Write as an addition problem: -49 - (-3)
1 answer:
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Answer:
Part 1 .
As per the given statement: In t hours the train has traveled s miles.
Distance of the train = s mile
Time = t hours
Formula for :
Speed of the train(v) =
or
mph .....[1]
Substitute the value of t = 3 hours and s = 180 miles in [1], to solve for v;
Therefore, the speed of the train(v) is, 60 mph
Part 2.
Similarly,
The formula for speed of the train (v) is given by;
Substitute the value of t = 2.5 hours and s = 225 miles to solve for v;
Therefore, the speed of the train(v) is, 90 mph
Answer:
Step-by-step explanation:
Given
Required
Find the constant of variation
From the question, the variation is as follows
Convert variation to equation
Where k represents the constant of variation
Make k the subject of formula;
Multiply both sides by s * t
Divide both sides by p
Substitute the values of p, r, s and t in the above equation
Divide numerator and denominator by 6
Hence, the constant of variation is;