1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masja [62]
3 years ago
14

Find the inverse of the function. f(x) = 7x + 8

Mathematics
1 answer:
lana66690 [7]3 years ago
4 0

Answer:

\frac{x-8}{7}

Step-by-step explanation:

A way to find the inverse function is to swap the x and y (f(x)) in the equation.

y = 7x + 8\\x = 7y + 8\\x-8 = 7y\\y = \frac{x-8}{7}

We can check that it is an inverse function by using a property of inverse functions:

f(g(x)) = x

If we plug in the f(x) function into the variable x of the inverse function, we should end up with x

y = \frac{(7x + 8) - 8}{7}\\y = \frac{7x}{7} \\y = x\\

It checks out!

You might be interested in
Describe a pattern you notice when adding the sums of fractions with even denominators as opposed to those with odd denominators
GuDViN [60]
When adding fractions with even denominators, you will not get a whole number, there will be a 1/2. When adding fractions with odd denominators there will be a whole number.
8 0
3 years ago
Read 2 more answers
Need some help on vertical adjacent complementary angles (algebraic)
dusya [7]

Step-by-step explanation:

(2c + 8) + (6c - 6) = 90 \\ 8c + 2 = 90 \\ 8c = 88 \\ c =  \frac{88}{8}  = 11

6 0
3 years ago
Read 2 more answers
Help please someone i need help!!
ycow [4]

Answer:

c= 7

Step-by-step explanation:

6 0
2 years ago
It takes 2 1/3 hours to paint a wall. How long will it take to paint 7 walls at this rate?
boyakko [2]

Answer:

Hi! The correct answer is 49/2 as an improper fraction and 24 1/2 in mixed number form!

Step-by-step explanation:

<em><u>~If it takes 2 and 1/3 to paint 1 wall then that's the unit rate. Multiply the unit rate by the number of total walls and that's your answer~</u></em>

7 0
3 years ago
suppose a triangle has two sides of length 2 and 3 and that the angle between these two sides is 60. what is the length of the t
arlik [135]

Answer:

  √7 ≈ 2.646

Step-by-step explanation:

The law of cosines is applicable. It tells you ...

  c² = a² + b² - 2ab·cos(C) . . . . . where a, b, c are triangle side lengths, and angle C is opposite side c.

Filling in the given information, you have ...

  c² = 2² + 3² - 2·2·3·cos(60°) = 4 + 9 - 12·(1/2) = 7

  c = √7 ≈ 2.646

The length of the third side is √7, about 2.646 units.

3 0
3 years ago
Read 2 more answers
Other questions:
  • 39/40 into a percent
    10·1 answer
  • What is the value of F with an exponent of 2 + 8 if f= -7
    8·1 answer
  • PLZ HELP! QUICK! WILL MARK BRAINLIEST!!! 20 POINTS!!! A portion of the Quadratic Formula proof is shown. Fill in the missing sta
    5·1 answer
  • If aₙ = 3(3)ⁿ⁻¹ , what is S₃?<br><br> 12<br><br> 27<br><br> 9<br><br> 39
    8·2 answers
  • A study is conducted to examine the correlation between Training Time and the Error Rate of employees. If the correlation coeffi
    6·1 answer
  • Help pls i give brainliest
    9·1 answer
  • Help!!!!!! algebra 1
    12·2 answers
  • The nearest star to the earth is<br><img src="https://tex.z-dn.net/?f=%20%7B2%20%5Ctimes%20%20%2B%204%7D%5E%7B2%7D%20%20%3D%20%2
    5·1 answer
  • Solve the formula Ax + By = C for A
    13·1 answer
  • If a magic wallet gives me 20 cents every 3 minutes how much money do I earn after an hour​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!