<span>If a=-2 and b=1, then
3a-2b
= 3(-2) -2(1)
= -6 -2
= -8</span>
Micheal's rate is 7 miles per 80 minutes, which can be written as a fraction:
7/80, which equals 0.0875.
Now you can say that Micheal runs 0.0875 miles per one minute.
Multiply 0.0875 by 64,
64(0.0875) = 5.6
Micheal would run 5.6 miles in 64 minutes.
The number g is 7
24-10 = 14
14/2=6
Answer:
B. The Gantt chart
Step-by-step explanation:
The best chart that would best fulfill Julius's requirement is the Gantt chart
A Gantt chart is a type of chart that is used to give a visual illustration of tasks or project schedule for a particular time. Gantt chart is a special bar chart plot with the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. Gantt charts are used for planning projects of all sizes. They show the start date of the project, the list of project tasks, the people working on each task, start and finish time for the tasks, grouping of the tasks, tasks linkage and progress of the tasks.
Normal-travel DATA:
distance = 240 km
rate = x km/h
time = d/r
= 240/x hrs
_______________________
Bad weather DATA:
distance = 240 km
rate = (x-20) km/h
time = 240/(x-20) hrs
______________________
Bad time - normal time = 2 hrs
240/(x-20) - 240/x = 2
120/(x-20) - 120/x = 1
120x -120(x-20) = x(x-20)
20 = x^2 -20x
x^2 - 20x - 20 = 0
x = [20 +- sqrt(20^2 - 4*1*-20)]/2
x = [20 +- sqrt(480)]/2
x = [20 +- 4sqrt(30)]/2
x = 10 +- 2sqrt(30)
