Answer:

Step-by-step explanation:
2/3= 0.66666
Dividing the given value to obtain the decimal value gives:

The last number is 7 which is greater than 5 this will increment the previous number by 1.
As,the previous values are also '6', so this step will continue till three significant figures.

So the value rounded up to 3 significant is 
Y = 42.5x + 45.....for 5 hrs.....x = 5
y = 42.5(5) + 45
y = 212.50 + 45
y = 257.50 <===
The first one I'll go with 2nd one ...But I'm dumb so hope that helps
9514 1404 393
Answer:
see the attachment for a graph
(x, y) = (0.5, 2.5)
Step-by-step explanation:
The first equation has a slope of 1 and a y-intercept of 2.
The second equation has a slope of -1 and a y-intercept of 3.
The two lines cross at the point (0.5, 2.5), which is the solution to the system of equations.
Answer:
5) -1-3=-4 or -1+-3=-4
6) -4+3=-1
Step-by-step explanation: