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
Andru [333]
2 years ago
5

What is the inverse of the function f(x) = 4x + 8?

Mathematics
1 answer:
sp2606 [1]2 years ago
6 0

eplace f(x) with y

swtich x and y

solve for y

replace y with f⁻¹(x)

f(x)=4x+8

y=4x+8

x=4y+8

x-8=4y

1/4x-2=y

y=1/4x-2

f⁻¹(x)=1/4x-2

none of the above

You might be interested in
The standard form of the number represented by the Roman numeral MXCIV is
Assoli18 [71]

Answer:

1094

Step-by-step explanation:

4 0
2 years ago
A music buff wants to estimate the percentage of students at a midwestern university who believe that elvis is still alive. how
gulaghasi [49]
Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50

so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)

The margin of error for population proportion is calculated as:

E=z* \sqrt{ \frac{p(1-p)}{n} }  \\  \\ 
 \frac{E}{z} = \sqrt{ \frac{p(1-p)}{n} }  \\  \\ 
( \frac{E}{z} )^{2}= \frac{p(1-p)}{n} \\  \\ 
n= p(1-p)* (\frac{z}{E})^{2}  \\  \\ 
n=271

This means 271 students should be included in the sample
5 0
3 years ago
123,10kg to the nearest kg​
DENIUS [597]

Answer:123,000

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Genius question: A long level railway bridge passes over a railroad track, which is 100 feet below it and at right angles to it.
nataly862011 [7]

Answer: <u>110 feet per second</u>

Step-by-step explanation:

In this problem we will assume that the car at 45 miles per hour is moving into the x direction with a high of 100 feet, and the train is going in the y direction, so they trajectories will made an angle of 90º.

Now we can calculate the speed of the trains in feet per second so:

S1=\frac{45*5280}{3600}=66

S2=\frac{60*5280}{3600}=88

So we can make a right triangle with sides 66 and 88 and the hypotenuse will be the rate that the trains will separate per second so:

h=\sqrt{66^{2} +88^{2} } =\sqrt{4356+7744}

h=\sqrt{12100}=110

Is important to have in mind that the initial high is not going to change how fast the trains will separate, however, if we are going to calculate the distance we should have it in the calculations.

7 0
3 years ago
A newsboy has $2.65, consisting of nickels, dimes and quarters.
liq [111]
Buvhgcknhuyvhvfxvhjbcg
4 0
3 years ago
Read 2 more answers
Other questions:
  • Isabelle bought a new mountain bike for $1,149.79. She will finish paying for the bike after 6 months. Each month, she will pay
    15·2 answers
  • jake plans to use a ramp to make it easier to move a piano out of the back of his truck the back of the truck is 33 inches tall
    7·2 answers
  • Find the circumference with the given radius.round to the nerest tenth.use 3.14 π r = 7cm​
    15·1 answer
  • Find the missing side link when the area is 171 km².
    7·1 answer
  • Subtract<br><br> X2 + 8x +9<br> - (x2 + 4x)
    11·1 answer
  • Need help ASAP:)))))))))))))<br>Pls show ur work!<br>1.2x + 7 - 5x <br><br>2.2c - 3 = 2(6 - c) + 7c
    6·2 answers
  • Consider the function f(x) = x2 + 2x – 15. What are the x-intercepts of the function?
    13·1 answer
  • Determine the slope of the line that contains the given points.
    7·2 answers
  • What times 5/8 equals 1
    8·2 answers
  • How many solutions does the equation have? |h| − 8 = 4<br> no solution, one solution, two solutions
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!