Answer: 72
Step-by-step explanation: 8x9=72
Answer:
Julie has 72 marbles
Step-by-step explanation:
Sam has 8 Julie has 9 times as much as sam has so 8x9=72
1: 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 10....
2: 2, 4, 6, 8, 10....
3: 3, 6, 9, 12, 15, 18, 21, 24, 27....
4: 4, 8, 12, 16, 20, 24, 28, 30....
5: 5, 10, 15, 20, 25, 30, 35 40, 45...
x=3 and y=1
subtract equation 2 from 1
then (2x+3y) -(2x+y) =9-7
2x-2x+3y-y =2
2y=2 therefore y=1
substitute y value in 2x+y=7
2x+1=7
2x=7-1
2x=6
x=3
i think it's -1 / -1
nut i'm not sure so if its wrong then sorry , and don't thank's me...
