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
LiRa [457]
2 years ago
9

If f(x) = 2x, then f -(x) = Please help

Mathematics
1 answer:
Sonja [21]2 years ago
5 0

Answer:

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

Step-by-step explanation:

Given

f(x) = 2x

Required:

Find f^{-1}(x)

f(x) = 2x

Replace f(x) with y

y = 2x

Swap both variables

x = 2y

2y = x

Make y the subject

y= \frac{1}{2}x

Replace y with f-1(x)

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

You might be interested in
Write a fraction that has
Nuetrik [128]

Answer:

3/6 and 1/2

Step-by-step explanation:

If you divide each side of the fraction by 2 it will give you 1/2.

6 0
2 years ago
The ratio of pencils to erasers is 4:1. If there are 20 pencils, how many erasers are there.
Leokris [45]

Answer: 5 Erasers

Step-by-step explanation: It's quite simple, really. You divide 20 by 4, (the number of pencils and the ratio number) and then you multiply whatever the quotient was by the ratio number for erasers.

3 0
2 years ago
No links, will be reported
kirza4 [7]

Answer:

(1,0)

Step-by-step explanation:

This is because a system of equations is when two lines cross to form a point that they share. (1,0) is the point where the two lines cross/intersect.

6 0
2 years ago
Read 2 more answers
Explain how knowing that 5/8 = 0.625 helps you write the decimal for 4 5/8
tatyana61 [14]
When writing a decimal, the numbers to the left of the decimal are whole numbers greater then or equal to 1. The numbers to the right of the decimal are numbers less then 1.

if u know 5/8 = 0.625, then 4 5/8 = 4.625
4 0
3 years ago
John and Ellen bought a big pizza. Ellen are 2/4 of the pizza and John ate 1/3 of pizza. How much did they eat all together? How
Step2247 [10]

Answer:

<em>Pizza eaten together: 5/6,</em>

<em>Pizza left over: 1/6</em>

Step-by-step explanation:

~ If Ellen ate 2/4th of the pizza and John ate 1/3 of the pizza, provided that the pizza counts as a whole ( 1 )... ~

1. Let us simplify 2/4th to be ⇒ 1/2, through simple algebra

2. To see how much they ate together we would neglect that the pizza counts as a whole but simply add 1/2 by 1/3rd.

3. Through simple algebra: 1/2 + 1/3 = 3/6 + 2/6 = <em>Pizza eaten together: 5/6</em>

4. Now to find out how much pizza was left over, we would need the fact that a pizza ⇒ 1 whole. It would be that 1 - 1/2 - 1/3 ⇒ Pizza left over, through the <em>Partition Postulate. </em>In fact, the pizza left over would simply be 1 whole - the pizza eaten together ( 5/6 ).

5. Through algebra: 1 - 1/2 - 1/3 = 1 - 5/6 = <em>Pizza left over: 1/6</em>

3 0
3 years ago
Read 2 more answers
Other questions:
  • mark went to two stores to buy a shirt,pants,and shoes. he wants to know which store has the better deal. ( item:shirts $23.89,p
    13·1 answer
  • plant A is 18 inches tall after one week 36 inches tall after two weeks 56 inches tall after three weeks plant B is 18 inches ta
    15·1 answer
  • Smart enough to answer this question? Gracie, Mary, and Nancy each have a small collection of seashells. Gracie has 5 more than
    7·2 answers
  • Marco has a collection of 437 bottles. Each month he buys 32 bottles .
    7·1 answer
  • Bar Model<br>Math show me 8÷2=4​
    7·1 answer
  • Given the equation Y -4 equals three force X +8 in point slope form, identify the equation of the same line in standard form
    8·1 answer
  • write the equation of the line that passes through the points (8, -1) and (2,-5) in standard form, given that the point- slope f
    14·1 answer
  • In a school, 50% of students are younger of students younger than 10, 1/2 are 10 years old and 1/10 are older than 10 but younge
    9·1 answer
  • .Triangle ABC is right angled at B,  AB= 8 cm, BC = 15 cm, find AC​
    8·1 answer
  • A right triangle has side 10 and hypotenuse 26. Use the Pythagorean Theorem
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!