Answer:
y =
Step-by-step explanation:
Rearrange making x the subject, that is
y = 10x ( divide both sides by 10 )
= x
Change y back into terms of x, thus
(x) = or y =
Let, Joseph has the number of DVDs = x
Then, Jordan has = 4/5 * x
It is given that Jordan has = 56
So, It would be: x * 4/5 = 56
x = 56 * 5/4
x = 14 * 5
x = 70
In short, Your Answer would be 70 DVDs
Hope this helps!
Answer:
No extraneous solution
Step-by-step explanation:
We have the logarithmic equation given by,
i.e.
i.e.
i.e.
i.e.
i.e.
i.e.
So, the solution of the given equation is x=4.
Now, as we domain of square root function is x > 0 and also, the domain of logarithmic function is .
Therefore, the domain of the given function is x > 0.
We know that the extraneous solution is the solution which does not belong to the domain.
But as x=4 belongs to the domain x > 0.
Thus, x = 4 is not an extraneous solution.
Hence, this equation does not have any extraneous solution.
The answer is 3x^2-12=-12, imiplies <span>3x^2 = - 12 + 12 = 0
so </span><span>3x^2 = 0 implies x = 0
there is one solution, x =0</span>