Question

2. A survey asked 100 students about what meals they ate in the university cafeteria. The data
were as follows:
 48 ate breakfast
 49 ate lunch
 38 ate dinner
 17 ate breakfast and lunch
 15 ate breakfast and dinner
 18 ate lunch and dinner
 7 ate all three meals
(a) How many students ate only breakfast in the cafeteria?
(b) How many students ate at least two meals in the cafeteria?
(c) How many students ate breakfast and lunch, but not dinner, in the cafeteria?
(d) How many students did not eat any meals in the cafeteria?

Answer 1

i had already answered this one josh

Answer 2

i cant get c

Answer 3

48-17-8= 23 49-17-8 = 24 so 47 for c ?

Answer 4

for c
23+10+21 = 54.
for d
100 - (23+10+21+8+7+11+12) = 100 - 92 = 8

Answer 5

thanks so much, did you get my other problem i aasked ?

Answer 6

no type it properly

Answer 7

Using the simplex method, solve the following linear programming problem.
minimize z = x1 + 2x2 - 5x3
subject to x1 + 4x2 + x3 >_ 25
x1 + 7x2 + 6x3 <_100
x1 >_0; x2 >_ 0; x3 >_ 0

Answer 8

hey i will post the answer later on i have got some work will catch u in half an hour or so

Answer 9

see here u need to apply Big M Method for solving this and u r required to introduce artificial variables

Answer 10

its hard and i have class in 30 hour so no worries i have no clue

Answer 11

this one was much better c u later

Answer 12

thanks

Answer 13

hey see in this case u need to make pivot table wich i will be unable in making it here so will send u it in attachment