notation using x as the unknown number:

Mathematics

1 answer:

andrew11 [14]3 years ago

3 0

2X-9 is this what you wanted

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the length of a rectangle is 2 inches less than twice its width. If the perimeter of the rectangle is 74 inches, what is the are

schepotkina [342]

If the width is w and the length is l, then 2w-2=l and 2w+2l=72 (using the perimeter equation). Plugging 2w-2 in for l, we get 2w+(2w-2)*2=72 and 6w-4=72. Adding 4 to both sides, we get 6w=76. After that, we divide both sides by 6 to get 74/6=w. Since l=2w-2=136/6, we get (136/6)(74/6)=656.75=area

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3 years ago

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blondinia [14]

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3 years ago

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A pack or cinnamon-scented pencils sells for $4.00. What is the sales tax rate if the total cost of the pencils is $4.32?

horsena [70]

.32 because 4.00 plus .32 is 4.32

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