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A carriage on a foggy day passed by a man
who was walking at the rate of 3 km/hr in the
same direction. He could see the

By Gabriella

A carriage on a foggy day passed by a man
who was walking at the rate of 3 km/hr in the
same direction. He could see the carriage for
4 min and it was visible to him up to a distance
of 100 m. What was the speed of the carriage?​

About the author
Gabriella

alpha and beta are the zeros of the quadratic polynomial (x) x²+x-2
find the value of 1/alpha -1/beta​


Factorize the following using identities:
(i) 9a – 2552
(ii)48p? – 279
(iii) 36×2 + 60xv + 25y
(iv) (20

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