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Recent questions tagged 2008

Find the equation of the straight line through origin and passing through the intersection of lines $x-2y+3=0$ and $3x+5y+6=0$.

asked Apr 15, 2013 by sreemathi.v

0 answers

Find $x$ and $y$,if $x+y=\begin{bmatrix}7 & 0\\2 & 5\end{bmatrix}$ and $x-y=\begin{bmatrix}3 & 0\\0 & 3\end{bmatrix}$.

asked Apr 15, 2013 by sreemathi.v

0 answers

In a hostel 50% of the student read Hindi magazine, 40% read English magazine and 20% read both Hindi and English magazine. A student is selected at random. (a) Find the probability that student read English magazine only. (b) Find the probability that student reads neither English nor Hindi magazines. (c) Explain the role of newspapers / magazines to aware a student.

asked Dec 24, 2012 by thanvigandhi_1

0 answers

Using matrices, solve the following system of linear equations : $ \begin{array} xx + 2y - 3z = -4 \\ 2x + 3y + 2z = 2 \\ 3x - 3y - 4z = 11 \end{array} $

asked Dec 24, 2012 by thanvigandhi_1

0 answers

A catering agency has two kitchens to prepare food at two places A and B. From these place " Mid-day meal' is to be supplied to three different schools situated at P, Q, R. The monthly requirements of the schools are respectively 40, 40 and 50 food packets. A packet contains lunch for 1000 students. Preparing capacity of kitchen A and B are 60 and 70 packets per month respectively. The transportation cost per packet for the kitchen to school is given below. How many packets from each kitchen should be transported to school so that the cost of transportation is minimum? Also find the minimum cost.

asked Dec 24, 2012 by thanvigandhi_1

1 answer

The probability that a person will get an electric contract is \(\large \frac{2}{5}\) and the probability that he will not get plumbing contract is \( \frac{4}{7} \) . If the probability of getting atleast one contract is \( \large\frac{2}{3} \) . What is the probability that he will get both?

asked Dec 24, 2012 by thanvigandhi_1

0 answers

Find the area of the smaller region bounded by ellipse $ \large\frac{x^2}{a^2} + \frac{y^2}{b^2} $$= 1$ and the line $\large\frac{x}{a} + \frac{y}{b}$$ = 1 $

asked Dec 24, 2012 by thanvigandhi_1

0 answers

A point on the hypotenuse of a triangle is at distance 'a' and 'b' fro the sides of the triangle. Show that the minimum length of the hypotenuse is $ \bigg( a^{\large\frac{2}{3}} + b^{\large\frac{2}{3}} \bigg)^{\frac{2}{3}}. $

asked Dec 24, 2012 by thanvigandhi_1

0 answers

Evaluate : $ \int \:\large \frac{2\sin2\theta -\cos \theta}{6-\cos^\theta - 4\sin\theta}$$d\theta$

asked Dec 24, 2012 by thanvigandhi_1

0 answers

Find the foot of the perpendicular from ( 0, 2, 3 ) on the line \(\large \frac{x+3}{5} = \frac{y-1}{2} = \frac{z+4}{3}\). Also find the length of perpendicular.

asked Dec 24, 2012 by thanvigandhi_1

0 answers

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