The triangles are similar because they are the same shape. :) Good luck
Answer:
Step-by-step explanation:
b=boy
a= a on the exam
b=15
b∩a=6
b'∩a=3
b'∪a'=?
b'∪a'= b'+a'-b'∩a'
a= b∩a+b'∩a (law of total probability) = 9
a'= 25-9 = 16
b'= 25-15= 10
16+10-7=19
19/25= .76
Answer: 8512
Step-by-step explanation: if he makes 3% a year more for 4 years we have to add 3%+3%+3%+3%=12% and add it to 7600 so 7600+12%=8512
Check the picture below.
now, since we know what "f" is, let us use the CNT triangle with the small COR one.