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Mega K 5 years, 3 months ago

It is a irrational number

Madhu Kaushik 5 years, 3 months ago

it is a irrational number

ANSWER

The sum of two numbers is 20.The sum of cubes whose cubes is 2060.Find t.hypatiahe quadratic equation

Posted by Naga Chandrika Yerram 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The sum of ages of a father and his son is 45 years. Five years ago the product of their ages was 124. determine their present ages. [ Note : do solve and select correct option].

Posted by Tejas Patil 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

Let the present age of father = x years and the present age of son = y years

According to question:

x + y = 45 ...(1)

Again, 5 years ago, the product of their ages was 124, therefore,

(Age of man 5 years ago) × (Age of son 5 years ago) = 124

(x – 5) × (y – 5) = 124

⇒ (45 – y - 5) ×(y – 5) = 124 [Using (1)]

⇒ 40y – y² - 200 + 5y = 124

⇒ y² - 45y + 324 = 0

⇒ y² - 36y - 9y + 324 = 0

⇒ y(y - 36) -9 (y - 36) = 0

⇒ (y - 36)(y - 9) = 0

⇒ y = 36 or y = 9

For y = 36, x = 45 - 36 = 9 which is not possible.

For y = 9, x = 45 - 9 = 36

Therefore, the present age of father = 36 years and the present age of son = 9 years.

ANSWER

Please anyone tell me how to obtain it's solution. Write the condition for ax2+bx+c=0 to have real roots

Posted by Abhay Singh 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

When a, b, c are real numbers, a 0: If = b² -4 a c = 0, then roots are equal (and real). If = b² -4 a c > 0, then roots are real and unequal. If = b² -4 a c < 0, then roots are complex.

ANSWER

A brooch is made with silver wire in the form of a circle with diametre 35mm. The wire is also used in 5 diametres which divide the circle into 10 equal sectors as shown fig. 12.12 Find: 1. The total length of the silver wire required. 2. The area of each sector of the brooch.

Posted by Sakshi Class10 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Relationship between zeroes and coefficients of polynomial

Posted by Ayush Jena 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Equation -3x+4y=5 and 9/2x-6y+15/2 have which solution 1. Unique solution 2.infinitely many solution 3.no solution 4.none of these

Posted by Mega K 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Anupama ?? 5 years, 3 months ago

Infinitely many solutions as a1/a2=b1/b2=c1/c2=-2/3

6Thank You

ANSWER

Equation -3x+4y=5 and 9/2x-6y+15/2=0 , which solution it have 1. Unique solution 2.many solution 3.No solution 4. None of these

Posted by Mega K 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Mega K 5 years, 3 months ago

Explain the answer please

Mansi Kumawat 5 years, 3 months ago

2.many solutions

ANSWER

C.S.A of cube

Posted by Purab Saini 5 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Pranav K.P 5 years, 3 months ago

C. S. A of a cube is 4(s)² or (4×side×side) It means we take the area of a cube except the top and bottom side. In cube there are 6 squares in which we only take 4 of them. Hope it is helpful ✌

Anupama ?? 5 years, 3 months ago

4(s)*2

Mega K 5 years, 3 months ago

4[ side] 2

Mandaloju Bharath 5 years, 3 months ago

4(s)²

₷Āńïk₳ Dĥãpãtè ₯ 5 years, 3 months ago

The curved surface area or the lateral surface area of a cube is 4(side)². #Hope it is helpful..

3Thank You

ANSWER

Find the integers of the word problem started above

Posted by Sachin Kohli 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the value of k if x-2 is a factor of x2-kx+10

Posted by Mega K 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Mandaloju Bharath 5 years, 3 months ago

X=2 X²-kx+10=0 2²-k(2)+10=0 4-2k+10=0 -2k+4+10=0 -2k+14=0 -2k=-14 K=-14/-2 K=7

₷Āńïk₳ Dĥãpãtè ₯ 5 years, 3 months ago

Given x-2=0.....so, x=2 2²-2k+10=0 -2k=-10-4 2k=14 (cancelling negative sign) k=14/2 k=7 #Hope it is helpful...

Yogita Ingle 5 years, 3 months ago

Put x = 2

x²-kx+10 = 0

(2)² - k(2) + 10 = 0
4 - 2k + 10 = 0
-2x +14 = 0

-2x = -14

x = 14/2 = 7

ANSWER

Sum of the areas of two square is 544m square . If the difference of their perimeter is 32m , find the sides of the two squares ?

Posted by Sarjit Rathod 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

₷Āńïk₳ Dĥãpãtè ₯ 5 years, 3 months ago

⇒Let, the side of the first square be=x the side of the second square be=y According to the first condition, x²+y²=544 →① According to the second condition, 4x-4y=32 (x>y) x-y=8 →② x=8-y Now putting x value in eq.1 (8-y)²+y²=544 64-16y+y²+y²=544 2y²-16y-480=0 y²-8y-240=0 Appliying quadratic formula, y=-(-8)±√-8²-4(-240) -------------------------- 2 y=20 and -12 (ignoring negative sign) Now put the value of y in eq.2 x-y=32 x=32-20 x=12 #Hope it is helpful...

ANSWER

Find ap of multiples of multiple of 2 between 100 to100 and from 100 to 1000for the same

Posted by Tanishq Rai 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the derivation of the Section formula? (Not the definition.ok? )

Posted by Pranav K.P 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

Let A (x1, y1) and B (x2, y2) be the endpoints of the given line segment AB and C(x, y) be the point which divides AB in the ratio m : n. We want to find the coordinates (x, y) of C. Now draw perpendiculars of A, C, B parallel to Y coordinate joining at P, Q, and R on X-axis.

ANSWER

Find the sum of 32 terms of an A.P. whose third term is 1 and the 6th term is -11.

Posted by ?☺???Hrishi Khapekar???☺? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Rohit Kumar 5 years, 3 months ago

Third term =a+2d=1---(¡) and sixth term = a+5d=-11 ---(¡¡) subtract equation (¡)from(¡¡) we get d=-4 then put the value of d in equation I we get a = 9 then sum = n÷2×[2a+(n-1)×d] we get sum is -1696

Nitish Raj 5 years, 3 months ago

Answer= -1696

ANSWER

Please answer the question from triangle chapter example 7 . Please explain. ???

Posted by Prajnasree Behera 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Prajnasree Behera 5 years, 3 months ago

If you solve this question by not saying unwanted advice I will obliged

Prajnasree Behera 5 years, 3 months ago

Thanku for ur advice

Sathwik Nannaware 5 years, 3 months ago

The answer is very simple my child. First of all read the question twice and is your own brainbecause I am a very busy person GOOD LUCK BOY/GIRL . YOU HAVE MY LEGENDARY BLESSINGS. ?THANK YOU?

4Thank You

ANSWER

The coordinates of the circumcenter of the Triangle formed by the points O (0,0) , A(a,0) and B(0,b) are

Posted by Madhiha ??? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

from circumcentre distance of every vertex is same

let circumcentre point C

so AC=BC=CO

AC^2=BC^2=CO^2

by distance formula

AC^2 = BC^2

[(x-a)^2+(y-0)^2] = [(x-0)^2+(y-b)^2]

by solving

x^2+a^2 -2ax+ y^2 = x^2 +y^2+ b^2-2yb

2(by-ax)= b^2 -a^2 ---- (1)

NOW AC^2=OC^2

(x-0)^2 + (y-b)^2 = x^2 + y^2

by solving this equation y=b/2

put the value of y in (1) and we will get x=a/2

So answer is (a/2,b/2)

ANSWER

Coffeceant and zeros

Posted by Siddhartha Mishra 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

39/+0(13+13)

Posted by Divya Divya 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Dev Sangwan 5 years, 3 months ago

I think Answer will be 'not defined'

Tripti Tiwari 5 years, 3 months ago

39 /+0 (13+13) =39/+0 (26) =39 /+0*26 =39/0 =0ans

Rd Gamers 5 years, 3 months ago

0 is the correct answer

Yogita Ingle 5 years, 3 months ago

39/+0(13+13)

= 39/+0(26)

= 39/0

= 0

ANSWER

(4x+9x)²

Posted by Anchal Sheoran 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Dhanush N 5 years, 3 months ago

(4x+9x)² We use (a+b)²=a²+b²+2ab =4x²+9x²+2*4x*9x =16x²+81x²+72 =97x²+72x² =169x²

Rd Gamers 5 years, 3 months ago

169x2

Yogita Ingle 5 years, 3 months ago

(4x+9x)²

= (13x)²

= 169x²

ANSWER

Solve the pare of linear equations 141x+93 y =189 and 93 x + 141 y=45

Posted by Puneet Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

141x+93 y =189 .........(i)

93 x + 141 y=45.........(ii)

Add (i) and (ii), we get

141x+93 y =189

93 x + 141 y=45
_______________
234x + 234 y= 234

x + y=1........ (iii)

Subtract (i) and (ii), we get

141x+93 y =189

93 x + 141 y=45
_______________
48 x - 48 y=144
x - y = 3........ (iv)

Adding (iii) and (iv), we get

x + y=1
+ x - y = 3

____________

2x = 4
x = 2
Put x = 2 in (iii)
2 + y = 1
y = 1 - 2 = -1

ANSWER

Find the numerator of fractional representation of 0.81 bar

Posted by Bhagyashri Marwadi 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Dev Sangwan 5 years, 3 months ago

9/11 Numerator is 9

Anupama ?? 5 years, 3 months ago

81/100

Sri Anish 5 years, 3 months ago

81/100

ANSWER

Formulae to find product of zero

Posted by Ritik Ranjan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Gaurav Seth 5 years, 3 months ago

For every quadratic equation, there can be one or more than one solution. These are called the roots of the quadratic equation.

For a quadratic equation ax²+bx+c = 0,

the sum of its roots = –b/a and the product of its roots = c/a.

Jagrat Narvariya 5 years, 3 months ago

Chapter 15

ANSWER

The quadratic polynomial whose sum of zeros is 3 and product of zeros is -2 is

Posted by Khushi Sambharia 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Nabila Ansari 5 years, 3 months ago

X^2 -3x-2

Aditya Tiwari 5 years, 3 months ago

x*2-3x-2

?????? ?????? 5 years, 3 months ago

x²-3x-2

Anupama ?? 5 years, 3 months ago

x*2 - 3x+2

ANSWER

X^2-5x=14 find value of x ?

Posted by Manav Sandhu 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Sri Anish 5 years, 3 months ago

X²-5X=14 X²-5X-14=0 X²-7X+2X-14=0 X(X-7)+2(X-7)=0 (X-7)(X+2)=0 (X-7)=0 (X+2)=0 X=7 and X=-2

Anirudh Jaat From Haryana 5 years, 3 months ago

it is done by this this x2-5x-14=0 x2+2x-7x-14=0. x(x+2)-7(x+2)=0 (x+2) (x-7) =0 if x+2=0. x=-2 Not Valid x-7=0 x=7

Aditya Tiwari 5 years, 3 months ago

7,-2

Anupama ?? 5 years, 3 months ago

x*2-5x-14=0 =x*2-7x -2x-14=0=x(x-7)-2(x-7)=0 =(x-7)(x-2)so x=7,2

ANSWER

Find the area of a triangle with A(1,4)and mid-pionts of sides through A being (2,-1)and(0,-1)

Posted by Chhavi Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Q u e s t i o n : Find the area of a triangle ABC with A(1, - 4) and mid-points of sides through A being (2, - 1) and (0, - 1)

A n s w e r :

Let E be the mid point of AB

ANSWER

Is (√3+5)² + (5-√3)² a rational number justify

Posted by Mahi Lodee 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Dev Sangwan 5 years, 3 months ago

You have to solve both the brackets Separately By (a²+b²+2ab) & (a²+b²-2ab) =3+25+10root3+25+3-10root3 =3+25+3+25 =56 56 is a terminating no so it is a rational no

Prashant Mori 5 years, 3 months ago