A total of $39,000 is being invested in a local bank. The

Mathematics

1 answer:

igor_vitrenko [27]2 years ago

4 0

Answer:

Step-by-step explanation:

b + 1/4b = 39,000

1.25b = 39,000

b = 31,200

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How do you find the area of this composite figure?

Yanka [14]

Split the shape into smaller shapes, (see attachment)
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3 years ago

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Marizza181 [45]

Answer:

Step-by-step explanation:

Hihi. So, this is a nice application of interest rates as well as properties of exponentials/logarithms. As you know, the basic equation for interest rates is A= Pe^(rt) where A is your final amount, P is your initial, r is your rate of interest, and t is the time the money was accumulating interest. After cleaning up, you get in a situation due to you having e still lying around. Luckily, if you take the natural log of e, all you have left behind is the previous exponent. Thus, you can take the natural log of both sides, divide by 4, and then simplify to see that your final interest rate is ~6%