Question

In trapezium ABCD, AB is parallel to CD.P and Q are the midpoints of AD and BC respectively. If AB=X + 15 and CD = X + 9.find PQ

Line through the points (2, 6) and (4, 8) is perpendicular to the line through the points (8, 12) and (x, 24). Find the value of x.

 Find the centre and radius of the circles : 2x^2+2y^2-x=0

 will GST on Advances received  between Nov 1 to nov 15 ,2017 be paid.pls advise 

ThANKS & rEGARDS

DEVENDER KUMAR TYAGI

Sir,  in triangle ABC and triangle PQR,  the medians are CM and RN resp. So,  can angle M and angle N be 90degree?

surface areas and volume for class 9th

Find the valueof k for  which  the pair of linear equations kx+y=k^2 and x+ky=1 has infinitely  many solutions 

A sphere , a cylinder and a cone are of the same radius and same height . Find the ratio of their curved surfaces.

The slant height of a cone is 10 cm and the radius of it's base is 7 cm . what is its curved surface area

integrate xsin^-1(x^2)/√1-x^4

Wich term of the seres 1/3+1/9+1/27.. . . . . . . Is 1/19683