Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Shruti Gupta 5 years, 4 months ago
- 1 answers
Posted by Ridhima Agrawal 5 years, 4 months ago
- 1 answers
Posted by Sunil Nitnaware 5 years, 4 months ago
- 3 answers
Sunisha Flower Decoretion 5 years, 4 months ago
Posted by Ridhima Agrawal 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Find five rational numbers between 3/5 and 4/5.
Solution: Since we want five numbers, we write 3/5 and 4/5 So multiply in numerator and denominator by 5+1 =6 we get
Posted by Rohith Jutla 5 years, 4 months ago
- 1 answers
Posted by Akshay Garg 5 years, 4 months ago
- 2 answers
Posted by Hamid Khan 5 years, 4 months ago
- 2 answers
Posted by Suzanne Smitha 5 years, 4 months ago
- 3 answers
Yogita Ingle 5 years, 4 months ago
√2 is non terminating non repeating because root 2 is an irrational number
Posted by Trishla Jain 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
Given: a+2b=10 and ab=15
Consider, a³+8b³ = a³ + (2b³)
=(a + 2b)³ - 3 × a × 2b(a + 2b) {SInce, a³ + b³ =(a + b )- 3ab(a + b)}
=(a + 2b)³ - 6ab(a + 2ab)
=(10)³- 6 × 15 × 10
=1000- 900 =100
Posted by Trishla Jain 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
8x3−27y3+125z3+ 90xyz
Using,
a3+b3+c3−3abc=(a+b+c)(a2+b2+c2−ab−bc−ca)
Here,
a=2x
b=−3y
c=5z,
Therefore,
=>(2x)3+(−3y)3+(5z)3−3×2x×(−3y)×5z
=(2x−3y+5z)(4x2+9y2+25z2+6xy+15yz−10xz)
Posted by Trishla Jain 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
{tex}2.7^3-1.6^3{/tex}
{tex}=(2.7-1.6)^3+3(2.7)(1.6)(2.7-1.6){/tex}
{tex}=(1.1)^3+3(2.7)(1.6)(1.1){/tex}
{tex}=(1.1)^3+14.256{/tex}
{tex}2.7^3-1.6^3-1.1^3{/tex}
{tex}=(1.1)^3+14.256-(1.1)^3{/tex}
{tex}=14.256{/tex}
Posted by Vedant Bhadra 5 years, 4 months ago
- 2 answers
Posted by Rekha Rani 5 years, 4 months ago
- 2 answers
Posted by Priyanshu Bisht 5 years, 4 months ago
- 2 answers
Silviya Shrivastav 5 years, 4 months ago
Posted by K Kaviya 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
l = 7m, n = 6.5m and h = 4m
∴ Area of the room = 2( l + b)h = 2(7 + 6.5) 4 = 108m2
Area of door = 3 × 1.4 = 4.2m2
Area of one window = 3 × 2 = 6m2
∴ Area of 3 windows = 3 × 2 = 6m2
∴ Area of the walls of the room to be colour washed = 108 - (4.2 + 6)
= 108 - 10.2 = 97.8m2
∴ Cost of colour washing @ Rs. 3.5 per square metre = 97.8 × 3.5 = Rs. 342.3
Posted by K Kaviya 5 years, 4 months ago
- 1 answers
Silviya Shrivastav 5 years, 4 months ago
Posted by Sonali Prajapat 5 years, 4 months ago
- 3 answers
Ananya Jaiswal 5 years, 4 months ago
Posted by K Kaviya 5 years, 4 months ago
- 1 answers
Ananya Jaiswal 5 years, 4 months ago
Posted by K Kaviya 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Given:
edge of cube = 10.5mm
Find :
total surface area in cm^2
Solution :
total surface area of cube = 6 a^2
area = 6 ×10.5^2
= 6×110.25 cm^2
= 661.5 cm^2
Posted by K Kaviya 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
The edge of the cube is 10.5mm = =10.5/10 cm
find its total surface area in cm.
Total surface area of cube =6a2 edge
SA=6 ×10.5/10×10.5/10
=6.615 cm2.
Posted by Raghunath Tulo 5 years, 4 months ago
- 1 answers
Posted by Sajanna Eragadda 5 years, 4 months ago
- 2 answers
Posted by Pawan Bairwa 5 years, 4 months ago
- 2 answers
Posted by Pawan Bairwa 5 years, 4 months ago
- 0 answers
Posted by Pawan Bairwa 5 years, 4 months ago
- 0 answers
Posted by Geeta Arora 5 years, 4 months ago
- 0 answers
Posted by Hemendra Gera 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
{tex}x^3+7x^2+7x-15{/tex}
= (x−1)(x2+8x+15)
= (x−1)(x+3)(x+5)
Posted by Mohan Singh 5 years, 4 months ago
- 0 answers
Posted by Kanchan Singh 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
6/x+11=2/x+9
6(x + 9) = 2(x +11)
6x + 54 = 2x + 22
6x - 2x = 22 - 54
4x = - 32
x = -32/4
x = -8
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Gaurav Seth 5 years, 4 months ago
We know that
(a+b+c)² = a² + b² + c² + 2(ab + bc + ca)
So,
(-2x + 5y - 3z)²
= (-2x)² + (5y)² + (-3z)² + 2 [ (-2x)*5y + 5y*(-3z) + (-3z)*(-2x) ]
= 4x² + 25y² + 9z² + 2 [ (-10xy) + (-15yz) + 6xz ]
= 4x² + 25y² + 9z² - 20xy - 30yz + 12xz
1Thank You