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

Euclids division algorithm states that for every two positive integers a and b there unique exist q and r such that a=bq+r,where 0<or =r<b In words it means Dividend =divisor ×quotient + remainder

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Tan^2 A/tan^2A -1 + cosec^2A / sec^2A - cosec^2 A = 1 / 1-2cos^2A

Posted by Shubhankar Ambasta 5 years, 3 months ago

CBSE > Class 10 > Mathematics

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Practice paper solutions chapters 4 quadratic equations

Posted by Dinesh Lohia 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

? Pranali.A.P ? 5 years, 5 months ago

Available in this app?plz?thoda ksht kre ?

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Chapter 4 quadratic equations practice paper solutions

Posted by Dinesh Lohia 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

? Pranali.A.P ? 5 years, 5 months ago

Available in this app ?plz ? thoda ksht kre?

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Find the nature of the roots of the eqn 4x2-12x-9=0 Any help ,then thankyou?

Posted by Bilquees Ahmed 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Lucifer ? Morningstar? 5 years, 5 months ago

D=(-12)²-4×4(-9) => 144+144= 288. So it's nature is real and equal

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{(318)^82×(117)^63×(316)^58} find the once place of these.

Posted by Drift? Boi? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

5 answers

? Pranali.A.P ? 5 years, 5 months ago

????

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Drift? Boi? 5 years, 5 months ago

????

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? Pranali.A.P ? 5 years, 5 months ago

Jo hukum mere aaka ?

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Drift? Boi? 5 years, 5 months ago

Kyu pata karo.

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? Pranali.A.P ? 5 years, 5 months ago

I don't know ??

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A dice is thrown to two times so what is the probability

Posted by Patel Sangita 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

? Pranali.A.P ? 5 years, 5 months ago

When a die is thrown 2 times, the possible no. of outcomes = 6×6 = 36 . Out of these 36 cases only two cases are favorable for the happening of the event I.e. getting the sum 11 and these two cases are (5, 6) & (6, 5) . Therefore required probability = 2/36 = 1/18 .

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Parth Alase 5 years, 5 months ago

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solve by reducing method 4 by x + 3y = 14 and 3 by x - 4y = 23

Posted by Himanshu Jha 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 5 years, 5 months ago

4/x + 3y=14 and 3/x - 4y=23

Let 1/x = m,

4m + 3y = 14...(1)

and 3m - 4y = 23 ... (2)

Multiply (1) by 4 and (2) by 3, we get

16m + 12y = 56 ... (3) and 9m - 12y = 69 .... (4)

Adding (3) and (4), we get

25m = 125

→ m = 5

From (1),

4(5) + 3y = 14

→ 3y = 14 - 20

→ y = -2 and m = 1/x = 5 → x = 1/5

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? Pranali.A.P ? 5 years, 5 months ago

x=1/5, y=-1

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10x-1/x=3,x=0

Posted by ? Pranali.A.P ? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Mohit Saini 5 years, 5 months ago

10×3 (x=3) 10×3-1=29 10×0(x=0) 10×0-1=-1

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Solve by elimination method : x + y = 5 and 2x - 3y = 4

Posted by Harshit Mahar 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Virsan Edage 5 years, 5 months ago

Y=6/5 and X=19/5

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Lucifer ? Morningstar? 5 years, 5 months ago

Multiply EQ (१) by 2 and subtract eq(२) , 2x+2y-2x+3y=१0-4 | | 5y=6 => y=6/5 then x=19/5

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Prove 3 is an irational

Posted by Jashan Choudhary 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Gaurav Seth 5 years, 5 months ago

Let us assume that √3 is a rational number.

then, as we know a rational number should be in the form of p/q

where p and q are co- prime number.

So,

√3 = p/q { where p and q are co- prime}

√3q = p

Now, by squaring both the side

we get,

(√3q)² = p²

3q² = p² ........ ( i )

So,

if 3 is the factor of p²

then, 3 is also a factor of p ..... ( ii )

=> Let p = 3m { where m is any integer }

squaring both sides

p² = (3m)²

p² = 9m²

putting the value of p² in equation ( i )

3q² = p²

3q² = 9m²

q² = 3m²

So,

if 3 is factor of q²

then, 3 is also factor of q

Since

3 is factor of p & q both

So, our assumption that p & q are co- prime is wrong

hence,. √3 is an irrational number

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Harshit Mahar 5 years, 5 months ago

3 is rational

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Lucifer ? Morningstar? 5 years, 5 months ago

3 is not irrational number

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Draw 90 deegre angle

Posted by Urvashi Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Gaurav Seth 5 years, 5 months ago

Constructing a 90º Angle

We can construct a 90º angle either by bisecting a straight angle or using the following steps.

Step 1: Draw the arm PA.
Step 2: Place the point of the compass at P and draw an arc that cuts the arm at Q.
Step 3: Place the point of the compass at Q and draw an arc of radius PQ that cuts the arc drawn in Step 2 at R.
Step 4: With the point of the compass at R, draw an arc of radius PQ to cut the arc drawn in Step 2 at S.
Step 5: With the point of the compass still at R, draw another arc of radius PQ near T as shown.
Step 6: With the point of the compass at S, draw an arc of radius PQ to cut the arc drawn in step 5 at T.
Step 7: Join T to P. The angle APT is 90º.

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.. .... 5 years, 5 months ago

(Hii) Urvashi aap 10th class me aagi ho or 90 degree angle drow karna nahi janti ho kya???

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Lucifer ? Morningstar? 5 years, 5 months ago

Use a protector, point out at 90° and draw a line ,u got ur answer

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Find the cubic polynomial with sum,sum of product of its zeros taken two at a time, and product of its zeros as 3,-1 and -3 respectively.

Posted by The Vyrl Show 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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Find the smallest number which when divided by 30 and 40 and 60 leaves the remainder 7 in each case

Posted by Nikhil Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Lucifer?? Morningstar?? 5 years, 5 months ago

127

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Find the smallest number which when divided by 30 40 and 60

Posted by Nikhil Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Virsan Edage 5 years, 5 months ago

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The 8 th term of AP is -23 and its 12 term is -29find the AP

Posted by Pranav Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Anil Kumar 5 years, 5 months ago

Right answer

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Lucifer ? Morningstar? 5 years, 5 months ago

Let the first term be a and common difference be d. A/q a+7d=-23 ....(१) and a+11d=-२9....(२) equate both equation then, d=-3/2 and first term is -67/2

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How many terms of the AP 26,21,16,11,.... are needed to give the sum 11?

Posted by Lucifer?? Morningstar?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 5 months ago

'a' or the first term=26
and 'd' or the common difference =21-26=-5
n=?
Sum of n terms of A.P=11
Sum of n terms of A.P=n/2(2a+(n-1)d
11=n/2(52-5n+5)
22=n(57-5n)
22=57n-5n2
5n2-57n+22=0
By splitting the middle term,
5n2-55n-2n+22=0
5n(n-11)-2(n-11)=0
(5n-2)(n-11)=0
n-11=0
n=11

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1hour contai how many seconds

Posted by Anushka ?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

5 answers

Virsan Edage 5 years, 5 months ago

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? Pranali.A.P ? 5 years, 5 months ago

Koi na ?

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Anushka ?? 5 years, 5 months ago

Thanks

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? Pranali.A.P ? 5 years, 5 months ago

Seconds

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? Pranali.A.P ? 5 years, 5 months ago

3600

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find tan P cot R .is tan P=cotR

Posted by Sumit Sabar 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

? Pranali.A.P ? 5 years, 5 months ago

using Pythagoras law we got QR² = PR² - PQ² => QR = √ PR² - PQ² => QP = √ ( 13 )² - ( 12 )² => QP = √ 169 - 144 => QP = √25 => QP = 5 .°. tan P = QR/PQ tan P = 5/12 and Cot R = QR/PQ Cot R = 5/12 now tan P - Cot R = 5/12 - 5/12 = 0 answer is nothing means 0 ! xD

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✍️Find the value of p for which on root of quadratic equation px2-14x+8=0 is 6 times the other ???

Posted by ? Pranali.A.P ? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

? Pranali.A.P ? 5 years, 5 months ago

Thanks ??

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Drift? Boi? 5 years, 5 months ago

px^2-14x+8=0 let a and b be the roots of the equation b=6a sum of roots = -b/a product of roots = c/a here a=p , b=-14 , c=8 a+b=14/p ab=8/p a+6a=14/p 7a=14/p a=2/p a*6a=8/p 6a^2=8/p 3a^2=4/p 3*(2/p)^2=4/p 3*4/p^2=4/p p=3

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the 10 th term of the sequence whose nth term is given by an= 11n^2+5n/n^2

Posted by Ishaan Jhamb 5 years, 5 months ago

CBSE > Class 10 > Mathematics