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Sohil Rajput

· started a discussion

· 1 Months ago

frfre (Question: 90758.0 )

11x2 - 35x - 1500 = 0
Roots: 13.37626560224, -10.194447420422

Discriminant: 67225
Vertex: (1.5909090909091, -1527.8409090909)
Factored: f(x) = 11(x - 13.37626560224)(x + 10.194447420422)
Sum of Roots (-b/a): 3.1818181818182
Product of Roots (c/a): -136.36363636364

Question:
 A car travels for 11 hours. Out of this, it travels 100 km at a certain speed and then it increases its speed by 15 km/hr to cover the remaining 280 km. Find the time it takes to travel the distance of 280 km.
Options:
A) 10 hours
B) 9 hours
C) 11 hours
D) 7 hours
Solution:

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