Recent questions and answers in Class 10

Why are components of the transport system highly organised in plants

asked Jan 24, 2019 by nagamaniramu1973

0 answers

If the angle of elevation of a cloud from a point h meteres above a lake is a and the angle of depression of its reflection in the lake be b, prove that the distance of the cloud from the point of observation is $\large\frac{2hsec \alpha}{tan \beta -tan \alpha}.$

answered Jan 15, 2019 by tkumawat035

1 answer

In the Figure $PQRS$ is a square laws with side $PQ= 42 meters$. Two circular flower beds are there on the sides $PS$ and $QR$ with center at $Q,$ the intersection of its diagonals. Find the total area of the two flower bed (shaded parts)

answered Jun 4, 2018 by phool0120

1 answer

Find the equation of the plane passing through the line of intersection of the planes $x+y+z-1=0$ and $x+4y+3z=0$ and parallel to the line $x-1=3y=3(z+1)$

answered May 23, 2018 by meena.p

1 answer

Find the shortest distance between two skew lines $ L_1: \large\frac{x-3}{2}=\frac{y+1}{4}=\frac{z-2}{-1}$ and $ L_2: \large\frac{x-3}{2}=\frac{y-2}{1}=\frac{z+2}{2}$ and obtain equations of two parallel planes $P_1$ and $P_2$ contain $L_1$ and $L_2$ respectively

asked May 18, 2018 by meena.p

0 answers

Find the value of k so that the area of the triangle with verices $(1,-1) , (-4,2k)$ and $(-k,-5)$ is 24 sq.units

answered Nov 26, 2017 by praveendaral123

1 answer

A card is drawn at random from a well -shuffled deck of playing cards . Find the probability that the card drawn is (i) A card of spade or an ace (ii) a black king (iii) neither a jack nor a king (iv) either a king or a queen

answered Jan 30, 2017 by thounaxorvillexingha

1 answer

How many terms of the series $54,51,48…$ is taken so that their sum is $513?$ Explain the double answer.

answered Aug 25, 2016 by kvcr37776

1 answer

The sum of three numbers in an $A.P.$ is $-3,$ and their product is $8$. Find the numbers [ ans: -4,-1,2 or 2,-1,-4]

answered Aug 25, 2016 by kvcr37776

2 answers

prove 3[AB+BC+AC]HOLE SQUARE=4[AD+BE+CF]HOLE SQUARE

answered Apr 30, 2015 by vijayalakshmi.r

1 answer

Find the value of k for which the points $A(k+1,2k) ,B(3k,2k+3) $ and $ c(5k-1,5k)$ are collinear .

answered Mar 18, 2015 by meena.p

1 answer

A truck covers a distance of $150 km$ at a certain average speed and then covers another 200 km at an average speed which is $20\;km/hr$ more than the first speed. If the truck covers the total distance in 5 hours, find the first speed of the truck?

answered Mar 18, 2015 by meena.p

1 answer

An arithmetic progression $5, 12,19....., $ has I st terms. Find its last term hence find the sum of its last 15 terms.

answered Mar 18, 2015 by meena.p

1 answer

A bag contains white, black and red balls only. A ball is drawn at random from the bag if the probability of getting a white balls is $\large\frac{3}{10} $ and that of black is $\large\frac{2}{5}$, then find the probability of getting a red balls. If the bag contains 20 black balls, then find the total number of balls in the bag.

answered Mar 18, 2015 by meena.p

1 answer

Find the coordinates of a point P on the line segment joining $A(1,2) $ and $B(6,7)$ Such that $AP= \large \frac{2}{5} $$AB$

answered Mar 18, 2015 by meena.p

1 answer

The 13th term of an A.P is four times its 3rd term . If its fifth term is 16, then find the sum of its first ten terms

answered Mar 18, 2015 by meena.p

1 answer

Solve the following quadratic equation for $x_i.\qquad x^2-2ax-(4b^2-a^2)=0$

answered Mar 18, 2015 by meena.p

1 answer