Answer:
prepare for unexpected bills or emergency repairs
Step-by-step explanation:
Explanation
The shaded area represents a segment. This can be solved with the formula below;
Since the triangle is an equilateral triangle, it implies that the angle subtended at the centre is 60 degrees. Also, the given radius is 7 cm
Answer:
Using the binomial distribution, it is found that about 75 batteries each day are defective.
For each battery, there are only two possible outcomes, either it is defective, or it is not. The probability of a battery being defective is independent of any other battery, hence the <em>binomial distribution</em> is used to solve this question.
<h3>What is the binomial probability distribution?</h3>
It is the <u>probability of exactly x successes on n repeated trials, with p probability</u> of a success on each trial.
The expected value of the binomial distribution is:
In this problem:
- 3 out of 20 batteries are defective, hence p = 3/20 = 0.15.
- Each day, 500 batteries are produced, hence n = 500.
Then:
About 75 batteries each day are defective.
More can be learned about the binomial distribution at brainly.com/question/14424710
There are 6 things
1 2 3 4 5 6
There are 3 at a time
So 6!(things) / (6-3)! (things-how many at a time)
6!/(6-3)! Or 6!/3!
! Means multiply all below that number so
6×5×4×3×2×1/ 3×2×1
30×4×3×2×1/3×2×1
You can simplify 3×2×1 since they are both on top and bottom they cancel out
30×4= 120