Question
Class 9
Dec. 3, 2017, 10:58 p.m.
Answer
If x bar is the mean of n observation x1,x2,......,xn them the mean of observation x1 -a, x2 -a,.....(xn -a) is x bar -a(or show if observation is decreased by a, then the mean is also decreased by a
Class 9
Nov. 25, 2017, 8 p.m.
Answer
ABCD Is a rhombus and P, Q, R and S are the mid points of the sides AB, BC, CO, and DA respectively. Show that the quadrilateral PQRS is a rectangle
Class 9
Nov. 22, 2017, 9:31 p.m.
Answer
If circles are drawn taking two sides of a triangle as diameters, prove that the point of intersection of these circles lie on the third side.
Class 9
Nov. 22, 2017, 6:33 p.m.
Answer
A traffic signal board indicating school ahead is an equilateral triangle with side a. Find the area of the signal board using herons formula if its perimeter is 130 cm . What will be the area of signal board?
Class 9
Nov. 18, 2017, 10:10 p.m.
Answer
What is the proof of theorem- If the angles subtended by the chords of a circle at the centre are equal, then chords are equal
Class 9
Nov. 15, 2017, 5:22 p.m.
Answer
Can u plz give me sample question papers of Mathematics NCERT of class ninth
Class 9
Nov. 14, 2017, 8:27 p.m.
Answer
If the diagonal of a quadrilateral bisect each other, then it is a parallelogram
Class 9
Nov. 13, 2017, 8:33 p.m.
Answer
ABCD is parallelogram and P is a point on BC
Prove: ar(tringle ABP)+ar(tringle DPC)=ar(tringle APD)
Class 9
Nov. 11, 2017, 9:55 p.m.
Answer
Parallelogram abcd and rectangle abef have the same base ab and also have equal areas.show that the perimeter of the paralellogram is greater than that of the rectangle
Class 9
Nov. 10, 2017, 6:07 a.m.
Answer
You written wrong in question 7 you had written h=14 but in the formula of volume of graphite you put wrong value 140 why
Class 9
Nov. 3, 2017, 4:56 p.m.
Answer
Find the area of clothes requaired to cover the tent as shown in the figure ,also.find the total cost of clothes at the rate of Rs.100 per square meter..
Class 9
Oct. 24, 2017, 6:26 p.m.
Answer