if the speed of nike is uniform which is 65 km/h and the distance is 15 km what will be the time taken to reach the destination
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Answered by
3
Answer
Let 2x and 2x+2 be the required even numbers.
Given that the sum of squares numbers is 580.
Therefore,
(2x)2+(2x+2)2=580
4x2+4x2+4+8x=580
8X2+8x+4−580=0
8x2+8x−576=0
x2+x−72=0⇒ Required quadratic equation.
x2+9x−8x−72=0
(x+9)(x−8)=0
x=−9 or x=8
Case I:- x=−9
Therefore, the required numbers are-
2x=2×−9=−18
2x++2=2×−9+2=−16
Case II:- x=8
Therefore, the required numbers are-
2x=2×8=16
2x+2=2×8+2=18
Hence the required numbers are −18 and −16 or 16 and 18.
Answered by
2
Answer :
Let the time taken be t hour.
Speed (u) = 65 km/h
Distance (S) = 15 km
Time = Distance / Speed
t = S/u
t = 15/65 hour
t = 3/13 hour
t = 0.23 hour
Hope It May help you.
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