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If the a=50,d=-4 and Sn =0 then find n.

Posted by Ayush Kumar 1 year, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Deepali Vishnoi 1 year, 8 months ago

The distance between the points (0,2/5)and (-2/5,0)is

Shuhbham Mahakud 1 year, 8 months ago

Sn = n/2 [2a + (n-1)d] Substituting values :- 0 = n/2 [2(50) + (n-1)(-4)] 0 = n/2 [100 - 4n + 4] 0 = n/2 [104 - 4n] 0 = n/2 × 4 [ 26 - n ] 0 = 2n [ 26 - n ] 0 = 26 - n - 26 = - n 26 = n. This should be the answer according to me.

Its Vicky 1 year, 8 months ago

Sn = n/2 [2a + (n-1)d] Substituting values :- 0 = n/2 [2(50) + (n-1)(-4)] 0 = n/2 [100 - 4n + 4] 0 = n/2 [104 - 4n] 0 = n/2 × 4 [ 26 - n ] 0 = 2n [ 26 - n ] 0 = 26 - n - 26 = - n 26 = n. This should be the answer according to me.

ANSWER

Write down the LCM of the following polynomial: (x-1)(x-2) and (x-2)(x-7)

Posted by Nitin Kumar 1 year, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Akanksha Kumari 1 year, 8 months ago

(x-1) (x-2) (x-7)

Stanzin Lhadon 1 year, 8 months ago

(x-2)(x-7)(x-1)

Aditya Sinha 1 year, 8 months ago

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ANSWER

Write down the LCM of the following polynomial: (x-2)(x-2) and (x-2)(x-7)

Posted by Nitin Kumar 1 year, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Sarthak Malviya 1 year, 8 months ago

LCM will be (x-2)(x-2)(x-7)

Sarthak Malviya 1 year, 8 months ago

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Ritika Chauhan 1 year, 8 months ago

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ANSWER

The pair of equations x=a and y=b graphically represent lines which are

Posted by Tanu Mishra 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Raunak Singh 1 year, 8 months ago

Intersecting at point (a,b)

ANSWER

The longest diameter of a cone can be fully fitted in a cube of edge 8 cm is

Posted by Harini Sree 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

S. Youthish Kumar 1 year, 8 months ago

8

Raunak Singh 1 year, 8 months ago

8 cm of diameter can be fitted with a height of 8 cm

ANSWER

If a and b are the roots of equation x² - 2 find a³ - b³

Posted by Pau James 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Sarthak Malviya 1 year, 8 months ago

A=-2or2 and b=2or-2 then answer is -16 or 16

S. Youthish Kumar 1 year, 8 months ago

0

ANSWER

If zeros of the polynomial X square + 4 x + 2 are alpha and 2 by Alpha then find the value of a

Posted by Vishnu Adduri 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Sin 30 +tan45/sec30 + cot45

Posted by Siju Divy 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Ritika Chauhan 1 year, 8 months ago

Solution - Sin30° = 1/2 , tan 45° = 1 , sec 30° = 2/√3 , cot45° = 1 = 1/2 + 1 ÷ √3/2 + 1 = 1+2 / 2 ÷ √3 + 2 / 2 = 3 / 2 × 2 / √3 + 2 = 3 / √3 + 2 = √3 × √3 / √3 + 2 = √3 / 2 = Sin 60° answer I hope this is helpful to you...~

Kavya Rajvanshi 1 year, 8 months ago

1/2+1÷ 2/√3+1 = 1+2/3 ÷ 2+√3/2√3 = 3√3(2-√3)/2 is a answer

ANSWER

the diagram shows a grid of number squares a small marble is placed in first square a fair die is thrown if 145 or 6 turns up then marble is moved one square to the right if two or three turns up then marble is moved

Posted by Vaishali Limanpure 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the ratio in which the line segment joining the points (-3,10) and (6,-8)is divided by (-1,6)

Posted by Parimal Katpatal 1 year, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Sai Pansare 1 year, 8 months ago

Let the ratio in which the line segment joining A(- 3, 10) and B(6, - 8) be divided by point C(- 1, 6) be k : 1. By Section formula, C(x, y) = [(mx₂ + nx₁) / m + n, (my₂ + ny₁) / m + n] m = k, n = 1 Therefore, - 1 = (6k - 3) / (k + 1) - k - 1 = 6k - 3 7k = 2 k = 2 / 7 Hence, the point C divides line segment AB in the ratio 2 : 7.

Raunak Singh 1 year, 8 months ago

2:7

Parimal Katpatal 1 year, 8 months ago

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ANSWER

In the adjoining figure, DE||BC .The value of X is

Posted by Sushmita Chauhan 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

1+tan²A /1+cot²A=sec²-1 prove

Posted by 👿 B Basava 😈 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Shuhbham Mahakud 1 year, 8 months ago

TO PROVE:-(1+tan²A)/(1+cot²A) = sec²A-1 =>(1+tan²A)/(1+1/tan²A){ we know that cot²A = 1/tan²A } =>(1+ tan²A)/ {(tan²A + 1)/tan²A} =>{(tan²A)(1+ tan²A)}/ (tan²A+ 1) => tan²A => sec²A-1 { from the identity sec²A-tan²A = 1}

Shagun Sehra 1 year, 8 months ago

TO PROVE:-(1+tan²A)/(1+cot²A) = sec²A-1 =>(1+tan²A)/(1+1/tan²A){ we know that cot²A = 1/tan²A } =>(1+ tan²A)/ {(tan²A + 1)/tan²A} =>{(tan²A)(1+ tan²A)}/ (tan²A+ 1) => tan²A => sec²A-1 { from the identity sec²A-tan²A = 1}

ANSWER

Probe that cos^2A+1/1+cot^2A=1

Posted by Muskaan Muskaan 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In AABC, if LADE = B, then prove that AADE ~ AABC. Also, if AD =7.6 cm, AE = 7.2 cm, BE 4.2 cm and BC = 8.4 cm, find DE

Posted by Muskaan Muskaan 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

if two coconut tree 15 m and 25 meter high are 70 metre apart from then find the height of point of intersection of line joining the top of each tree to foot of opposite tree

Posted by Aditya Raj 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Why π is irrational

Posted by Ashwani Tyagi 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Utkarsh Shrivastava 1 year, 8 months ago

Because it has non terminating ana non repeating decimal expansion

ANSWER

Solve mx-ny=m²+n²,x+y=2m

Posted by Happy Sharma 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Shagun Sehra 1 year, 8 months ago

x = m + n y = m - n

ANSWER

. In a survey, it is found that every fifh person has a vehicle. The probability of a person NOT having a vehicle, is

Posted by Tannu Kumari 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Monu Kumar 1 year, 8 months ago

4/5

ANSWER

In the triangle pqr ab is parallel to QR ifpa equals to 2.4 cm aq equals to 3.6 CM PB = 3.2 CM BR equals to 4.8 cm and ab = 2 cm find QR

Posted by Fjak Nka 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Kuldeep Mallick 1 year, 8 months ago

0.4

Fjak Nka 1 year, 8 months ago

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ANSWER

2xsquare -41x+210

Posted by Manit Mathur 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Raunak Singh 1 year, 8 months ago

x= 10 or x= 21/2

ANSWER

In the given figure, ABCD is a parallelogram. AE divides the line segment BD in the ratio 1 : 2. If BE = 1.5 cm, then find the length of BC

Posted by Vedant Mishra 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The area of a sector of a circle whose radius is r and length of arc is l units is

Posted by Mahika Deshpande 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Kaushik Verma 1 year, 8 months ago

1/2×l×r

ANSWER

Prove that (Tan theta + Sin theta)^2 - (Tan theta - Sin theta)^2.

Posted by Parakram Singh 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Manoj Kumar 1 year, 6 months ago

(Tan theta)^2 - (sin theta)^2

Yug Purohit 1 year, 8 months ago

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ANSWER

1 - cos theta upon 1 + cos theta root is equal to cos sec theta minus cos theta

Posted by Rishabh Agarwal 1 year, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If cos(A-B) = sin (A+B)=1 find A and B

Posted by Vanshika Gupta 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Vedansh Tiwari 1 year, 8 months ago

sin(A+B) = 1 sin(A+B) = sin90 A+B = 90 [equation 1] cos(A-B) = 1 cos(A-B) = cos 0 A-B = 0 [equation 2] add equation (1) and (2) we get 2A=90 A=45o put the value of A in equation (2) A-B=0 45-B=0 B=45o A=B=45o

ANSWER

Prove that x ^ 2 + 6x + 10 has no real zero.

Posted by Pushpender Singh 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Alfiya💫💫💫 . 1 year, 8 months ago

D =b²-4ac.. =6²-4x1x10 =36-40 -4 D<0 hence it has no real root..

ANSWER

you went to the fish market to buy fish. There were two sizes of fish available. The fisherman said that the total price of the smaller fish is 3 times the total price of the bigger fish. Also, the total money that you bought from your home is Rs.100. Can you find out how much you spent on buying the two types of fish?

Posted by Vignesh Gangadi 1 year, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Palak Siwach 1 year, 8 months ago

Cost of smaller fish =25 ₹ Cost of bigget fish =75₹

ANSWER

If sinx + cosecx =2 , then sin power 19 + cosecx power19 is

Posted by Varshaa Rbm 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Lucky Sharma 1 year, 8 months ago

Answer is 2 sin x + 1 sinx = 2sin2x + 1 = 2 sin x (sinx - 1)²= 0 ⇒ sin x = = 1 cosec x = 1 in 19 x + cosec20 x = 1+1=2

Lucky Sharma 1 year, 8 months ago

1

ANSWER

A chord pq of a circle of radius 10 cm subtends an angle of 60 at centre of cricle. Find the area of tha major and minor segment

Posted by Poorvi Raghuwanshi 1 year, 8 months ago

CBSE > Class 10 > Mathematics

4 answers

Palak Siwach 1 year, 8 months ago

Area of minor segment is 10.87 cm² and area of major segment is 3132.1cm²

Arush Negi 1 year, 8 months ago

55/6

Arush Negi 1 year, 8 months ago

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Arush Negi 1 year, 8 months ago

55

ANSWER

3x+7

Posted by Pranvi Mahajan 1 year, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Varshaa Rbm 1 year, 8 months ago

Is this what u asked for??

Varshaa Rbm 1 year, 8 months ago

X=-7/3

ANSWER

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