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lana [24]
3 years ago
7

What is the inverse of function f f(x)=√x +7

Mathematics
1 answer:
taurus [48]3 years ago
4 0

Answer: f⁻¹(x)=(x-7)²

Step-by-step explanation:

To find the inverse function, we want to switch the y with the x and vice versa. Then we solve for y.

y=\sqrt{x} +7        [switch y with x and x with y]

x=\sqrt{y} +7        [subtract both sides by 7]

x-7=\sqrt{y}        [square both sides]

y=(x-7)^2

Now, we know that f⁻¹(x)=(x-7)².

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In science class, a student is measuring the temperature of a solution in science experiment. The solution
Radda [10]

Answer:

-11.8

Step-by-step explanation:

<u>Given:</u>

-3.4 to 12.4        increased  (difference = 15.8)

12.4 to 20.4      decreased (difference = 8)

20.4 to 3.2        increased  (difference = 17.2)

<u>To find:</u>

Final temperature.

Solution:

As we noticed, this is a pattern of increase, decrease, increase... (and so on and so forth). From this alone, we have gotten the clue that the temperature is going to decrease. But here is the thing, How far will it decrease?

Use the difference of the starting result to find the ending result.

3.2 - 15

= -11.8

Therefore, the final temperature is -11.8.

6 0
2 years ago
A farmer wants to use 200 feet of fencing for a chicken pen. He wants the width of the pen to be 20 feet. What is the length of
Aneli [31]
The length should be 80 feet.

This is because the width is 20, since there are two sides for the width in a pen, we have to add 20+20. This would equal 40. Then we need to subtract 40 from 200. 200-40 would be 160. Then since there are two sides for the length, we need to split that in half. 160÷2 would be 80. To double check, you can do 80+80 and that would still be 160. So the length of one side would be 80. But of course, this whole thing would only be right if the pen has four sides(but since i have seen many chicken pens, there were all rectangular). I hope this helped! :)
7 0
3 years ago
WILL MARK BRAINLIEST!!!! PLZ HELP!!!! Using the two-way table, what percentage of the students that like to travel out of state
grigory [225]

Answer:

  41%

Step-by-step explanation:

The table shows that 36 of the 88 students that like traveling out of state do not like camping. That percentage is ...

  36/88 × 100% ≈ 41%

7 0
3 years ago
Explain how bacteria are both helpful and harmful to out bodies ​
Pavel [41]

Answer:

Step-by-step explanation:

Bacteria is helpful because it helps protect the cells in your intestines. Its, harmful because itI can cause a disease in your lungs.

Hope this helps!

8 0
3 years ago
allen has a debt of 500$.He owes equal amounts to 10 different people. Express his debt to one person as a negative number.
SOVA2 [1]
-50 because if he owes 10 different people the same amount it would be -50 because he owes them money
4 0
3 years ago
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