1. B
Adding a constant offset to the data does not change its variance. Scaling it, or applying a non-linear function will change the variance.
2. A
For a given number on the 3rd die, the first two dice can match it 11 ways, or have two numbers that match in 5 additional ways. Thus probability of 2 or more numbers being the same is 6*16/216 = 4/9.
Answer:
Step-by-step explanation:
U can reduce this into
Which is a square.
Plug in the values 1,4, and 9 into the equation one by one. Plug it in as the x value.
y=-1/2 times root 1 = -1/2
(x,y)=(1,-1/2)
y=-1/2 times root 4 = -1
(x,y)=(4,-1)
y=-1/2 times root 9 = -3/2
(x,y)=(9,-3/2)
Answer:
3052.1 in³
Step-by-step explanation:
The volume of a sphere is given by the formula ...
V = 4/3πr³ . . . . r is the radius
The radius is half the diameter, so is 9 in. Then the volume is ...
V = (4/3)(3.14)(9 in)³ = 972(3.14) in³ ≈ 3052.1 in³
