A fifty-fifty sugar-water solution would contain the same amount of water by weight as by sugar, that is, 0.5 lb water.
In other words, a solution that is made up of 0.5 lb sugar and 0.5 lb water is a 50% sugar concentration.
I prefer D.
It's clear that Kevin took (1/4)x.
Keith took (1/4)x -> kevin's amount
* 2 -> twice.
-1 -> 1 less.
So Kevin + Keith = (1/4)x + (1/4)x * 2 - 1 = (3/4)x - 1.
Answer:
Step-by-step explanation:
The application of probability distribution function is employed in solving the question. The detailed analysis and step by step approach is as shown in the attached file.
1. 1/a^8 (Sorry I can't find out what the others are)