Answer:
1 < a < 13/5
Step-by-step explanation:
2 < 2a - 3(1 -a) < 10
2 < 2a - 3 + 3a < 10
2 < 5a - 3 < 10
2 + 3 < 5a - 3 + 3 < 10 + 3
5 < 5a < 13
5/5 < 5a/5 < 13/5
1 < a < 13/5
For this case what you must do is add the number of hours to perform the different activities.
We have then:
14 person-hours of labor to break up to driveway and clear away the rubble.
8 person-hours of labor to pour and smooth concrete for the new driveway.
Adding both activities we have
14 + 8 = 22
answer
it takes to break up to driveway, clear away the rubble, pour the concrete, and smooth the concrete about 22 person-hours of labor
X + 2/3 = 2x - 4/2
2/3 + 4/2 = 2x - x
2 + 2/3 = x
8/3 = x
I hope this helps!
Yes, it is right... you correctly distributed the negative, and combined like terms... great job!
