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Find the sum of following A.P (I)2,7,12,...........,to 10 terms

Posted by Yashwant Yadav 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Yashwant Yadav 5 years, 1 month ago

Thanks

0Thank You

Adarsh Awasthi 5 years, 3 months ago

a=2,,,,,,,,,,,, d=5 ..................................... l=a+(n-1) d ====....... 2+(10-1) 5======= .. 2+9×5====....2+45=47 .,...................................... Sn=n/2×(a+l) ====10/2*[2+47]========5*49=====245

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Aastha Malik 5 years, 2 months ago

Common difference =7-2=5 First term(a)=2 An=10 S=n/2[2a+(n-1)d S=10/2{2(2)+(10- 1)5 S=5{4+9(5)} S=5{4+45} S=5(49) S=245

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Ranapratap Pande 5 years, 3 months ago

a=2 d =5 n=10 Sn=? Sn=n/2 [2a+(n-1)*d] Sn=10/2[2*2+(10-1)*5)] Sn=5[4+9*5] Sn=5[4+45] Sn=5[49] Sn=245.

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How many natural numbers between 5 and 995 are divisible by 6?

Posted by Swati Dahiya 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Anmol Gupta 5 years, 3 months ago

165

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Yashwant Yadav 5 years, 3 months ago

Sorry I don't know

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ANSWER

Justify, cube root of 64 is not an irrational number

Posted by Megha Kulagod 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Daniya Khan 5 years, 3 months ago

No chance it's not irrational

1Thank You

Gargi Nawghade 5 years, 3 months ago

Cube root of 64 = 4 , which is rational number

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All decimal numbers are not rational numbers and all rational numbers are not decimal numbers justify your answer

Posted by Megha Kulagod 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Amrita Kumari 5 years, 3 months ago

5.876876...............is a decimal number but not rational. And 5 is rational but not decimal number.

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All decimal numbers are real numbers but all real numbers are not decimal numbers justify your answer

Posted by Megha Kulagod 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

3.27¯¯¯¯¯3.27¯ is

Posted by Abhishek Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

https://drive.google.com/file/d/1C572cK7gLNe_NvcuYWljc58v6pahP8wO/view?usp=drivesdk

Posted by T.Karthi Xc 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

*For ax²+bx+ c = 0, which of the following statement is wrong? •If b²-4ac is a perfect square, the roots are rational. •If b²=4ac , the roots are real and equal. •If b²=4ac , the roots are real and unequal. •If b²-4ac is negative, no real roots exist.

Posted by Chandankumar E Agasibagil 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Gargi Nawghade 5 years, 3 months ago

Statements which is wrong - if b²=4ac,the roots are real and unequal.

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Gargi Nawghade 5 years, 3 months ago

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ANSWER

The 6th term of an A.P is -10 and its 10th term is -26. Determine the 15th term of an A.P

Posted by Nivedita Ghumare 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Nivedita Ghumare 4 years, 10 months ago

Thanks

1Thank You

Diksha Rai 5 years, 3 months ago

It's - 46

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Asheesh Rajput 5 years, 3 months ago

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tan²A – Sin²A= tan²Asin²A friends please answer me

Posted by Yash Kumar 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

tanA/(1-cotA) +cotA/(1-tanA)= (1+tanA+cotA) plz. gave me a solution plz

Posted by Tushar Teotia 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yash Kumar 5 years, 3 months ago

tanA/(1–cotA) + cotA(1–tanA) tanA/(1–1/tanA) + 1/tanA(1–tanA) tanA/tanA–1/tanA + 1/tanA(1–tanA) tan²A/tanA–1 + 1/tanA(1–tanA) tan²A/tanA–1 —1/tanA(tanA–1) tan³A–1/tanA(tanA–1) (tanA–1)(tan²A+1+tanA)/tanA(tanA–1) tan²A/tanA + 1/tanA +tanA/tanA tanA + cotA + 1 1 + tanA + cotA

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Using theorem 6.2, prove that the line joining the mid points of any two sides of a triangle is parallel to the third side.( Chapter is Triangle)

Posted by Rashmi Sinha 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Root2xsquare+7x+5root2

Posted by Mathanbalaji Anavarathan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Bhai is saaal boards hai kuch tip do

Posted by Nikhil Rajput 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Asifa Naaz 5 years, 3 months ago

Only study

2Thank You

Atul Kumar 5 years, 3 months ago

Self study

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√x+y =7 √y+x=11

Posted by Shiksha Bharti 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Prachi Jain 5 years, 3 months ago

Aapse aacha?

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Nikhil Rajput 5 years, 3 months ago

Ata kya hai tumko

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ANSWER

If 2 bags &4 notebooks together cost RS 640 whereas 3 bags &6 notebooks together RS 960.Find cost of each bag & each notebook. From chapter of: Pair of linear equation in two variables.

Posted by Govardhan Gani 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Govardhan Gani 5 years, 3 months ago

Koyi iska batavoge please ?

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Nikhil Rajput 5 years, 3 months ago

Answer chaiye Nikal

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X+2=?

Posted by Akansha Aku 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Diksha Rai 5 years, 3 months ago

X=-2

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Atul Kumar 5 years, 3 months ago

x = -2

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Akansha Aku 5 years, 3 months ago

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What's the meaning of consistent, inconsistent, consistent (dependent)and coincidence.

Posted by Anupama ?? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Jeevan.G. Chaudhary 5 years, 3 months ago

Consistent Equations. - If we get a solution, then the pair of linear equations in two variables is called consistent equations. Inconsistent Equations - If we do not get a solution, then the pair of linear equations in two variables is called inconsistent equations. Consistent (dependent) Equations - If a system has at least one solution, it is said to be consistent . If a consistent system has exactly one solution, it is independent . If a consistent system has an infinite number of solutions, it is dependent . When you graph the equations, both equations represent the same line. Coincidence lines - If two lines are coincident then, they have infinite solution and pair of linear equations is consistent; If two lines are intersecting then, they have unique solution and pair of linear equations is consistent.

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The zeroes of the polynomial x² - 2x - 3 are

Posted by Rahul Kumawat 5 years, 3 months ago

CBSE > Class 10 > Mathematics