2 years ago

What is the sales tax on a jacket priced at $275 if the sales tax rate is 7%?

Mathematics

1 answer:

Viktor [21]2 years ago

5 0

The answer is 19.25, because when you ..

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Pls help !!!<br> find the rate of change on [-1, 4]

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2 years ago

There is a photo attached<br><br>tan 270 is incorrect!

wlad13 [49]

$\dfrac{1-\cos135^\circ}{\sin135^\circ}=\dfrac{1-\left(\cos^2 67.5^\circ-\sin^2 67.5^\circ\right)}{2\sin67.5^\circ\cos67.5^\circ}=\dfrac{1-\left(1-\sin^2 67.5^\circ-\sin^2 67.5^\circ\right)}{2\sin67.5^\circ\cos67.5^\circ}=\medskip\\=\dfrac{2\sin^2 67.5^\circ}{2\sin67.5^\circ\cos67.5^\circ}=\dfrac{\sin 67.5^\circ}{\cos 67.5^\circ}=\tan 67.5^\circ$