Let x be the time it takes for the trip to be completed given that the speed is y.
When the time is 30 minutes (equal to 0.5 hour) shorter than x, the speed is 8 mph more than the original speed.
The equations that would best represent the given conditions are:
(1) 120 = (x)(y)
(2) 120 = (x - 0.5)(y + 8)
Simplifying,
y = 120/x
Substitute:
120 = (x - 0.5)(120/x + 8)
The value of x from the equation is 3. Thus, if I go with the usual speed, the time it will take me to finish the trip is approximately 3 hours.
Answer:
crescent Moon crescent Moon
"Speed" is the rate at which distance is being covered .... the ratio
of distance covered to the time it takes.
"Velocity" is the rate at which distance is being covered .... the ratio
of distance covered to the time it takes ... AND the direction in which
it is covered. 'Speed' with the direction of the motion.
Hello,
Here is your answer:
The proper answer to this question is "because of there substantial size the rock rests on another rock which keeps it balanced".
If you need anymore help feel free to ask me!
Hope this helps!
-- reduce the length of a wire to 1/2 . . . cut the resistance in half
-- reduce the diameter to 1/4 . . . reduce the cross-section area by (1/4²) . . . increase the resistance by 16x .
-- R2 = (R1) · (1/2) · (16) = 8 · R1
<em>-- R2 / R1 = 8</em>
