CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

FIRST RATIONALISE 1/X 1/ 6 - root 35 × 6+ ROOT 35 =6+ ROOT35 /6²- ROOT 35 1/X = 6+ ROOT 35 SO X+1/X = 6- ROOT 35 + 6 + ROOT 35 X+1/X= 6+6 X+1/X = 12 ANS = 12

3Thank You

ANSWER

A traffic signal board, indicating ‘ SCHOOL AHEAD ’ , is an equilateral triangle with side ‛a’ . Find the area of the signal board , using Heron ’s formola . If its perimeter is 180 cm , what will be the area of the signal board?

Posted by Rd Pandey 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Manish Meena 5 years, 4 months ago

Area of triangle = √(s(s−a)(s−b)(s −c)) Here, s is the semi-perimeter, and a, b, c are the sides of the triangle Given Perimeter = 180 cm Semi-Perimeter = s =Perimeter/2 s = 180/2 s = 90 cm Given that the triangle is equilateral Since all sides of equilateral triangle are equal ∴ a = b = c Perimeter = 180 cm a + a + a = 180 cm 3a = 180 cm a = 180/3 cm a = 60 cm Area of triangle = √(s(s−a)(s−b)(s −c)) Putting a = b = c = 60 cm , s = 90 cm Area of signal board = √(90(90−60)(90−60)(90 −60)) = √( 90(30)(30)(30) ) = √( (9×3×3×3)×(10)4) = √((9×9)×3×(10)4) = √((92)×3×(10)4) = √92×√3 × √((10)4) = 9×√3 ×(〖104)〗^(1/2) = 9 ×√3 × (102) = 9 × 100 × √3 = 900√3 Thus, Area = 900√3 cm2

1Thank You

Silviya Shrivastav 5 years, 4 months ago

S=60+60+60/2 =90 Area=√90(90-60)(90-60)(90-60) =√90*30*30*30 =√3*3*10*30*30*3*10 =3*10*30√3 =900√3cm.sq HOPE IT HELPS

1Thank You

ANSWER

Evaluate (64)1/6

Posted by Himanshu Sharma 5 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Ashok Jain 5 years, 4 months ago

0Thank You

Ashvin Kharadi 5 years, 4 months ago

9.2581481533419209

0Thank You

Manish Meena 5 years, 4 months ago

Rewrite 64 as 2 6 . ( 2 6 ) 1 6 Apply the power rule and multiply exponents, ( a m ) n = a m n . 2 6 ( 1 6 ) Cancel the common factor of 6 . Then ans. = 2

0Thank You

Silviya Shrivastav 5 years, 4 months ago

Take LCM of 64=2*2*2*2*2*2 pair them in square =(2^6)1/6 =6and1/6 (will cancel each other) =2

2Thank You

ANSWER

Check whether 7+3x is a factor of 3xcube +7x

Posted by Dhanush M 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Ashok Jain 5 years, 4 months ago

0Thank You

Santosh Shukla 5 years, 4 months ago

Brainly.in What is your question? 1 salonisood salonisood 29.05.2017 Math Secondary School +5 pts Answered Check whether 7+3x is a factor of 3x³+7x 2 SEE ANSWERS Log in to add comment Answer Expert Verified 4.5/5 460 hukam0685 Genius 3.5K answers 846.9K people helped Answer: No , 7+3x is not factor of 3x³+7x Step-by-step explanation: To find whether is a factor of find the value of x from f(x) and put to g(x) ,if expression becomes zero than f(x) is a factor of g(x),otherwise not g(-7/3) is not zero,hence f(x) is not a factor of g(x) Hope it helps you.

1Thank You

ANSWER

23 (/75)

Posted by Annu Kapasia 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Silviya Shrivastav 5 years, 4 months ago

0.3066666666666

0Thank You

ANSWER

P(y) =y2-y+1

Posted by Kolli Pavan Kumar Reddy 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Ashok Jain 5 years, 3 months ago

Correct

0Thank You

Meenu Gupta 5 years, 4 months ago

What we have do in this pls tell then only we are able to solve it

0Thank You

ANSWER

The coefficient of x^2 in the expansion of (x+3)^4is

Posted by Suhani Rai 5 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Ashok Jain 5 years, 4 months ago

Any coeficient can be added

1Thank You

Ashok Jain 5 years, 4 months ago

(X+3)⁴ = x⁴+4x³(3)+6x²(3)²+4(3)³x+(3)⁴ = x⁴+12x³+54x²+108x+243

1Thank You

Manish Meena 5 years, 4 months ago

(X+3)⁴ = x⁴+4x³(3)+6x²(3)²+4(3)³x+(3)⁴ = x⁴+12x³+54x²+108x+243 I LIKE IT

2Thank You

Parthav Udayasankar 5 years, 4 months ago

(X+3)⁴ = x⁴+4x³(3)+6x²(3)²+4(3)³x+(3)⁴ = x⁴+12x³+54x²+108x+243

2Thank You

ANSWER

4. The abscissa and ordinate of the point with Co-ordinates (8, 12) is (a) abscissa 12 and ordinate 8 (b) abscissa 8 and ordinate 12 (c) abscissa 0 and ordinate 20 (d) none of these Ans. (a) abscissa 12 and ordinate The answer which is given above is right or wrong

Posted by Suhani Rai 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Silviya Shrivastav 5 years, 4 months ago

(b)abscissa8 and ordinate12 Basic concept: (x,y)where x=abscissa y=ordinate Hope it helps!!

1Thank You

ANSWER

Find the coordinates of the vertices of the square ABCD (side 2a) (i)taking AB and AD as axes (ii)taking the centre of the square as origin and axis parallel to the sides AB and AD.

Posted by Manju Singh 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Santosh Shukla 5 years, 4 months ago

Here is your answer....... ABCD be a square Side = 2a Centre = (0,0) Origin Y-coordinates of AB = (0-2a)/2 = -a Y-coordinates of AD = (0+2a)/2 = a ∴ the coordinates are :- A(-a,-a) B (a,-a) C (a,a) D (-a,a) #Refer to the figure. I hope it helps you ^_^

1Thank You

ANSWER

√15×√29

Posted by Diksha Sangolkar 5 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Ashvin Kharadi 5 years, 4 months ago

9.2581481533419209

0Thank You

Dhanush M 5 years, 4 months ago

20.85

0Thank You

Avinash Kumar 5 years, 4 months ago

20.85

0Thank You

ANSWER

0,5

Posted by Annu Kapasia 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Madhav Sisodiya 5 years, 4 months ago

On y axis

0Thank You

ANSWER

If is a solution of the equation 3x-5y=a, then value of a is

Posted by Suhani Rai 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Shaan Sharma 9 A 5 years, 4 months ago

1Thank You

ANSWER

3300-123

Posted by Zeesha Ali 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Ashok Jain 5 years, 4 months ago

3177

0Thank You

Tushar Jethwa 5 years, 4 months ago

Its 3177

0Thank You

ANSWER

Rational-Irrational=

Posted by Himanshu Sharma 5 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Ashok Jain 5 years, 4 months ago

IRRATIONAL

0Thank You

Samarth Jogani 5 years, 4 months ago

IRRATIONAL

1Thank You

Manju Singh 5 years, 4 months ago

Irrational

2Thank You

ANSWER

(10838377288)³ ??

Posted by Karmit Chugh 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Suhani Rai 5 years, 4 months ago

1.27318876E30

0Thank You

ANSWER

If the diagonal of a parallelogram are equal, then show that it is rectangle

Posted by Rohit Jadhav 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Sunita Sah 5 years, 4 months ago

*"क्या यही सतयुग है"* 1- ना Sunday बीतने की चिंता 2- ना Monday आने का डर 3- ना पैसे कमाने का मोह 4-ना खर्च करने की ख्वाइश 5-ना होटल मे खाने की इच्छा 6-ना घुमने जाने की खुशी 7-ना सोना-चांदी का मोह 8-ना पैसे का मोह 9-ना नए कपड़े पहनने की एक्साइटमेन्ट 10-ना अच्छे से तैयार होने की चिंता क्या हम मोक्ष द्वार पर पहुंच गए हैं? ऐसा लगता है कलयुग समाप्त हो गया है और सतयुग आ गया है. 11- पूजा-पाठ,परिवार का साथ 12-उपवास, रामायण, महाभारत 13-प्रदूषण रहित वातावरण 14-भाग दौड़ भरी जिंदगी समाप्त 15-सादगी भरा सबका जीवन 16-सब दाल-रोटी खा रहे हैं 17-समानता आ गयी है 18-कोई नौकर नहीं 19-घर में सब मिल जुल काम करते हैं 20- ना कोई महँगे कपड़े पहन रहा है 21- ना कोई आभूषण धारण कर रहा है 22-सब 24 घण्टे ईश्वर को ही याद करते हैं 23-लोग अपार दान धर्म भी कर रहे हैं 24-अहंकार भी शान्त हो गया है 25-लोग परस्पर सहयोग कर रहे हैं 26-सभी बच्चे अब माँ बाप के पास रहते हैं 27- घर घर भजन कीर्तन हो रहे हैं. *ये सतयुग नहीं तो और क्या है ?* जिस दिन वैकसीन आ जायेगा तो *फिर कलयुग आ जायेगा.*?

1Thank You

Gaurav Seth 5 years, 4 months ago