Q NO 5 EXERCISE 13.1

Given that P 12, Q = 5 and R = 13 also P+Q=R, then the angle between P and Q will be

In Figure, two equal circles touch each other at T , if Q P=4. 5 c m , then Q R= (a) 9cm (b) 18cm (c) 15cm (d) 13.5cm

Volume & Surface area Ex : 13.1

If variance of 1, 3, 5, 7, …….. 215 is A^(2) then standard deviation of 1, 5, 9, 13, …..429 in terms of A is :

Arithmetic progression | class 10 | Exercise 5.1 |

Show that the point A (1,-1,3), B ( 2,-4,5) and C ( 5,-13,11) are collinear.

If [(2+x,3,4),(1,-1,2),(x,1,-5)] is a singular matrix then x is (A) 13/25 (B) -25/13 (C) 5/13 (D) 25/13

Find the Q_(1)andQ_(3) for the following distribution : 5, 3, 6, 3, 13, 9, 8, 24, 19, 20, 18.

A tangent P Q at a point P of a circle of radius 5 cm meets a line through the centre O at a point Q so that O Q=13 c m . Find the length of P Q .

Check validity of the following statement. (i) p : 125 is divisible by 5 and 7. (ii) q: 131 is a multiple of 3 or 11.