4 years ago

At a store, you are given a 20% discount and you pay a 7% sales tax. Does it matter which is calculated first?

1 answer:

7 0

Yes because you would pay less if the 20% was taken off first because it would be a lower amount since your taking a percent of the whole total and not combining the two

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Step-by-step explanation:

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3 years ago

Sin α = 21/29, α lies in quadrant II, and cos β = 15/17, β lies in quadrant I Find sin (α - β).

Sever21 [200]

$\sin(\alpha-\beta)=\sin\alpha\cos\beta-\cos\alpha\sin\beta$

$\sin\alpha=\dfrac{21}{29}\implies \cos^2\alpha=1-\sin^2\alpha=\dfrac{400}{841}$

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3 years ago

The sum of three consecutive even integers is 126. Let x represent the first integer, x + 2 represent the second integer, and x

LekaFEV [45]

We have that (x) + (x+2) + (x+4) = 126 so 3x + 6 = 126 can be used to find the first integer.

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