Sprint events in track and field …

Sprint events in track and field usually consists of the 100 m, 200 m and 400 m race though 60 m dashes are also held on occasion. These races are largely based upon the athlete's ability to accelerate to his or her maximum speed in the quickest time possible. Girish wants to participate in the 200 m Sprint. He can currently run that distance in 45 sec. But he wants to do that in under 30 sec. With each day of practice, it takes him 2 sec less. Respond to the above situation by answering the questions given below. (1) Which of the following forms an A.P for the above given situation. (i) 45, 90, 180........ (i) 45, 43, 41. .. (ii) 45, 47, 49, . (iv) -45, -47, -48, (2) What is the minimum number of days he needs to practice till his goal is accomplished. (i) 8 days (iii) 9 days (11) 8.5 days (iv) none of these (1) (1) (3) Which of following term is not in the AP of the above given situation. (i) 31 (ii) 30 (iii) 29 (4) The nth term of the sequence a, a + d, a 2d,... is (i) and (ii) a-(n-1Xd (ii) a + (n-1)d (5) If x. y, z are in A.P, then is equal to y-2 (i) 1/2 (iii) 1 (ii) 2 (iv) 0 (iv) 27 (1) (iv) n + nd (1) (1) (1) (1) 18. (1)

(A + B )²

If 1/2 is a root of equation x^2+kx- 5/4 =0 , then what is the value of k

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Prove that root 8 is an irration number

Find the nature of quadratic equation x^2 +x -5 =0

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Venu Gopal has twice

X-y=5

Is it possible to design a rectangular mango Grove whose length is twice it's breadth, and the area is 800m²? If so, find it's length and breadth

sin60° cos 30°+ cos60° sin 30°