Answer:
20
Step-by-step explanation:
This is a binomial distribution
n = 100; p = 1/5
E(x) = np = (100)(1/5) = 20
Answer:
range : {0, 2, 4}
Step-by-step explanation:
write down the same range once.
0 = 230 - 45x
Add 45x to both sides
45x = 230
Divide both sides by 45
x = 230 / 45
Simplify
x = 46 / 9
The solution represents the x intercept, which is where the graph intersects the x axis.
Answer:
H. 40%
Step-by-step explanation:
18/30 = 60%
So 60% of kids have last names with more than 8 letters.
That means 40% of kids have last names with fewer than 8 letters.
(Because the percentages have to add up to 100)
Hope this helps! :)
Answer:
D
Step-by-step explanation:
The answer to this problem should be the 4th one.
All real numbers can't be right as 0 obviously wont work. However, it is important to remember that sqrt of a number cant be negative, so x must either be greater than or equal to -1 and 1
