2 years ago

if a store offers a 20% discount, and the regular price of an item is x dollars, what is the discount price?

Mathematics

1 answer:

Virty [35]2 years ago

3 0

The discount price is .80x or 1-.20x.

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Given the triangle below, what is the length of the third side, rounded to the nearest whole number?

Leno4ka [110]

Answer:

Step-by-step explanation:

You need the Law of Cosines for this, namely:

$x^2=21^2+14^2-2(21)(14)cos58$ where x is the missing side.

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$x^2=325.4075$ so

x = 18.0 or just 18

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2 years ago

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Answer:

Step-by-step explanation:

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1 year ago

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2 years ago

Sail with the equation by completing the square x^2+8x=-3

maxonik [38]

Answer:

The solutions are $x=-4(+/-)\sqrt{13}$

Step-by-step explanation:

we have

$x^{2} +8x=-3$

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$x^{2} +8x+16=-3+16$

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Rewrite as perfect squares

$(x+4)^{2}=13$

square root both sides

$x+4=(+/-)\sqrt{13}$

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2 years ago