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
andreyandreev [35.5K]
3 years ago
15

If f(x) = 6x – 4, what is f(x) when x = 82

Mathematics
2 answers:
Fittoniya [83]3 years ago
7 0
Answer : 488
Substitute x=82 into the equation 6x-4

sleet_krkn [62]3 years ago
4 0

Answer:

f(x) = 488

Step-by-step explanation:

first you plug in 82 in for x then you multiply by 6 times 82 and you get 492 then you subtract 4 and you get 488

You might be interested in
The weight of a radioactive isotope was 96 grams at the start of an experiment. After one hour, the weight of the isotope was ha
zimovet [89]
The starting weight of the radioactive isotope = 96 grams

Weight after one hour is half of the starting weight. So the weight of the radioactive isotope after 1 hour = 48 grams

After 2 hours the weight is half as compared to the weight after previous hour. So weight after 2 hours = 24 grams.

This means, after every hour the weight is being halved. The half life of radioactive isotope is one hour.

Since after every hour, the weight is being halved, the weight of the isotope can be modeled by an exponential equation.

So,

Initial Weight = W₁ = 96
Change factor = 1/2 = 0.5

The general equation of the sequence will be:

\\  \\ W_{t}=96(0.5)^{t}

Here t represents the number of hours. Using various values of t we can find the weight of the radioactive isotope at that time.

We can plot the sequence using the above equation. The graph is attached below.

3 0
3 years ago
Read 2 more answers
How many yards has a mile
stiv31 [10]
He's correct 
there is exactly 1760 yards in a mile

3 0
3 years ago
Given a right triangle with legs a, b and hypotenuse c, solve for a if b= 20 and c= 29
pantera1 [17]

Answer:

C) 21

Step-by-step explanation:

a² + 20² = 29²       Use Pythagorean Theorem to solve for a

a² + 400 = 841       Solve for the exponents

     - 400 - 400      Subtract 400 from both sides

a² = 441                  Take the square root of both sides

a = 21

8 0
3 years ago
Read 2 more answers
Explain why 0.2 and 0.02 are not equivalent.
Varvara68 [4.7K]
0.2 = 2/10 = 1/5 but 0.02 = 2/100 = 1/50 so 1/5 > 1/50 :D 
6 0
3 years ago
Read 2 more answers
What is the equation of a parabola with a focus (-2,4) and directrix y = 0?
Ronch [10]
The general form of a parabola  when using the focus and directrix is:
(x - h)² = 4p(y - k) where (h, k) is the vertex of the parabola and 'p' is distance between vertex and the focus.  We use this form due to the fact we can see the parabola will open up based on the directrix being below the focus.  Remember that the parabola will hug the focus and run away from the directrix.  The formula would be slightly different if the parabola was opening either left or right.

Given a focus of (-2,4) and a directrix of y = 0, we can assume the vertex of the parabola is exactly half way in between the focus and the directrix.  The focus and vertex with be stacked one above the other, therefore the vertex will be (-2, 2) and the value of 'p' will be 2.  We can now write the equation of the parabola:
(x + 2)² = 4(2)(y - 2)
(x + 2)² = 8(y - 2)  Now you can solve this equation for y if you prefer solving for 'y' in terms of 'x'
5 0
3 years ago
Other questions:
  • The sum of two numbers are 62 and the difference is 18. Wjat are the numbers
    12·1 answer
  • Two students measure their reaction times by seeing how many seconds it takes one of them to catch a yard stick that the other d
    9·1 answer
  • Which of the coordinates listed below could represent a point found on the line 3x?
    6·1 answer
  • Someone please help me
    7·1 answer
  • 13. If 6 times the 6th term of an A.P. is equal to
    12·1 answer
  • Please help me with this
    11·2 answers
  • What is the value of the expression below when x=1?<br> 4x² + 5
    8·2 answers
  • Please help i mark brainiliest​
    9·1 answer
  • Answer the 3rd one, please<br> just tell me where to draw the line
    7·1 answer
  • X*[y+(-6)]=[13*(-19)]+[13*z]
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!