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
jeka57 [31]
2 years ago
13

Help!!! The graph represents (x , y)- pairs that make the equation y = 2x true?

Mathematics
1 answer:
neonofarm [45]2 years ago
3 0
To figure it out u plug in ur x value then multiply it by 2 to get ur y value. So if u had a value of 1 for ur x value ur y value would be 2
You might be interested in
SEE ATTACHED
fenix001 [56]
To me personally, the first bit f(g(x)) is easy and the domain is tricky. Let's try explain this.

A function takes an input number and returns an output number depending on the function. Look at f(x) = x+3, if we let the input number be 2 then we say that f(2) = 5. We could do f(π) to give us π+3 or even f(x²) to give us x² +3. The trick is to substitute the input into the function equation.

You have been asked to find f(g(x)). You know f(x) = \frac{1+x}{1-x}. Putting numbers in at this point would be easy (try work out f(2), you'll do it really quick) but you have to put in g(x).

f(g(x)) = \frac{1+g(x)}{1-g(x)}
we also know that g(x) = \frac{x}{1-x} so we can say that
f(g(x)) = \frac{1+ \frac{x}{1-x} }{1- \frac{x}{1-x} } and that is f(g(x)) but the question requires that we simplify it so
\frac{1+ \frac{x}{1-x} }{1- \frac{x}{1-x} }  =  \frac{ \frac{1-x}{1-x} +  \frac{x}{1-x} }{ \frac{1-x}{1-x} - \frac{x}{1-x} } =  \frac{ \frac{1}{1-x} }{ \frac{1-2x}{1-x} } =  \frac{1}{1-2x}

f(g(x)) = \frac{1}{1-2x}

Now for the tricky bit (for me, at least). The domain is the full set of values that you can 'put in to' the function and still get a real value out. So how do we work out what numbers 'break' the function? I like to use the fact that DIVIDING BY ZERO IS IMPOSSIBLE. What value of x can we put into the function to make it so the function is being divided by 0? i.e. 1-2x = 0 solve that and you have a value of x that isn't part of the domain.

This means the domain is all real numbers EXCEPT the solution to that equation. (Because if we put that value into f(g(x)) it's impossible to get a value out.)

[I know this was a lot to read, if you have any questions or don't get anything feel free to message me or leave a comment.]

5 0
3 years ago
Let X be a normal random variable with mean 40 and standard deviation 2. Find P(X < 28).
Vikki [24]

Answer:

0

Step-by-step explanation:

Given :

Mean = 40 ; Standard deviation = 2

P(x < 28)

Obtain the Zscore :

Z = (x - mean) / standard deviation

P(Z < (28 - 40) / 2))

Z = (28 - 40) / 2

Z = - 12 / 2

Z = - 6

P(Z < - 6) = 0.000000

5 0
3 years ago
What value of x makes this true 1.5x=120?
Debora [2.8K]

Answer: 80

Step-by-step explanation:

x.3/2 = 120

x = 120.2/3

x=80

5 0
3 years ago
Read 2 more answers
Find x.<br> A. 2<br> B. 1<br> C. 1.6<br> D. 0.9
Brilliant_brown [7]

8x - 1 = 3x + 9 (☆ Corresponding Angle)

or, 5x = 10

or, x = 10/5

★ x = 2

This is a Right answer....

I hope you understand....

Mark me as brainliest....

Thanks...

5 0
3 years ago
Read 2 more answers
Powers of products and quotients. simplify (7y^4)^2
Semenov [28]
The answer simplified is 49y^8
5 0
3 years ago
Other questions:
  • Please Help!!!! I Give Thanks!!!!
    10·1 answer
  • If leslie moves $10,000 of her money into an account that pays 8 percent compounded annually for 5 year(s), the amount of money
    12·1 answer
  • There are 5 teen age boys in the slack family. the boys drink 1 and 2 thirds of milk each day. at this rate, how many gallons of
    14·1 answer
  • What are all points between two given points, including the two points? A) angle B) line segment C) parallel lines D) perpendicu
    13·1 answer
  • Which solid shapes have both flat and curved surfaces?
    14·1 answer
  • The temperature at 3:00pm was 15 degrees. At midnight the temperature was -2 degrees. What is the difference between those two t
    15·1 answer
  • A farmer has 336 feet of fencing to enclose 2 adjacent rectangular pig pens sharing a common side. What dimensions should be use
    10·1 answer
  • Find cos θ given that cos 2θ = 5/6 and 0 ≤ θ &lt; π/2. Give an exact answer
    11·1 answer
  • Un conejo vio seis elefantes mientras se dirigía al río. Cada elefante vio dos monos que se dirigían hacia el río. Cada mono sos
    8·1 answer
  • Work out the gradient of the straight line that passes through (2,6) and (6,12)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!