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
ololo11 [35]
3 years ago
12

What is the value of f^-1(21)

Mathematics
1 answer:
elixir [45]3 years ago
3 0

Given that f(x) = 2x + 11:  if f(x) = y = 21, then 21 = 2x + 11, and so 10=2x and x=5.

Thus, f(5) = 2(5) + 11 = 21; (5,21) is a point on the graph of f(x).

If that is so (which it is), then (21,5) is a point on the graph of the inverse function, and 5 is the appropriate output value.

You might be interested in
A survey question revealed that at a particular college 87 percent of students worked at least sometime during their undergradua
Elanso [62]

Answer:

The correct option is A. 198 degrees

Step-by-step explanation:

Consider the provided information.

87 percent of students worked at least sometime during their undergraduate career and 13 percent did not work at all.

Another question showed that 32 percent of the students worked throughout their undergraduate career.

87 percent  of the students worked at least sometime during the college. Out of them 32% worked throughout the college.

Therefore, the students who worked sometime during their undergraduate career, but not throughout are:

(87-32)% = 55% .

As we know the angle measure in circle  is 360 degrees.

55% of 360° is:

\frac{55}{100}\times360= 198

Hence, the measure of central angle would be 198 degrees

Therefore, the correct option is A. 198 degrees

8 0
4 years ago
You ask a neighbor to water a sickly plant while you are on vacation. without water the plant will die with probability 0.8. wit
atroni [7]
The correct answer should be 20% because u were 80% certain he would remember so that means ur 20% certain he would forget
4 0
3 years ago
Caroline’s hair is 7 inches long and grows about ⅕ inch each month. Trinity’s hair is 10 inches long and grows about 1/10 inch e
sashaice [31]
B
I know this right away because notice how it says “EACH month.” When it includes each you have to have an “x” beside the number to make it each month. If you don’t have an x it will just be “a single month.”

Sorry if that’s confusing I’m bad at explaining but have a nice day:))
7 0
3 years ago
Write the prime factorization of the number. 18,234
shusha [124]

Answer:

18234=2\times 3\times 3\times 1013

Step-by-step explanation:

We are given that a number 18234

We have to find the prime factorization of the number

Prime factorization : The number written  is in  the product of prime numbers is called prime factorization.

In order to find the prime factorization we will find the factors of given number

18234=2\times 3\times 3\times 1013

Hence, the prime factorization of 18234=2\times 3\times 3\times 1013

3 0
3 years ago
Please help !!! I’ll mark you as brainliest if correct
kozerog [31]

Answer:

10 seconds

Step-by-step explanation:

we are given the height (s) which is 1600ft. and the formula—where t is time in seconds— t= 1/4\sqrt{s}, so we can plug 1600ft in for s and solve:

t= 1/4\sqrt{1600}

t= 1/4(40)

t= 10 seconds

5 0
3 years ago
Other questions:
  • At a snack stand, drinks cost $1.50. Write the expression that could be used to find the total cost in dollars of d drinks?
    5·2 answers
  • Explain how an estimate help you to place the decimal point when multiplying 3.9x5.3?
    11·1 answer
  • Can someone please help me its a short quiz
    5·1 answer
  • A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec
    8·1 answer
  • Think about the expression (x-8)(x+4)
    7·1 answer
  • Plzzzzz helpp j + 9 - 3 < 8
    10·1 answer
  • Is this a function or not a function?
    13·1 answer
  • Match each trig function to a ratio. tan(A)=
    15·1 answer
  • ∠A and \angle B∠B are supplementary angles. If m\angle A=(7x+24)^{\circ}∠A=(7x+24) ∘ and m\angle B=(7x-26)^{\circ}∠B=(7x−26) ∘ ,
    12·1 answer
  • This is so in the morning & i need these answers!! :\
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!