Answer:
c
Step-by-step explanation:
9x-5x=4x
40-23=17
your answer is -4x-17
Answer: 0.935
Explanation:
Let S = z-score that has a probability of 0.175 to the right.
In terms of normal distribution, the expression "probability to the right" means the probability of having a z-score of more than a particular z-score, which is Z in our definition of variable Z. In terms of equation:
P(z ≥ S) = 0.175 (1)
Equation (1) is solvable using a normal distribution calculator (like the online calculator in this link: http://stattrek.com/online-calculator/normal.aspx). However, the calculator of this type most likely provides the value of P(z ≤ Z), the probability to the left of S.
Nevertheless, we can use the following equation:
P(z ≤ S) + P(z ≥ S) = 1
⇔ P(z ≤ S) = 1 - P(z ≥ S) (2)
Now using equations (1) and (2):
P(z ≤ S) = 1 - P(z ≥ S)
P(z ≤ S) = 1 - 0.175
P(z ≤ S) = 0.825
Using a normal distribution calculator (like in this link: http://stattrek.com/online-calculator/normal.aspx),
P(z ≤ S) = 0.825
⇔ S = 0.935
Hence, the z-score of 0.935 has a probability 0.175 to the right.
Answer:
D) 
Step-by-step explanation:
You have to use the laws of exponents to solve this:
Power of a Power: 
. In this case, 
, all of the numbers in the parenthesis need to be multiplied to the power of 3: 
.
Quotient of Powers: 
. In this case, 
, all of the exponents need to be subtracted (but the 4³ (64) and 8 need to be divided): 
.
Use the Power of a Power again for the expression at the right: 
. You get: 
. Keep the subtraction/negative sign where it is.
Together, you get: .
Hope it helps!
Answer:x-2/x-5
Step-by-step explanation:
D) <span>She is correct; the histogram is skewed to the right because there is less data on the right side.</span>
