Answer:

Step-by-step explanation:
If we call x the number of correct questions obtained in the 9 attempts, then:
x is a discrete random variable that can be modeled by a binomial probability distribution p, with n = 9 trials.
So, the p of x successes has the following formula.

Where:
n = 9
p = 0.6
We are looking for P(x<4)
By definition:

Then:


Answer:
$16
Step-by-step explanation:
$2 x 5 = $10
1 pound = $9
2/3 = $6
10+6=16
Answer:
455
Step-by-step explanation:
328
<u>+ 127</u>
455
If this is not what you are looking for then please be more specific next time alright?
Answer:
2.005 x 10^2
Step-by-step explanation:
First you move -15 over which makes it 7b=5b+12
then you move 5b over so then its 2b=12
divide b=6