CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

total no of cards =52 total no of black queen=2 therefore probability of a getting a black queen = total no of possible outcomes/total no of outcomes =2/52 or 1/26 [ANSWER]

0Thank You

Aadya Singh ? 6 years, 3 months ago

1/26.

4Thank You

ANSWER

Cos^4A - Cos^2 = sin^4 - sin^2A

Posted by Piyush Mishra 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Piyush Mishra 6 years, 3 months ago

Thanks brother

0Thank You

Deep Singh 6 years, 3 months ago

Cos ^4 A - cos ^2 A = (cos^2 A)^2 - cos^2 A = cos^2 A (cos ^2 A - 1) = - cos^2 A(1-cos^2A) =- cos^2 A * sin^2 A =- (1- sin^2 A)*sin^2 A = (sin^2 A - 1)*sin^2 A = sin^4 A - sin^2 A Hence, proved

1Thank You

ANSWER

In polynomial exercise 2.2 how 3x2-x_4=12x2

Posted by Keerthana Devarakonda 6 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Deep Singh 6 years, 3 months ago

The zeroes are 4/3 and -1. The relation between zeroes and coefficient are α+β=4/3+(-1)=-1/3=-(coefficient of x) /(coefficient of x^2) αβ=4/3*(-1)=-4/3=(constant term)/(coefficient of x^2).

0Thank You

Deep Singh 6 years, 3 months ago

The zeroes are 4/3 and -1. Relation between zeroes and coefficient are α+β=4/3+(-1)=-(coefficient of x) / (coefficient of x^2) αβ=4/3*(-1)=(constant term) /coefficient of x^2)

0Thank You

Deep Singh 6 years, 3 months ago

Puchna kya chahte ho bhai aap???

0Thank You

ANSWER

Ho to draw instructions

Posted by Mohd. Kazim 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Miss. 1234 6 years, 3 months ago

instructions nhii constructions hota h??

0Thank You

ANSWER

BPT. Theorem

Posted by Shreya Tiwari 6 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Nitin Bhardwaj 6 years, 3 months ago

If a line is drawn parallel to one side of triangle to intersect the other two sides in distinct point the other two side are divider in the same ratio

0Thank You

☺ ............. 6 years, 3 months ago

Basic Proportionality Theorem was first stated by Thales, a Greek mathematician. ... Basic Proportionality Theorem (can be abbreviated as BPT) states that, if a line is parallel to a side of a triangle which intersects the other sides into two distinct points, then the line divides those sides in proportion.

2Thank You

Ankesh ..?? Ready To My First Fly? 6 years, 3 months ago

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct point s,the other two sides are divided in the same ratio.

4Thank You

ANSWER

If a and b are the zeroes of polynomial x^2-5x+m such that a-b=1, find m.

Posted by Neetu Singh 6 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Prithvi Raj Singh 6 years, 3 months ago

The value of m=6

1Thank You

Arun Kirar 6 years, 3 months ago

The value of. m is equal to 6

1Thank You

Aadya Singh ? 6 years, 3 months ago

The value of m is 6.

4Thank You

ANSWER

Kisi ne maths or sci ka new pattern of question paper dekha h plz batoo n

Posted by Ankesh ..?? Ready To My First Fly? 6 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Aadya Singh ? 6 years, 3 months ago

Check the sample papers....

3Thank You

Ankesh ..?? Ready To My First Fly? 6 years, 3 months ago

Plz tell me about this sis

1Thank You

Aaliya ? 6 years, 3 months ago

Hmm dekha hai..

3Thank You

ANSWER

Google me alg sample papr h maths ka or cbse guide app me alg hai kon sa sahi h plz tell me or google sample papr k solution kha mileng maths ke plzzzzzz tell me

Posted by Shubham Rawat 6 years, 3 months ago

CBSE > Class 10 > Mathematics

7 answers

Shubham Rawat 6 years, 3 months ago

Ap loose word kyu use kre ho Aadya singh

0Thank You

Aadya Singh ? 6 years, 3 months ago

Ya to phir google wala official website ni hoga...to galat hoga....bcz maine jo google pe dekha tha...vahi yha pe bhi h...basic ka mujhe ni pta....but standard wala vahi h...

1Thank You

Aadya Singh ? 6 years, 3 months ago

Kaun da dekh rhe h...2 sample paper h - Standard and basic.

1Thank You

Shubham Rawat 6 years, 3 months ago

Nhi h same

1Thank You

Aadya Singh ? 6 years, 3 months ago

Nahi...sample paper to same h....?

4Thank You

Shubham Rawat 6 years, 3 months ago

What cbse

1Thank You

Aaliya ? 6 years, 3 months ago

Cbse ka...

2Thank You

ANSWER

Prove that the perpendicular at the point of contact to the tangentto a circle passes through the centre

Posted by Anup Bamal 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

R. Chinmayee 6 years, 3 months ago

Sry ya wrong answer

0Thank You

R. Chinmayee 6 years, 3 months ago

Given:-ABCD is a quadrilateral circumscribing a circle with centre O. To prove:-angle AOD+angle BOC=180&angle AOB+angle BOD=180. Construction:-Join OP,OQ,OR&OS. Proof

0Thank You

ANSWER

Exercise 13.2 7

Posted by Basil Biju 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Sonu Army 6 years, 3 months ago

2and 4

0Thank You

ANSWER

(cosQ-sinQ)/(cosQ+sinQ)=(1-√3)/(1+√3)

Posted by Mohd. Shahid 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years, 3 months ago

Pura question kya hai? Kuch prove krna hai ya Kuch find krna hai?

1Thank You

ANSWER

Show that (CosQ-sinQ)/ (cosQ+sinQ)=(1-√3)/(1+√3).

Posted by Mohd. Shahid 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The surface area of sphere and cube are equal then find the ratio of their volumes?

Posted by Afsar Sohail 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years, 3 months ago

Surface area of sphere = 4πr^2 Surface area of cube =4a^2 Atq, 4πr^2=4a^2 =>πr^2=a^2 =>a=r√π Volume of sphere /volume of cube =4/3πr^3/a^3 =4/3πr^3/r^3π√π =4/3√π =4:3√π

3Thank You

ANSWER

Find the mean of first five prime numbers?

Posted by Rahul Sheokand 6 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Deep Singh 6 years, 3 months ago

5.6

0Thank You

Sahil ??? 6 years, 3 months ago

5.6

1Thank You

Yogita Ingle 6 years, 3 months ago

First five prime numbers are 2, 3, 5, 7 and 11.

The mean or the average formula is = Sum/no. = (2 + 3 + 5 + 7 +11)/5 = 5.6.

1Thank You

Arpit Maurya 6 years, 3 months ago

Sorry 2

0Thank You

Arpit Maurya 6 years, 3 months ago

2.5

1Thank You

ANSWER

Find the roots of the quadric equation /2×"+7+/2=0

Posted by Harshit Harshit 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years, 3 months ago

Question kya h bhai aapka??

0Thank You

ANSWER

in a right triangle pqr where is the hyper tennis of length 20 cm and angle b is equal to 60 degree the area of the triangle is

Posted by Sangeeta Singh 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Arpit Maurya 6 years, 3 months ago

20√3

0Thank You

ANSWER

If the sum of the third and the eighth term of an AP is 7 and the sum of the seventh and fourteenth term is -3 find the tenth term

Posted by Meera Savatha 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Deep Singh 6 years, 3 months ago

a+2d+a+7d=7 =>2a+9d=7--------[1] a+6d+a+13d= -3 =>2a+19d= -3 ---------[2] On subtracting 1 and 2, -10d =10 ,therefore d=-1 Now putting the value of d in eq. 1,we get, a=8. Therefore,10th term= a+9d = 8+9(-1) =-1 Since, 10th term = -1.

0Thank You

Sushant Singh 6 years, 3 months ago

a10= -1.

1Thank You

ANSWER

A window of a house is 'h'metre above the ground from the window the angle of the elevation and depression of the top and the bottom of another house situated on the opposite side are found to be alpha and beeta respectively.Proof that the height of the other house is h(1+tan alpha × cot beeta)

Posted by Meera Savatha 6 years, 3 months ago

CBSE > Class 10 > Mathematics