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Mandarinka [93]
3 years ago
6

Let f(x)=81+3e−0.7x . What is the value of f(−1) ? Round the answer to the nearest hundredth. Enter your answer in the box.

Mathematics
2 answers:
skad [1K]3 years ago
8 0

Answer:

 f(-1)=89.85      

Step-by-step explanation:

Given : Function - f(x)=81+3e-0.7x      

To find : f(-1) nearest to hundredth

Solution :

step 1- Write the function

f(x)=81+3e-0.7x  

Step 2- Put the value of x=-1

f(-1)=81+3e-0.7(-1)  

Step 3- Solve

f(-1)=81+3e+0.7  

f(-1)=81.7+3e  

Value of e is a Euler number e=2.718

f(-1)=81.7+3(2.718)  

f(-1)=81.7+8.154  

f(-1)= 89.854

Round to nearest hundredth f(-1)=89.85

horrorfan [7]3 years ago
6 0
F(-1)=81+3e-.7(-1)

enter into scientific/ graphing calculator
f(-1)=89.85
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Answer:

D.) 15 years

Step-by-step explanation:

7.5% of 550 rabbits would be 41.25

if you are increasing till you get over 1,000

it would take 10.9 almost 11 years to get to 1,000

meaning it would be 15 years when your over 1,000 giving you 1,168.75

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I need to a paint a spherical storage tank in the pool. it has a radius of 8 feet and the paint cans i brought will cover 75 squ
Alexxandr [17]
<h3>Answer:   11 cans</h3>

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Explanation:

SA = surface area of the sphere

SA = 4*pi*r^2

SA = 4*pi*8^2

SA = 804.247719

The surface area is roughly 804.247719 sq ft.

I used the calculator's stored version of pi to get the most accuracy possible.

Since 1 paint can covers 75 sq ft, divide that surface area over 75 to find out how many cans you need.

804.247719/75 = 10.72330292

Round up to the nearest integer to get 11

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April and Amy have a combination age oh 53.Amy is 9 years younger than April.what are April and Amy ages.
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If the total age of both April and Amy are 53

And Amy is 9 years younger than april.

Then to solve for Amy's age you would subtract 9 from 53 and divide by 2

which equals 22

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5 0
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Which statement is true about the graphed function?
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The true statement, regarding the signal of the graphed function, is given by:

F(x) > 0 over the interval (–∞, –4).

<h3>When a function is positive and when it is negative?</h3>

Looking at it's graph, we have that:

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Researching this problem on the internet and looking at the graph of the function, the function is negative for <u>all values to the right of x = -4</u>,  and positive to the left, hence the correct statement is given by:

F(x) > 0 over the interval (–∞, –4).

More can be learned about the signal of a function at brainly.com/question/25638609

#SPJ1

3 0
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