Answer: 1 hour
Step-by-step explanation:
Let the distance they walked be in time and the distance they walked be in time ,then
Walking speed=
Riding speed=
Also the total time taken=3 hours
∴...(1)
Since the total distance= 20 km
∴
Thus, the they spent 1 hour time in walking.
Answer:
Graph B
This is because of the vertical line test. Say you were to draw a vertical line that stretches through the whole graph. If this line you draw passes through more than two points of the same line/function/whatever b is, it is not a function.
I believe the correct answer would be that it has one solution which is 5. Calculating x for the quadratic equation, you will only get one value so it should be one solution. Hope this answers the question. Have a nice day.
1/4 divided by 5 is 0.05 or 1/20
L=w+2 and 2w+2l=44
substitute equation for length in perimeter equation
2w+2(w+2)=44
2w+2w+4=44
4w+4=44
4w=40
w=10
substitute width into length equation to get length
l=10+2
l=12
a=lw
a=12*10
a=120 cm^2