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Helga [31]
3 years ago
11

Help!!!!!!!

Mathematics
1 answer:
Step2247 [10]3 years ago
4 0

Question 1 is either B or D

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A certain forest covers an area of 4600km. Suppose that each year this area decreases by 7.75%. What will the area be after 13 y
wolverine [178]

Answer:

1679.60\ km^2

Step-by-step explanation:

-We can use the exponential decay function to estimate the size after 13 years:

P_t=P_oe^{-rt}

Where:

P_t is the size after t years, t is the time, r is the rate of decay and P_o the original size.

#We substitute and calculate as:

P_t=P_oe^{-rt}\\\\=4600e^{-13\times 0.0775}\\\\=1679.60

Hence, the forest covers 1679.60\ km^2 after 13 years.

4 0
3 years ago
Given f(x) = 3 and g(x) = 5x + 7, find (f + g)(-8).
levacccp [35]

Answer:

-30

Step-by-step explanation:

f(x) = 3 so f(-8) = 3;

g(x) = 5x + 7, so g(-8) = 5(-8) + 7 = -33

Then (f + g)(-8) = 3 - 33 = -30

This is the sum of two functions both evaluated at x = -8.

4 0
3 years ago
What was your speed if you drove 325 miles in 5 1/4 hours?
liraira [26]

Answer:

61.9047619048

Step-by-step explanation:

325/5.25= 61.9047619048

4 0
3 years ago
Read 2 more answers
5/8 of the staff are male 5/12 of the staff works part time at the aquarium what is the fraction of the staff being female
Goryan [66]
I believe the answer is 3/8. The whole portion of employees, which is translated as 8/8 is deducted by 5/8, which is the population of male employees.
7 0
3 years ago
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A piece of art is in the shape of an equilateral triangle with sides of 25in. Find the area of the piece of art. Round your answ
mojhsa [17]
A=\sqrt{3}/4 * side length^2
A=270.663
The answer is B.
6 0
3 years ago
Read 2 more answers
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