To solve equations like this we need to do inverse operations.
First we need to build an equation: 9+3x=21
We pass the nine to the other side, subtracting the 9 to 21, that leaves us with 3x=12
After that we just divide 12 by 3, wich gives us x=4, or, as it says in the question: n=4
Now let's double check:
N=4, since 3*4=12 and 12+9=21
Hope it is helpful :)
Answer:
x^8/3y^2
Step-by-step explanation:
Answer:
Yes, it is a linear equation
Step-by-step explanation:
Since the equation is in the form y = mx + b, this means that it is a linear equation.
For every increase in x, the y value will increase by the same amount every time.
So, yes, it is a linear equation.
Answer:
3/5
Step-by-step explanation:
The immediate translation to a fraction would be 6/10, but it simplifies to 3/5.
Answer:
Step-by-step explanation:
Because x=1 and x=4 are the solutions to x-1=0 and x-4=0, then we have (x-1)(x-4) in the denominator.
Because (-1,0) and (-6,0) are the solutions to x+1=0 and x+6=0, then we have (x+1)(x+6) in the numerator.
Now we have 
where we plug in (0,8) to solve for a:
Therefore, the equation for the rational function is
