Because α varies directley to β
(k = constant)
α=7 when β=2
7= 2k
k=
so when α=21
21= b
b= 6
(k = constant)
α=7 when β=2
7= 2k
k=
so when α=21
21=
b= 6
पाठशाला
2 answers:
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<u>Answer: </u>
Option (c)
The average speed between 2.8 km and 4.2 km is 42 km/h
<u>Explanation:</u>
Given, the distance between 2.8 km and 4.2 km is 4.2 - 2.8 = 1.4 km
Time (in hours) between 2.8 km and 4.2 km
= 0.084 – 0.051
= 0.033 hr
Speed =
Speed =
Speed = 42.4 km/hr = 42 km/h (rounded to nearest)
Therefore, the average speed between 2.8 km and 4.2 km is 42 km/hr
Hence, Option (C) is correct