The expression is:
(z^2 - 4)
_______
z - 3
_______________
z + 2
___________
z^2 + z - 12
You can factor the numerator z^2 - 4 = (z + 2) (z - 2)
And the denominatior z^2 + z + 12 = (z + 4)(z - 3)
That permits to write the quotient as:
(z + 2)(z - 2)
___________
z - 3
_______________
z + 2
___________
(z + 4)(z - 3)
Now you can multiplicate the numerator of the numerator times the denominator of the denominator, and multtiplicate the denominator of the numerator times the numerator of the denominator to obtain:
(z + 2)(z - 2)(z + 4)(z - 3)
____________________
(z - 3)((z + 2)
Cancel the factors (z - 3) and (z + 2) because they are in both the numerator and the denominator =>
(z - 2)(z + 4) = z^2 + 2z - 8
The restrictions are that none of the cancelled factors can be 0, so z ≠ 3 and z ≠- 4.
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Hi!
There is no way to tell what the means are.
To find the mean of a data set, you need to know how many numbers are in it, and what they all are. We don't know either of these. Therefore, D is your answer.
Hope this helps! :)
-Peredhel
For this case we must solve the following equation:
Subtracting 2 from both sides of the equation we have:
Equal signs are added and the same sign is placed.
Multiplying by 4 on both sides of the equation we have:
Thus, the solution of the equation is
Answer:
Answer:
49.45
Step-by-step explanation:
15% of 43 dollars is 6.45 and 43+6.45 is 49.45