Answer:
1. The speed of the truck, S = D/T.
2. The formula that connects D and T is: S = D/T.
3. The coefficient of variation, k, is the ratio of the standard deviation to the mean speed.
Step-by-step explanation:
a) The speed of a truck at a fixed speed is given as the distance covered by the truck divided by the time it takes the truck to cover the said distance. This implies that speed is a function of distance and time. However, this formula represents the mean speed. There are variations in speed.
b) If the truck covers a distance of 60 kilometers, for example, under 3 hours, we can conclude that the speed is 20 kilometers per hour (60/3) or 20 km/hr.
Answer:
Assuming it would be -x-4
STEP-BY-STEP SOLUTION:
Profit = $25
Cost = $125
Profit as a % of the cost price
= ( 25 / 125 ) × 100%
= ( 1 / 5 ) × 100%
= 20%
ANSWER: 20%
The range would be (-1,1).
Hope this helps! (:
