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valentinak56 [21]
2 years ago
10

Inverse fraction of f(x)=2x+1

Mathematics
1 answer:
Akimi4 [234]2 years ago
6 0

Answer:

f^{-1}(x) = \frac{x-1}{2}

Step-by-step explanation:

let f(x) = y, then y = 2x + 1

rearrange, making x the subject

subtract 1 from both sides

y - 1 = 2x ( divide both sides by 2 )

x = \frac{y-1}{2}

change y back into terms of x

f^{-1}(x) = \frac{x-1}{2}


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The temperature was -3° last night it is now -4° see what was the change in temperature was-3° C. It is -4° C. What was the chan
raketka [301]

Answer:

The temp got colder by -1

Step-by-step explanation:

The difference of -3 to -4

-4 + -3 = -1

7 0
3 years ago
Find two consecutive integers such that one fifth of the first less one-ninth of the second is 3. Pls answer.​
mart [117]

Answer:

35 and 36

Step-by-step explanation:

To solve this problem, we must interpret it line by line;

  • We are dealing with consecutive integers; these are integers with a difference of 1 between them.

   let the first number = x

               second number  = x + 1

  • one - fifth of first;

             \frac{1}{5}x

  •   one - ninth of the second;

            \frac{1}{9}(x + 1)

for the "less" ;

         \frac{1}{5}x -  \frac{1}{9}(x + 1) = 3

Multiply through by 45

       45(\frac{1}{5}x) - (45) \frac{1}{9}(x + 1) = 3 x 45

           9x - 5(x + 1) = 135

           9x - 5x -5 = 135

             4x = 135 + 5

              4x = 140

                x = 35

Now, x+1  = 35 + 1 = 36

The consecutive integers are 35 and 36

4 0
3 years ago
A friend lends you $410, which you agree to repay with 9% interest. How much will you have to repay?
Brrunno [24]

Answer:

I believe the answer is $409.91

Step-by-step explanation:

8 0
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-5/6+ -5/6 please help me
ehidna [41]
(-5/6)+(-5/6) have the same denominator (number at bottom of fraction), so all you have to do is add the numerator(top number). So -5 +-5 =-10 . Now you have -10/6, which simplifies to -5/3. 
Hope this helps :)
5 0
3 years ago
Read 2 more answers
Which shows 34,867 rounded to the nearest hundred? O A 34,900 . B. 34.800 C. 34 500 D. 34.000​
worty [1.4K]

Answer:

A. 34,900

Good Luck!!

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ 

7 0
2 years ago
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