Answer:
x= -1; y= -2
Step-by-step explanation:
A: 6x+4y= -14
B: -x-5y=11
6B is : -6x-30y=66
A+6B is : -26y=52
so y= -2
so A becomes : 6x+4.(-2)= -14
so x= -1
Answer:
Step-by-step explanation:
It will be 7x+1
Answer:
12.29
Step-by-step explanation:
Answer:
Step-by-step explanation:
Suppose that at time we have x mold cells. We are told that after 12 minutes the amount present is double. That is a we have 2x cells. Then, at we have (2x)*2 = 4x. We can continue as follows
we have (4x)*2 = 8x.
we have (8x)*2 = 16x
(one hour later) we have (16x)*2 = 32x.
So after one hour from now we have 32x cells.