<span>3x+5y=4...(1)
2x-y=-7...(2)
by(2) : y = 2x+7
subsct in (1) :
3x +5(2x+7) = 4
13x = - 31
x = -31/13
y = 2(-31/13)+7 = 29/13</span>
Answer:
only the first two i am pretty sure thw other ones make any sense
Step-by-step explanation:
Answer:
10 days.
Step-by-step explanation:
8÷12 (because you can not divide people.
.666
take that and multiply it by 15
you will get 10
Answer:
6
Step-by-step explanation:
If u round it to the nearest 1
no u can only buy 6, or u dont have enough money for 7
