Answer:
(3C1 × 4C1)/12C2
Step-by-step explanation:
Total electives = 3 + 4 + 5 = 12
Art: 3C1
History: 4C1
1 Art & 1 History = 3C1 × 4C1
Probability = (3C1 × 4C1)/12C2
Answer:
4
Step-by-step explanation:
1) they would wash about 11 cars per hour 72/6.5
2) 13.99 per 1/2 pound 34.99/2.5
(9,-5) times 2.5 is (22.5,-12.5)
The answer is (22.5,-12.5)
Hope this helps!