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Represent graphically a displacement of 40 km , \( 30^{\circ} \) east of length.
cbse
class12
modelpaper
2012
sec-a
q8
math
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asked
Jan 11, 2013
by
thanvigandhi_1
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0
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1
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Represent graphically a displacement of 40 km, 30° east of north.
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Dec 7, 2012
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thanvigandhi_1
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Find the magnitude of two vectors \( \overrightarrow a \: and \: \overrightarrow b\) having the same magnitude and such that angle between them is \( 30^{\circ} \) and their scalar product is 3.
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Feb 3, 2013
by
thanvigandhi_1
cbse
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A box contains 30 bolts and 40 nuts .Half of the bolts and half of the nuts are rusted.If two items are drawn at random from the box,what is the probability that either both are rusted or both are bolts?
asked
Apr 10, 2013
by
sreemathi.v
isc
class12
modelpaper
2012
sec-a
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q8-b
0
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If $\overrightarrow a$ and $\overrightarrow b $ represent the two adjacent sides of a parallelogram, then write the area of parallelogram in terms of \( \overrightarrow a \: and \: \overrightarrow b\)
asked
Feb 3, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-a
q8
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0
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1
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If a young man rides his motorcycle at 25 km/hour, he had to spend Rs.2 per km on petrol. If he rides at a faster speed of 40 km/hour, the petrol cost increases at Rs.5 per km. He has Rs.100 to spend on petrol and wishes to find what is the maximum distance he can travel within one hour. Express this as L.P.P. and solve it graphically.
asked
Jan 27, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q28
math
0
votes
0
answers
(i) If a young lady drives her scooty at 30 km/hour, she had to spend Rs. 2.00 per km on petrol. If she drives at speed 50 km/h the petrol cost is Rs. 4.00 per km. She has Rs. 150 to spend on petrol and wants to describe the maximum distance she can travel within 2 hours. Express this as L.P.P and solve it graphically. (ii) Which mode of transport you suggest to a student and why?
asked
Jan 13, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q24
math
0
votes
0
answers
A furniture firm manufactures chairs and tables, each requiring the use of three machines A, B and C. Production of each chair requires 2 hours on machine A, 1 hour on machine B and 1 hour on machine C. Each table requires 1 hour each on machine A and B and 3 hours on machine C. The profit obtained by selling one chair is Rs. 30 while by selling one table the profit is Rs. 60. The total time available per week on machine A is 70 hours, on machine B is 40 hours and on machine C is 90 hours. How many chairs and tables should be made per week so as to maximise profit? Formulate the problem as LPP and solve it graphically.
asked
Jan 22, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q28
math
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