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3 years ago

15

holly had $5000 in her bank account she withdrew $800 to buy a new bike. what is the percent decreace in the balance of her acco

unt.

1 answer:

Oksana_A [137]3 years ago

6 0

800 was decreased from 5000.
therefore the percentage reduction will be
(800/5000) * 100
800/50
16%

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We can move the constant outside:

$\displaystyle B^\prime(t)=24.6\frac{d}{dt}[\sin(\frac{\pi t}{10})(8-t)]$

Now, we will utilize the product rule. The product rule is:

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Then:

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(The derivative of u was determined using the chain rule.)

Then it follows that:

$\displaystyle \begin{aligned} B^\prime(t)&=24.6\frac{d}{dt}[\sin(\frac{\pi t}{10})(8-t)] \\ \\ &=24.6[(\frac{\pi}{10}\cos(\frac{\pi t}{10}))(8-t) - \sin(\frac{\pi t}{10})] \end{aligned}$

Therefore:

$\displaystyle B^\prime(6) =24.6[(\frac{\pi}{10}\cos(\frac{\pi (6)}{10}))(8-(6))- \sin(\frac{\pi (6)}{10})]$

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Answer:

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3 years ago