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
ira [324]
3 years ago
7

The function f(x) varies inversely with x and f(x)=2 when x = 16. What is f(x) when x = 4?

Mathematics
1 answer:
andrew-mc [135]3 years ago
8 0

Answer: The correct answer is:  [D]:  "8" .

Step-by-step explanation:f y varies inversely with x;  then y = k/x ; with "k" being the "constant" in this equation.  

You can find the constant by substituting the values given: x = 16,  f(x) = y = 2 ;

So, f(x) = y = 2  = k/16 ;

→  2 = k / 16 ;

Solve for the constant; "k" ;

Multiply EACH SIDE of the equation by "16"

→  16* (2) = (k / 16) * 16 ;

→  32 = k ;

 ↔  k = 32 ;  

As such, we can write the equation:

y = k/ x ; as:

→  y = 32/ x ;

Since we are given:  "x = 4" ;  Plug in that value; and solve for "y" ;

y = 32/4 = 8 .

y = 8 .

y = f(x) ;

So;  f(x) = 8 ;  which is:  Answer choice:  [D]:  "8" .

You might be interested in
Find the measure of the missing angle.<br> a<br> 66°
yanalaym [24]

Answer:

24°

Step-by-step explanation:

the total angle, made up from both a and 66°, is a mini-square, as you can see. this represents a right angle of 90°

thus, a and 66° combine to make 90°

a + 66° = 90°

subtract 66 from both sides to get a

a = 24°

7 0
2 years ago
What is the surface area of a sphere with radius 2
Gelneren [198K]

Answer:

A

Step-by-step explanation:

The surface area (A) of a sphere is calculated as

A = 4πr² ← r is the radius

here r = 2, hence

A = 4π × 2² = 4π × 4 = 16π units² → A

3 0
3 years ago
What is percent probability
svetlana [45]
The probability would be 9/12 or 3/4 in the lowest form
7 0
3 years ago
Johnny has graded 20% of his 150 students papers how many papers does he still need to finish grading ?
LiRa [457]
The correct answer is 120 papers.
4 0
3 years ago
Read 2 more answers
If f(x) =4x+12 is graphed on a coordinate plate what is the y intwrcept of the graph
Crank
In y=mx±b of slope-intercept form, the b is the y-intercept either positive or negative.

y=4x+12, in this case, 12 is your y-intercept!!

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey
6 0
3 years ago
Other questions:
  • PLEASE HELP PLEASE PLEASE The graph below plots a function f(x):
    14·1 answer
  • Three students had $12.00 total and went to a snack bar where their bill was $8.57. They want to share equally the money that is
    6·1 answer
  • Evaluate C(5, 2). 10 20 30
    15·1 answer
  • Jennifer has a bag of chips that contains 2 red chips and 1 black chips. If she also has a fair die, what is the probability tha
    8·2 answers
  • Write these as a single term.<br> 6a x 6b =
    8·2 answers
  • A can of chicken stock measures 3.5 inches in diameter and 5 inches tall. What is the volume of the can? Use 3.14 for pi. Round
    6·1 answer
  • What is the rate of Change of the line through (1,-3) and (0,-1)
    10·1 answer
  • A newspaper and magazine cost 220 together the newspaper cost 140 less than the magazine find the cost of each
    9·1 answer
  • 100 points its most of my points PLS HELP ME IM LOSING ALOT OF POINTS
    15·1 answer
  • Segment AB has point A located at (4,2). If the distance from A to B is 3 units, which of the following could be used to calcula
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!