Recent questions tagged maths

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1 answer 297 views

if x is a poisson variate such that p(x=1)= p(x=2) find e(x^2)

asked Apr 30, 2023 in Engineering Maths 4 by Doubtly (98.9k points)

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0 answers 394 views

The speed of light in a vacuum is 299,792,458 meters per second.

asked Aug 5, 2022 in Chemical Reactions and Equations by Ankur maurya

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1 answer 761 views

In the adjoining figure, seg QR is a chord of the circle with centre O. P is the midpoint of the chord QR.

asked Jul 9, 2022 in Circle by Doubtly (98.9k points)

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1 answer 391 views

What is the distance between two parallel tangents of a circle having radius 4.5 cm? Justify your answer.

asked Jul 9, 2022 in Circle by Doubtly (98.9k points)

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1 answer 450 views

In the adjoining figure, O is the centre of the circle. From point R, seg RM and seg RN are tangent segments

asked Jul 9, 2022 in Circle by Doubtly (98.9k points)

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1 answer 740 views

In the adjoining figure, the radius of a circle with centre C is 6 cm, line AB is a tangent at A.

asked Jul 9, 2022 in Circle by Doubtly (98.9k points)

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0 answers 374 views

Without actual division find whether 18/30 will have a terminating decimal expansion or a non-terminating repeating

asked Apr 2, 2022 in maths by Doubtly (98.9k points)

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1 answer 866 views

A triangle has a vertex at (1, 2) and the mid points of the two sides through it are (-1, 1) and (2, 3). Then the centroid of this triangle is:

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 809 views

A plane which bisects the angle between the two given planes 2x – y + 2z – 4 = 0 and x + 2y + 2z – 2 = 0, passes through the point :0

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 941 views

The general solution of the differential equation (y^2 – x^3 )dx – xydy = 0 (x ≠ 0) is :

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 904 views

If the cost of bananas is increased by Rs. 10 per dozen, one can get 3 dozen less for Rs.600.

asked Apr 8, 2021 in maths by Doubtly (98.9k points)

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1 answer 428 views

Find the first two terms of the sequence for which Sn is given below Sn=n^2 (n+1)

asked Apr 8, 2021 in maths by Doubtly (98.9k points)

+1 vote

1 answer 438 views

The greatest coefficient in the expansion of (1+x) 2n+2 is

asked Mar 27, 2021 in Uncategorized by Doubtly (98.9k points)

+2 votes

1 answer 441 views

The number of solution of the equation x+2tanx=π/2 in interval [0,2π] is

asked Mar 22, 2021 in Uncategorized by anonymous

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1 answer 1.2k views

A and B each have certain number of oranges. A says to B, "if you give me 10 of your oranges, I will have twice the number of oranges left with you.

asked Mar 10, 2021 in maths by anonymous

+1 vote

1 answer 425 views

The sum of all values of θ ∈ (0, π/2) satisfying sin2 2θ + cos4 2θ = 3/4 is

asked Mar 10, 2021 in Uncategorized by Doubtly (98.9k points)

+1 vote

1 answer 480 views

If 5(tan 2 x−cos 2 x)=2cos2x+9, then the value of cos4x is

asked Mar 9, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 426 views

p and q are the points on the sides AB and AC respectively of a triangle ABC,

asked Mar 3, 2021 in maths by Doubtly (98.9k points)

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1 answer 618 views

Solve the following equations by Cramer’s method i. 7x + 3y = 15; 12y - 5x = 39

asked Mar 2, 2021 in maths by Doubtly (98.9k points)

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1 answer 462 views

A person standing on the bank of the river observes that the angle of elevation of the top of a tree

asked Feb 28, 2021 in maths by Doubtly (98.9k points)

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