Answer:
Step-by-step explanation:
Given that a math exam has 44 multiple choice questions, each with choices a to d.
A student answers just by guessing. So no of questions he answers X is binomial with constant probability 1/4 = 0.25
We can find probabibility using binomial as
P(X=12) =
If approximated to normal we have
mean = np = 11
Std dev =
With continuity correction we get
P(X<12)
=P(X<11.5)
=0.5691
Answer:
9.50 + x = 35
Step-by-step explanation:
Assuming you spent $9.50 on popcorn and spent $35 in total, what would you think x repreaents? The tickets dont have an amount, so x is tickets.
Answer:
x = any number greater than 5
Step-by-step explanation:
8 x 5 is 40 so any number greater than 5 would work for this inequality.
Answer:
x = 5
Explanation:
Subtracting 2 from both sides of the equation
17 − 2 = 3x +2 − 2
15=3x
Dividing both sides by 3
15/3 = 3x/3
5 = x
Answer:
5
Step-by-step explanation: