Answer:
The answer is:
30 minutes.
Step-by-step explanation:
We are given the following information:
at 160 m/min, tool life = 5 min.
at 120 m/min, tool life = 17 min.
This means that as the speed reduced from 160 m/min to 120 m/min, the tool life increased from 5 min. to 17 min, hence the difference between the changes are:
speed = 160 - 120 = 40 m/min
tool life = 17 - 5 = 12 min.
Therefore, it can be concluded that a change of speed of 40 m/min, increases the tool life by 12 min.
40 m/min = 12 min
∴ 1 m/min = 12/40 min.
∴ 100 m/min = 12/40 × 100 = 0.3 × 100 =30 min.
Answer:
40
Step-by-step explanation:
75% divided by 3 since its 3/4 of 100
do the same to 30
Answer:
2(x^2+3x+2) = 2(x+1)(x+2)
Answer is D.
Step-by-step explanation:
Step-by-step explanation:
1. 
(chain rule)
2 
Answer:
4,800
Step-by-step explanation: 6 times 5 times 8 times 20=4800 :D
