Answer:
5.78 * 10^8
Step-by-step explanation:
8.5 * 6.8 = 57.8
5+2=7
In scientific notation the number has to be greater than or equal to 1 and less than ten.
Answer:
No solution
Step-by-step explanation:
-3x-9=-3x-3-5
-3x-9=-3x-8
-9=-8
Answer:
0.98386991
0.9839
Step-by-step explanation:

Answer:
x= -1
y=2
Step-by-step explanation:
6x+5y=4
6x-7y=-20
Subtract