Answer:
3.3
Step-by-step explanation:
Solving t2-6t+9 = 0 by the Quadratic Formula . This quadratic equation has one solution only. That's because adding zero is the same as subtracting zero.
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.
If the diameter is 100
The radios is 50 so using the formula
C=2π r
the circumferences is:
314.159
Answer:
Line d y = -3x -3
Line e y = -3x -1
Line f y= -3x+2
To write the equation of a line, you need the slope and the y-intercept. The slope of each line is -3. Find the y-intercept on the graph and then substitute it into the equation y = mx+b for b.
Line d has y-intercept (0,-3)
y = -3x -3
Line e has y-intercept (0,-1)
y = -3x -1
Line f has y-intercept (0,2)
y= -3x+2
