Janine inflated a ball with a radius of 18 cm.
The volume of that ball will be
Volume = 4 / 3 * pi * r^3
Volume = 4 / 3 * 3.14 * 18^3
Volume = 24416.64 cm^3
Janine inflated another ball with a radius of 12 cm.
The volume of that ball will be
Volume = 4 / 3 * pi * r^3
Volume = 4 / 3 * 3.14 * 12^3
<span>Volume = 7234.56 cm^3
</span>
Difference = 24416.64 cm^3 - <span>7234.56 cm^3
</span>Difference = 17,182.08 cm^3
Answer:
y=1x x 5
Step-by-step explanation:
In the input its going up by 1 and in the output its going up by multiplying by 5.
<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>
Step-by-step explanation:
A. 2(x+4)=2x+8
=G
B. 3(2x-1)=6x-3
=I
C. 4(x+2)=4x+8
=J
D. 2(x+3)=2x+6
=K
E. 3(4x+1)=12x+3
=H
A - G
B - I
C - J
D - K
E - H
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