Answer:

Step-by-step explanation:
From the question we are told that:
Number of boys
Number of girls 
Total Number of students


Generally the equation for Probability of Choosing a Girl is mathematically given by



Answer:
Please look at the attachment for step by step guide and solution.
Answer:
20.7 units
Step-by-step explanation:
The reading is:
-20.7
So, 20.7 units below the water's surface
Answer: 7
Step-by-step explanation: Imagine having 5 chocolate bars and then adding 2, or you could try counting with your fingers. Another method is writing a number line and going plus 2 from five so you can visualize it more.