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svlad2 [7]
3 years ago
12

I need help with this problem

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0
Don’t look at the file there just tricking you
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Miguel borrows $2000 for 3 years at 8% simple interest.
german
Interest+original=amount to pay off

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3 0
3 years ago
an element with a mass of 540 grams decays by 17.9% per minute to the nearest tenth of a minute how long will it be until there
STatiana [176]

Answer:

It'll take approximately 9.1 minutes

Step-by-step explanation:

The decay of this element can be modeled by the following expression:

m(t) = 540*(1 - 0.179)^t

Where m is the mass of the element in a given minute t. This expression comes from a compounded interest formula, with negative rate, since they will work in the same manner. Therefore to find how long until it reaches 90 g, we need to make m = 90 and solve for t.

90 = 540*(0.821)^t

(0.821)^t = 90 / 540

(0.821)^t = 1/6

ln(0.821^t) = ln(1/6)

t*ln(0.821) = ln(1) - ln(6)

t*ln(0.821) = - ln(6)

t = -ln(6)/ln(0.821) = 9.08452

It'll take approximately 9.1 minutes

7 0
3 years ago
Read 2 more answers
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