Pythagorean theorem please help

Pythagorean theorem: a^2 + b^2 = c^2

c is always the hypotenuse (longest side of the triangle)

Plug the numbers in:

17^2 + ?^2 = 19^2

?^2 = 19^2 - 17^2

?^2 = 361 - 289

?^2 = 72

? = 8.48528137424

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: