Answer:
- boat: 15 mph
- current: 5 mph
Step-by-step explanation:
The relation between time, speed, and distance is ...
speed = distance/time
__
The speed downstream is ...
downstream speed = (100 mi)/(5 h) = 20 mi/h
The speed upstream is ...
upstream speed = (100 mi)/(10 h) = 10 mi/h
The boat's speed in still water is the average of these:
boat speed = ((downstream speed) + (upstream speed))/2 = (20 +10)/2 mi/h
boat speed = 15 mi/h
__
The speed of the current is the difference between the travel speed and the boat speed:
current speed = downstream speed - boat speed
= (20 mi/h) - (15 mi/h)
current speed = 5 mi/h
Since M is the midpoint then QM and MR are equal to each other. So by setting them equal to each other we can find the value of x first.
16 + x = 2(x + 2)
16 + x = 2x + 4
16 = x + 4
12 = x
Now we can substitute in the value of x to find the length if QM.
16 + x
16 + 12
28
Hope this helps :)
The solution is: x >-2/3 or x< -2
Step-by-step explanation:
we will solve the inequalities one by one
So,
First inequality is:
Second inequality is:
The solution is: x >-2/3 or x< -2
Keywords: Inequalities, compound inequalities
Learn more about inequalities at:
#LearnwithBrainly
Add them all around the top pointing down
Answer:
the answer is c
Step-by-step explanation:
