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
loris [4]
3 years ago
12

49 POINTS!!!!!!!! PLZ HELP!

Mathematics
1 answer:
monitta3 years ago
7 0

Answer:

(a) f⁻¹(x) = 2x - 8

(b) f⁻¹(4) = 0

Step-by-step explanation:

This is usually not too difficult if you write the equation as y = f(x), then swap x and y and solve for y.

... y = (1/2)x + 4 . . . . y = f(x)

... x = (1/2)y + 4 . . . . variables swapped

... x - 4 = (1/2)y . . . . . subtract 4

... 2(x -4) = y . . . . . . multiply by 2

... y = 2x - 8 . . . . . . simplify

... f⁻¹(x) = 2x -8

____

Evaluating this for x=4, we get

... f⁻¹(4) = 2·4 - 8 = 0

You might be interested in
Earl worked 18 hours last week. If he had earned $2.00 an hour more but had worked only 15 hours, he would have earned the same
ruslelena [56]

Answer:

B) $10.00

Step-by-step explanation:

10 × 18 = 180

10 + 2 = 12

12 × 15 = 180

3 0
3 years ago
Read 2 more answers
the taxi fare in new york city is $2.40 for the first 1/2 miles and additional mileage is charged at the rate $2.00 for each add
Licemer1 [7]
You're forgetting to add how many miles did the taxi drove you, without it, this problem doesn't have a solution, you're not including how many miles were drove additionally, as well as how much money you carry in the first place bud sorry
6 0
3 years ago
2x + y =8 and 4x -2y = 6
irakobra [83]

Answer:

x=1.25 and y=-5.5

Step-by-step explanation:

2x+y=-8, 2x=-y-8 or 4x=-2y-16. Plug this value in the second equation, we have - 2y-16-2y=6, y=-5.5. Plugging this in any equation we have, x=1.25

5 0
3 years ago
2Y - 1.7 =3.3 <br><br> HELP !!!!!
bogdanovich [222]

Answer:

2.5

Step-by-step explanation:

Simplifying

2y + -1.7 = 3.3

Reorder the terms:

-1.7 + 2y = 3.3

Solving

-1.7 + 2y = 3.3

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '1.7' to each side of the equation.

-1.7 + 1.7 + 2y = 3.3 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0

0.0 + 2y = 3.3 + 1.7

2y = 3.3 + 1.7

Combine like terms: 3.3 + 1.7 = 5

2y = 5

Divide each side by '2'.

y = 2.5

Simplifying

y = 2.5

3 0
3 years ago
Read 2 more answers
Select the correct answer.
tino4ka555 [31]

Answer:

A . The inequality sign always opens up to the larger number.

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Penny reads 10 pages in 1/4 hour.what is the unit rate for pages per hour?For pages per page? The unit rate is blank hour(s) per
    6·1 answer
  • HELP ASAP 5 STARS, THANKS, 20 POINTS, BRAINLIEST,
    14·2 answers
  • Please tell me this asap..<br><br>y/2 - 1/5 = 2 - y/3​
    15·1 answer
  • The sum of 3 consecutive integers is 120. What is the greatest of these integers? HELP ME IT'S DUE TODAY!!!
    8·1 answer
  • Which equation could represent the relationship shown in the scatter plot?<br><br><br> PLEASE HELP
    12·1 answer
  • If the slope of line p is 1/5 and the slope of line q is -5 then what is true about lines p and q? (assume lines p and q are cop
    11·2 answers
  • At a local fitness center, gym members pay $3 per workout with an annual membership fee of $140. Non-members pay $10 per workout
    6·1 answer
  • On his motorcycle, Eval Knoble (Evil Knievel’s rival) can accelerate from 0 feet per second to 100 feet per second (68 miles per
    10·1 answer
  • Complete the table.<br><br> Original Price Percent of Discount Sale Price<br> $<br> 5% $57
    14·1 answer
  • Simplify the following expression: 7(2x+ 6y)​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!