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Subject: Maths, asked on 30/9/13

In Triangle ABC ,Angle B=90 and BD perpendicular AC, if AC=9 cm and AD=3 cm then BD is equal to

1. 2√2 cm

2.3√2 cm

3. 2√3 cm

4. 3√3cm

Subject: Maths, asked on 21/12/15

in triangle ABC right angled at C altitude CH and median CM trisect the right angle. if the area of triangle CHM is k then the area of triangle ABC is

Subject: Maths, asked on 11/1/21

A surveyor wants to find out the height of a tower. He measures ?A as tan A= 3/4 . What is the height of the tower if A is 40 m from its base as shown in the figure?

Subject: Maths, asked on 22/2/21

find the number of terms in an ap 18, 15 ,12 .......- 48 and also find the sum of all its terms

Subject: Maths, asked on 11/1/21

In the school garden Ajay(A), Brijesh(B), Chinki(C) and Deepak(D) planted their flower plants
of Rose, Sunflower, Champa and Jasmine respectively as shown in the following figure. A fifth
student Eshan wanted to plant her flower in this area. The teacher instructed Eshan to plant
his flower plant at a point E such that CE: EB = 3 : 2.
Answer the following questions:
i. Find the coordinates of point E where Eshan has to plant his flower plant.

ii. Find the area of ECD.

iii. Find the distance between the plants of Ajay and Deepak.

iv. The distance between A and B is:

v. The distance between C and D is:

Subject: Maths, asked on 6/9/20

if alpha and 1/alpha are the zeros of the polynomial ax2+bx+c, then the value of c

Subject: Maths, asked on 12/2/15

on reversing the digits of a two digit number, number obtaned is 9 less than three times the original number. If difference of these two numbers is 45, find the original number

Subject: Maths, asked on 10/6/14

form a quadratic polynomial whose zeroes are 4 and 6

Subject: Maths, asked on 31/8/12

If α and β are the zeros of the quadratic polynomial f(x) = x2 - px + q, prove that a2/b2 + b2/a2 = p4/q2 - 4p2/q + 2

Given thatαandβare the zeroes of the quadratic polynomialf(x) =x2–px+q

In the given solution how did (a2 + b2)2 - 2a2b2 / a2b2 changed into [(a + b)2 - 2ab ]2 - 2(ab)2 / (ab)2
i didnt understand how -2a2b2/ a2b2 change to- 2(ab)2/ (ab)2 bcoz a2b2 and (ab)2 are two different things. I guess !!
i m confused..plzz help...

Subject: Maths, asked on 10/11/18

if A and B are two events such that P(AUB)= 5/6, P(AnB)=1/3, P(B')=1/2 then the events are
(a) dependent
(b) independent
(c) mutually exclusive 
(d) none of these 
( with explanation)

Subject: Maths, asked on 16/12/20

The shapes of the hockey court and the shooting range are square and
triangle respectively. Both of the courts have a common edge that touches the
centre of stadium. The construction of the shooting range is such that the angle
of centre is 60°. The radius of the stadium is 180 meters.

Subject: Maths, asked 5 days, 10 hours ago

If alpha and beta are the zeros of the polynomial 3x^2-4x+2, then which polynomial represents the polynomial whose zeroes are (1/alpha) and (1/beta)?

Subject: Maths, asked on 10/1/21

Shankar is having a triangular open space in his plot. He divided the land into three parts by
drawing boundaries PQ and RS which are parallel to BC.
Other measurements are as shown in the figure.
i. What is the area of this land?
ii. What is the length of PQ?
iii. The length of RS is
iv. Area of? APQ is?
v. What is the area of? ARS?

Subject: Maths, asked on 29/9/13

how to calculate mode if two classes have same and highest frequency (bimodal) ?

Subject: Maths, asked on 9/3/20

Solve for x (2x/x-5)? + (2x/x-5) - 24= 0 x not equal to 5

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