Answer:
The answer to your question is the second choice
Step-by-step explanation:
4x/ (x - 7) - (x +7) / x
- Find the greatest common factor from x and (x - 7)
GCF = x(x - 7)
- Substract the terms
[4x(x) - (x + 7)(x - 7)] / x(x - 7)
- Simplify
[ 4x² - x² + 49] / x(x - 7)
[ 3x² + 49] / x(x - 7)
- Result
3x² + 49 / x(x - 7)
The only factor that both terms have is d
Answer:
The z-score of a teenage with waist size 33 inch is 2
Step-by-step explanation:
Mathematically, the z-score can be calculated using the formula;
z-score = (x- mean)/SD
where mean = 29 inches , SD = 2 inches and x = 33 inch
Plugging these values, we have
z-score = (33-29)/2 = 4/2 = 2
It is understood that 5.4^0 is the number 5.4 raised to the power zero.
There is a rule for this: any number raised to the power zero is 1.
So, 5.4 ^ 0 = 1.
You can show that any number raised to the power of zero is 1 using this:
A^0 = (A)^(m - m) = [A^m] / [A^m]
Given that the numerator and the numerator of that fraction are equals the result is 1.