When you divide, the exponents subtract. -9 - (-12) = 3
3^3 = 27.
Answer:
1. Statistics
2. Sample
3. Population
4. Variable
5. Data
6. Parameter
Step-by-step explanation:
1. Statistics is the mean of the sample taken - The average speed that the 250 randomly selected drivers drove on Highway 50
2. Sample is the representative part of the population - The 250 randomly selected drivers who were on Highway 50
3. Population is the group of people from which the sample was taken - All people who drive on Highway 50
4. Variable is a quantity that has values which differ - The speed that a driver drives on Highway
5. Data is information obtained used for a specific purpose - The list of the 250 speeds that the drivers studied drove
6. Parameter is the mean of a population - The average speed that all drivers go on Highway 50
Answer:
D. 0.1353
B. 0.0473
Step-by-step explanation:
For an exponentially distributed random variable, the cumulative distribution function is:

with parameter λ=2, then P(X≥1) is equal to:

D. 0.1353
with parameter λ=1.5, then P(2≤X≤4) is equal to
B. 0.0473
Answer:
The measure of arc DC is 
Step-by-step explanation:
we know that
The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite.
![m\angle ATB=\frac{1}{2}[arc\ AB+arc\ DC]](https://tex.z-dn.net/?f=m%5Cangle%20ATB%3D%5Cfrac%7B1%7D%7B2%7D%5Barc%5C%20AB%2Barc%5C%20DC%5D)
substitute the given values
![63\°=\frac{1}{2}[115\°+arc\ DC]](https://tex.z-dn.net/?f=63%5C%C2%B0%3D%5Cfrac%7B1%7D%7B2%7D%5B115%5C%C2%B0%2Barc%5C%20DC%5D)
![126\°=[115\°+arc\ DC]](https://tex.z-dn.net/?f=126%5C%C2%B0%3D%5B115%5C%C2%B0%2Barc%5C%20DC%5D)

Answer:
y = x^2 -6x -27
Step-by-step explanation:
When "a" is a root, (x-a) is a factor. The minimum polynomial with the listed roots will be ...
y = (x -9)(x +3)
y = x^2 -6x -27