Answer:
13/40
Step-by-step explanation:
Since fraction wont come clear in Brain.ly I am attaching a picture typed in word
See, pls, the attachment.
The used method based on properties of functions.
Answer:
Number of years between 1950 and 2100 =

150 = 50 + 50 + 50 years.

So, total population in 2100 is 375,000,000.

First, find the number of females in the class. 
Then, just write the ratio. 
transversal angles
Step-by-step explanation:
When two or more lines are cut by a transversal, the angles which occupy the same relative position are called corresponding angles . When the lines are parallel, the corresponding angles are congruent .