Answer:
76.2838
Step-by-step explanation:
E[X+Y] = E[X] + E[Y]
E[X] is the average of X or expectancy of X
E[Y] is the average or expectancy f Y
E[X] = 40P(student is in bus 1)+33P(student is in bus 2)+25P(student is in bus 3)+50P(student is in bus 4)=
40(40/148) + 33(33/148) + 25(25/148) + 50(50/148) = 39.2838
E[Y] = (number of students)/(number of drivers) = 148/4 = 37
So E[X+Y] = 39.2838 + 37 = 76.2838
Answer:
3/4 · 7/5=21/20
Step-by-step explanation:
3/4 ÷ 5/7=21/20
Hope this helps!
Answer:
6/5 or 1 1/5
Step-by-step explanation:
2/3 * 9/5
~Multiply both numerators and denominators together
18/15
~Simplify
6/5
Best of Luck!
Create a proportion: 4/7=x/392
Cross multiply: 7x=1568
Divide: 1568/7=224
x=224
Step-by-step explanation:
27×15=405 which means there is 95$ left
