Answer:
2/2
Step-by-step explanation:
because take it away
Let's use the variable n for time (in hours)
70n + 80n = 270
150n = 270
n = 1.8
It will take 1.8 hours, or 1 hour and 48 minutes
Answer:
Step-by-step explanation:
3x+y=2............(1)
4y=12-12x........(2)
Making y as subject in (1) and substitute in (2)
y = 2 - 3x......(3)
4(2 - 3x) = 12-12x
8 - 12x = 12 - 12x
12x - 12x = 12- 8
0 = 4
So no solution since variable cancelled out
Slope formula = y=mx+b
2x+4y=12
Minus 2x from both sides
4y= -2x+12
Divide 4 from both sides
Y= -1/2x + 4
Hope this helps!
