Problem

17.
SPRINT
Sprint events in track and field usually
consists of the $100m$ 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 $200mS$ Sprint. He can currently run that distance $n45scC$ But he
wants to do that in under $30scc$ With each day of practice, it takes him 2 sec less. Respond to the
above situation by answering the questions given below.
(a)
Which of the following forms $anA.P$ for the above given situation.
$\left(1\right)45,90,180,.....$ (i) $45,47,49$ . (iii) $45,43,41,.$ $...$ $\left(iy\right)$ $-45,-47,-48...$ ....
(b)
What is the minimum number of days he needs to practice till his goal is accomplished.
(i) $8days$ $\left(1\right)8.5day3$ (iii) $9days$ (iii) none of these
(c)
Which of following term is not in the A.P of the above given situation.
(i) 31 (ii) 30 (iii) 29 (iv) 27
(d)
$1t\times .y.zacinA \,_{.}P_{,} lnc$ $\dfrac {x-y} {y-z}$ is equal to $\left(i\right)$ $→$ ½ (ii) 2 (iii) $1$ $\left(iy\right)$ $0$
(e)
The nth term of the
(i) $a+nd$ (ii) $nccaa+da+2d...B$ $\left(ii\right)$ $a+\left(n-1\right)d$ $a-\left(n-1\right)d$ (iv) $n+nd$

10th-13th grade

Algebra

Search count: 108

Solution

Qanda teacher - NIMKI

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Student

thank you mam

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