Answer:
11
Step-by-step explanation:
do multiplication/division before addition/subtraction
Answer:19.12
I’m not sure if this is the answer but I need the points so here.
Answer: The average age is 7.1 years.
This problem is an example of when we need to take a weighted average. We simply can't just find the average of 5 and 8, because there are different children of each each.
To start, lets multiply the total number of children by their individual ages.
6 x 5 = 30 years
14 x 8 = 112 years
There are 142 years among the 20 years, so divide 142 by 20. This gives us an average age of 7.1 years.
I believe the answer is the last option
The correct answer is: P(even or prime) = 5/6
Explanation:
First the P(E) = Probability of Even = 3/6 = 1/2 (because 2,4,6 are even numbers)
P(p) = Probability of Prime = 3/6 = 1/2 (because 2,3,5 are the prime numbers)
Now
P(even AND prime) = 1/6 (because 2 is not only an even number but also the prime number)
Hence
P(even or prime) = P(E) + P(p) - P(even AND prime) = 1/2+1/2 -1/6 = 5/6
