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
Svetradugi [14.3K]
2 years ago
14

Let f(x) = x2 - 81. Find f-1(x).

Mathematics
1 answer:
dusya [7]2 years ago
7 0
This is equivalent to finding a function g in which g(x^2-81)=x.

We simply reverse the actions of the initial function by adding 81 back and taking the square root.  Therefore, f^{-1}(x)=\sqrt{x+81}.
You might be interested in
HELP , TIMES ALMOST UP!!!!!!
solong [7]

Answer:

0.8660254 or √3/2

Step-by-step explanation:

6 0
2 years ago
angelA and angelB are complementary angles. If m angel = ( x-23)° and m angel B = (2x + 29°) then find the measure of angle B.​
alina1380 [7]

Answer:

The measure of angle B is 29°.

8 0
2 years ago
Determine the quotient: (22.8 × 10–3) ÷ (5.7 × 10–6)
lana66690 [7]

Answer:

0.399

Step-by-step explanation:

The key to doing this problem properly lies in knowing and following order of operations rules.

Here we must perform mult. and div.  before  addition and subtr., but even before that we must do all work enclosed in parentheses first.

(22.8 × 10–3) is evaluated by doing the mult. first, and then subtracting 3:

(228-3) = 225

and

(5.7 × 10–6) is evaluated by doing the mult. first, then subtracting 6:

(570-6) = 564.

Finally, we divide 225 by 564, obtaining 0.399 (after rounding off to three decimal places).


8 0
3 years ago
anonymous 2 years ago If you were to solve the following system by substitution, what would be the best variable to solve for an
Ainat [17]
I'm sorry that I'm not in calculus, but hopefully I can help.
Personally, I would choose: D.) x; in the second equation ;
because it has easier numbers to figure out, you'll get it eventually...
7 0
3 years ago
Pam typed 2.5 pages in 15 minutes. At that rate, how many minutes will it take her to type 23 pages?
NeX [460]
In the given question, it is already mentioned that Pam takes 15 minutes to type 2.5 pages. this information should be used as the main information for reaching the desired answer.
Pam typed 2.5 pages in = 15 minutes
Then time taken by Pam to type 23 pages = (15/2.5) * 23
                                                                     = 345/2.5
                                                                     = 3450/25
                                                                    = 138
So Pam will take 138 minutes to type 23 pages
3 0
3 years ago
Read 2 more answers
Other questions:
  • 1)When adding two negative numbers, _________ the absolute value of the numbers and keep the negative sign.
    7·2 answers
  • I Need this ASAP .Triangle PQR is transformed to similar triangle P'Q'R'.What is the scale factor of dilation?
    12·2 answers
  • Working together, it takes 2 computers 12 minutes to send out emails. If it takes the slower 30 minutes to the job on its own, h
    7·1 answer
  • The greater the force applied to an object, the _____ the change in speed or direction of the object.
    12·1 answer
  • Can someone help? I’m really stuck!
    10·1 answer
  • A Verizon salesman sold $5,750 in sales last week. He made $230 in commission. What percent commission did he make?
    15·1 answer
  • Which of these is a safe practice when working with horses?
    10·1 answer
  • A cyclist rides 14 miles in 47 minutes.<br><br>What is the speed of the cyclist in miles per hour
    14·1 answer
  • Determine the mean, median, and mode for the following data sets. Identify any
    8·1 answer
  • If
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!