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Elina [12.6K]
2 years ago
12

Anne pays cash for a Tv. The store owner gives her a 10% discount. She pays $702. How much was the price of the Tv before a disc

ount?
Mathematics
1 answer:
Whitepunk [10]2 years ago
6 0

Answer:

$780

Step-by-step explanation:

P = Original Price

P (100% - 10%) = $702

P (90%) = $702

(P (.9)) / .9 = $702 / .9

P = $780

Check answer:

$780 (90%) = $702

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Step-by-step explanation:

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y = ax + b

a is the slope, b is the y-intercept (when x=0).

the slope is the ratio y/x indicating how much y changes, when x changes for a certain amount of units when going from one point to another.

going from (7, 2) to (2, 12) :

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so, the slope is 10/-5 = -2

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we get b by using the coordinates of one of the points as x and y. e.g. (7, 2)

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3 years ago
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