Answer:
There's 2 solution, x= -1 and x= 2
Step-by-step explanation:
Answer:
To get system B, the SECOND equation in system A was replaced by the sum of that equation and the FIRST equation multiplied by FOUR. The solution to system B IS de same as the solution to system A
Step-by-step explanation:
x-y=3 equation 1
-2x+4y=-2 equation 2
so, multiplying by four the equation 1 we have
4x-4y=12 equation 3
later sum equation 3 and equation 2 we have
2x=10
Answer:
0.25 k miles
Step-by-step explanation:
15 minutes =1/4 of an hour
Distance= speed*time= k (1/4)= (1/4) k= 0.25 k miles
