Answer:
A.
Step-by-step explanation:
Both are positive values, so it's just four blue plus eight blue.
Answer:
The 0 and 1 outcomes would be considered unusual.
Step-by-step explanation:
We can define as usual outcomes, the ones that fall between .
According to a binomial distribution, s value is
The expected value out of a 8 people sample is
Then, our interval of usual values lies between
We can conclude that 0 and 1 (the results that lie outside of the interval) are unusual.
No
The Arrows NEED TO BE STRAIGHT ACROSS FOR IT TO BE A FUNCTION
Answer: x=50
Step-by-step explanation:
Use the distributive property to multiply -0.2 by x-20.
-0.2x+4=44-x
Add x to both sides.
-0.2x+4+x=44
Combine -0.2x and x to get 0.8x.
0.8x+4=44
Subtract 4 from both sides.
0.8x=44-4
Subtract 4 from 44 to get 40.
0.8x=40
Divide both sides by 0.8.
x=40/0.8
Expand 40/0.8 approx 50 by multiplying both numerator and the denominator by 10.
X=400/8
Divide 400 by 8 to get 50.
x=50
9:12 does not describe the ratio of blue marbles and red marbles