Answer:
0.0108 = 1.08% probability that a sophomore non-Chemistry major and then a junior non-Chemistry major are chosen at random.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Probability that a sophomore non-Chemistry major
Out of 92 students, 9 are non-chemistry major sophomores. So

Then a junior non-Chemistry major are chosen at random.
Now, there are 91 students(1 has been chosen), of which 10 are non-chemistry major juniors. So

What is the probability that a sophomore non-Chemistry major and then a junior non-Chemistry major are chosen at random

0.0108 = 1.08% probability that a sophomore non-Chemistry major and then a junior non-Chemistry major are chosen at random.
Answer:
Step-by-step explanation:
1st on is one solution
2nd one is no solution (the lines have the same slope but different y- intercepts
3rd is infinitely many solutions (the equations are the same)
Because 1 * 21 = 3 * 7 ( 21 = 21 ) , 1/3&7/21 form a proportion.
A/B = 11/15 OR 15 x A = 11.B OR B= 15A/11
Actual Gallons in A = 550 x 66 % = 363 gal
Total capacity of B = 15A/11 OR (15 x 550)/11 = 750 gal.
Actual Gallons in B = 750 x 53% = 397.5 gal