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
patriot [66]
2 years ago
9

Help help help help thanks lol

Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
5 0
f(x)=x^2-81\\
y=x^2-81\\
x^2=y+81\\
x=\pm \sqrt{y+81}\\
f^{-1}(x)=\pm \sqrt{x+81}\\

f(x)=2x-6\\
y=2x-6\\
2x=y+6\\
x=\dfrac{1}{2}y+3\\
f^{-1}(x)=\dfrac{1}{2}x+3\\
f^{-1}(2)=\dfrac{1}{2}\cdot2+3\\
f^{-1}(2)=1+3\\
f^{-1}(2)=4
You might be interested in
Write the following expression in standard for a + bi<br><br><img src="https://tex.z-dn.net/?f=%5Cfrac%7B6-i%7D%7B1%2Bi%7D" id="
Arte-miy333 [17]

Answer:

5/2-7/2 i or 2.5-3.5i

Step-by-step explanation:

expand the fraction remove the parenthesis and then calculate

3 0
2 years ago
Three times the sum of a number and 17 is at least 22 translate
shutvik [7]
Hi there!
We are given a question that asks us to translate some given information into numerical format, or numbers. We can do that by first finding key words. Such words are sum and at least. Sum indicates addition, while at least indicates a greater than or equal to sign, or ≥. Now that we have found our key info, we can move on.
The question states that 3 times the sum of a number and 17. The 'sum of a number and 17' part can be represented by the expression x + 17, where x is some number. Next, three times means that we need to multiply 3 to the expression x + 17, giving us 3(x + 17). Finally, the question gives us that the whole expression 3(x + 17) is 'at least', or greater than or equal to, 22. Hence, we get the inequality 3(x + 17) ≥ 22, which is also our answer. Hope this has come of assistance to you and have a great day!
7 0
3 years ago
Eloise made a list of some multiples of 8/5 . Write 5 fractions that can be in Eloise list.
Kaylis [27]
16/10
24/15
32/20
40/25
48/30
4 0
3 years ago
(-3,-14) and (0-9)<br> Pls help!!!
andreyandreev [35.5K]

Answer:

<em>y</em> = (5/3)<em>x</em> - 9

Step-by-step explanation:

First, find the slope (rise over run):

m = (-9 - (-14)) / (0 - (-3)) = (-9 + 14) / (0 + 3) = 5/3

Use the point-slope form equation with the given points (-3, -14):

y + 14 = (5/3)(x + 3)

or optionally in slope intercept form:

<em>y</em> = (5/3)<em>x</em> - 9

3 0
2 years ago
FP!<br> what is 50 + 20
meriva
50+20=70

Have a great day:)
4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the value of in e^4? <br> A.0<br> B.1<br> C.2<br> D.4
    15·2 answers
  • A rectangle is 6yards longer than it is wide. Find the dimensions of the rectangle if it’s area is 187 square yards
    7·1 answer
  • Find the area. Will mark brainliest.
    9·1 answer
  • Suppose you roll a blue number cube and a red number cube.
    15·2 answers
  • Can You Please Help With Problem 2.
    10·2 answers
  • The length of a rectangle is 3 inches longer than it is wide. If the 46 inches what are the dimensions of the rectangle
    7·1 answer
  • The distance around the middle of a sphere (the circumference) equals 37.699 in. what is the surface area of the sphere?
    5·1 answer
  • WILL GIVE BRAINIEST PLEASE ONLY ANSWER WITH AN ANSWER
    8·1 answer
  • Which of these functions are linear?<br> Choose all that apply.<br> I need help pleaseeee
    10·1 answer
  • Ralph plotted the points (-4, 1) and (-4,-1) on a coordinate grid. What is the distance,
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!