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Hatshy [7]
3 years ago
5

in an over-fished area, the catch of a certain type of fish is decreasing at an average rate of 8% per year. If this decline per

sists, how long will it take for the catch to reach half of the amount before the decline???
Mathematics
1 answer:
Galina-37 [17]3 years ago
4 0
<span>n = n0(1 - 0.08)^t 
= n0(0.92)^t 

Putting n = n0 / 2: 
1 / 2 = 0.92^t 
t = log(1 / 2) / log(0.92) 
= 8.31 yr.</span><span>
</span>
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3 0
3 years ago
A mother is 1 and 3/4 times as tall as her son. Her son is 3 feet tall. How tall is the mother?
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The mom is 5 feet 3 inches

Step-by-step explanation:

<u>Step 1:  Make an equation</u>

m = 1 3/4 * 3

<u>Step 2:  Solve</u>

m = (4/4+3/4) * 3

m = 7/4 * 3

m = 21/4

m = 5.25

<em>m = 5 feet 3 inches</em>

<em />

Answer:  The mom is 5 feet 3 inches

7 0
3 years ago
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Step-by-step explanation:

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Answer:

1. (-5)

Step-by-step explanation:

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4 0
3 years ago
a car purchased for $34,000 is expected to lose value, or depreciate, at a rate of 6% per year.using x for years and y for the v
Vika [28.1K]

Answer:

y = 34000(1-0.06) ^ t

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Step-by-step explanation:

This problem is solved using a compound interest function.

This function has the following formula:

y = P(1-n) ^ t

Where:

P is the initial price = $ 34,000

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t is the elapsed time

The equation that models this situation is:

y = 34000(1-0.06) ^ t

Now we want to know after how many years the car is worth less than $ 21500.

Then we do y = $ 21,500. and we clear t.

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After 7.40 years it will be worth less than 21500

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3 years ago
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