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5a+5b+2ab=92; 5b+5c+2bc=136; 5c+5a+2ca=244; find:7a+8b+9c

Posted by Ankush Raj 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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25/5(2+3)

Posted by Ravi Kumar Kumar 8 years, 2 months ago

CBSE > Class 11 > Mathematics

2 answers

Deep Sheth 8 years, 2 months ago

Wrong ans ans is 1

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Aayush Mahashabde 8 years, 2 months ago

3Thank You

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find the sum of all two digit numbers which when divided by 4 yields 1 as deminator

Posted by Kunal Kumar 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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ax2+bx+c

Posted by Himanshu Raj 8 years, 2 months ago

CBSE > Class 11 > Mathematics

0 answers

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Solve sin2x-sin4x+sin6x=0

Posted by Anju Paraste 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Find the range of function f(x) = cos x + sin x + √2 .

Posted by Bishwajit Deka 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Marks division of half yearly chapters

Posted by Akshunya Garg Gara 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Tan 60

Posted by Pravesh Choudhary 8 years, 2 months ago

CBSE > Class 11 > Mathematics

3 answers

Aryan Tripathi 8 years, 2 months ago

Root 3

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Vaidansh Saini 8 years, 2 months ago

Tan(~3420)

0Thank You

Vaidansh Saini 8 years, 2 months ago

Tan(60*57degree)

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Sum of the first p,q and r terms of an a.p

Posted by Debi Prasad Mohanty 8 years, 2 months ago

CBSE > Class 11 > Mathematics

0 answers

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Cos80 Cos40 what is it mean

Posted by Amit Mishra 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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The angle in one regular polygonis to that in another as 3:2 and the number of sides in first is twice that in second. Determine the number of sides of two polygons

Posted by Shreya Mishra 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Cos60+sin30+tan45

Posted by Abhishek Anand 8 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Yuvraj Patel 8 years, 2 months ago

1/2+1/2+1=2

2Thank You

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Integration of {cos9x+cos6x}/{2cos5x-1}

Posted by Dhaval Veerani 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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What is vector

Posted by Laddi Pb 8 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Biki Roy 8 years, 2 months ago

It is a quantity that has both direction and magnitude and it should also follow rules of vector algebra.

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How many rectangle can be drawn through 21 points on a circle?

Posted by Ravi Meena 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Prove that sin5x-2sin3x+sinx/cos5x-cosx=tanx

Posted by Shubham Mishra 8 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Yogesh Rupireddy 8 years, 2 months ago

By applying transformations 2sin(5x+x/2)cos(5x_x/2)_2sin3x÷ _2sin (5x+x/2)sin(5x_x/2). And solve it

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The third term of an ap of an ap is 7 and 17 term exceeds 3 time the third time by 2 to find the first term and the common difference and the sum of first n Peter please answer now

Posted by Richard Gaurav Richa 8 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Aryan Tripathi 8 years, 2 months ago

A+ 2 D=7. eq 1 By questions, A+16 D=3 (A+2d) + 2 : 5d- a=2. Eq 2 By solving eq1 and eq2 we get, D= 9/7 and a= 31/7 Sum =n/2 {2a+ (n -1)d}

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Th bol the third question

Posted by Richard Gaurav Richa 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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miscellaneous exercise on chapter 1 question no.14 and 15

Posted by Nawaz Bhai Shahnawaz 8 years, 2 months ago

CBSE > Class 11 > Mathematics

0 answers

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miscellaneous exercise on chapter 1 sets

Posted by Nawaz Bhai Shahnawaz 8 years, 2 months ago

CBSE > Class 11 > Mathematics

0 answers

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Sin-1485°

Posted by Rishabh Bhilwar 8 years, 2 months ago

CBSE > Class 11 > Mathematics

2 answers

Yuvraj Patel 8 years, 2 months ago

Sin-1485°-1440°=Sin45°=1/√2 because 360°×4=1440°

1Thank You

Aman Vaish 8 years, 2 months ago

(√3-1)/2√2

2Thank You

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Find x and y if {([(1+i)x-2i]/3+i)+([(2-3i)y+i]/3-i)}=i

Posted by Krup Kachhia 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Construct a triangle with sides 5cm,6cm and 7cm and then another triangle whose sides are 7/5 of the corresponding sides of the first triangle

Posted by Satyam Barua 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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(Class 11) In chapter Probability, Miscellaneous exercise of question no. 9 Ist part say that number formed be greater than 5000 so in formation of numbers it must not be included 5000 but in answer it is said to be right . What's the reason behind this ? Correct answer may be 100/249.

Posted by Sarthak Kasaudhan 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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A wheel

Posted by Abhishek Gupta 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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A wheel make 360 revolutions in one minute. Through How many radians does it turn in one second?

Posted by Abhishek Gupta 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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Prove that cos 458 + cos 4358 + cos 45 5 by 8 + cos 4758 equal to 3 by 2

Posted by Sanjana Kumari 8 years, 2 months ago

CBSE > Class 11 > Mathematics

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How many 5-digit telephone numbers can be constructed using the digits 0 to 9,if each number starts with 67 and no digit appears more tha once.

Posted by Shreyansh Dubey 8 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Naveen Sharma 8 years, 2 months ago

It is given that the 5-digit telephone numbers always start with 67.

Therefore, there will be as many phone numbers as there are ways of filling 3 vacant places.

by the digits 0 – 9, keeping in mind that the digits cannot be repeated.

The units place can be filled by any of the digits from 0 – 9, except digits 6 and 7.
Therefore, the units place can be filled in 8 different ways following which,
the tens place can be filled in by any of the remaining 7 digits in 7 different ways, and
the hundreds place can be filled in by any of the remaining 6 digits in 6 different ways.

Therefore, by multiplication principle, the required number of ways in which 5-digit telephone numbers can be constructed is 8 × 7 × 6 = 336

1Thank You

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Evaluate lim sinax/tanbx

Posted by Sakshi Singh 8 years, 2 months ago

CBSE > Class 11 > Mathematics