<span>v = 45 km/hr
u = 72 km/hr
Can't sketch the graph, but can describe it.
The Y-axis will be the distance. At the origin it will be 0, and at the highest point it will have the value of 120. The X-axis will be time in minutes. At the origin it will be 0 and at the rightmost point, it will be 160. The graph will consist of 3 line segments. They are
1. A segment from (0,0) to (80,60)
2. A segment from (80,60) to (110,60)
3. A segment from (110,60) to (160,120)
The motorist originally intended on driving for 2 2/3 hours to travel 120 km. So divide the distance by the time to get the original intended speed.
120 km / 8/3 = 120 km * 3/8 = 360/8 = 45 km/hr
After traveling for 80 minutes (half of the original time allowed), the motorist should be half of the way to the destination, or 120/2 = 60km. Let's verify that.
45 * 4/3 = 180/3 = 60 km.
So we have a good cross check that our initial speed was correct. v = 45 km/hr
Now having spent 30 minutes fixing the problem, out motorist now has 160-80-30 = 50 minutes available to travel 60 km. So let's divide the distance by time:
60 / 5/6 = 60 * 6/5 = 360/5 = 72 km/hr
So the 2nd leg of the trip was at a speed of 72 km/hr</span>
Answer:
14 Bracelets
Step-by-step explanation:
1/10 is 6 minutes
1/4 is 15 minutes
6+15=21 minutes
60 minutes x5 is 300 minutes
300/21 = 14.3 but you cannot leave one in the middle so the answer is 14
I think it would be the first one because the y intercept is 8 and to find the gradient u do rise/run
Answer:
The first one is False.
Step-by-step explanation:
If the correlation coefficient can also be -1 if the data lies on an upward tilting straight line.
Hi DoraTheExplorer36!
In order to solve number 10:
area of a circle : A=pie * radius (r) squared
A=πr2
Radius is half of a circle and diameter is a full line across a circle
Solve :
A=πr2
A= 3.14 * 11 (radius) 2
1193.0116
Rounded to the nearest whole number is : 1193.
Your answer would be 1193.
Hope that helped! :)
