Answer:
14/15
Step-by-step explanation:
simple
3/5 + 1/3= 14/15
It’s D, I graphed on a calculator and the line was straight
Answer:
B. 0.4
Step-by-step explanation:
Use the definition of the probability

You have to find the probability that a randomly selected reference book is hard cover. Hence, from the table
- Number of all possible outcomes = Number of Reference books = 25
- Number of all favorable outcomes = Number of Hardcover Reference books = 10
So, the probability is

I believe in standard form this would be 31/2 + 27i/2
I think the answer could possibly be a