Answer:

Step-by-step explanation:
Given



Required
Determine the probability of selecting two fakes
The probability can be represented as thus: 
Using the following probability formula, we have:

Each probability is calculated by dividing number of fakes by total number of gems:

The minus 1 (-1) represent the numbers of fake and total gems left after the first selection




<em>Hence, the required probability is approximately 0.504</em>
Answer:
4/5
Step-by-step explanation:
The value of x that will make the proportion true is
C. 7
Answer:
B is the best answer., formula for square is L²