CBSE > Class 08 > Mathematics | CBSE Board | Homework Help

Here, 68 can be written as (70-2) And 72 can be written as (70+2) Therefore, The identity we'll use is - (a-b)(a+b) = a²-b² Hence, (70-2)(70+2) = 70²-2² = 4900 - 4 = 4896 is the answer.

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aAAa labexium (6Aca dRhewmbus Votw ubero = ( Valw dylnglL

Posted by Mudita Singh 4 years, 9 months ago

CBSE > Class 08 > Mathematics

0 answers

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[(1/4)-3

Posted by Shilpi Talreja 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Akanshi Gupta 4 years, 9 months ago

(1/4) -3 => 4³ =>64

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5. Two numbers are in the ratio 5:3. If they differ by 18, what are the numbers?

Posted by Suranjana Panigrahi 4 years, 9 months ago

CBSE > Class 08 > Mathematics

2 answers

Aditi Mishra Ix-A 4 years, 9 months ago

LET THE NUMBERS BE 5x and 3x 5x-3x=18 2x=18 x=18/2 x=9 5x=5×9=45 3x=3×9=27 Hence,the numbers are 45 and 27

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Dhanista Nongmeikapam 4 years, 9 months ago

Take the numbers as 5x and 3x. So, 5x-3x=18 2x=18 (5x-3x=2x) x=18/2 (transposing 2 to RHS) x=9 Thus, the numbers= 5x= 5×9= 45 and 3x = 3×9 = 27.

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Construct two equations starting with x=2

Posted by Minu Bala 4 years, 9 months ago

CBSE > Class 08 > Mathematics

0 answers

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What is tissue

Posted by Ayush Sharma 4 years, 9 months ago

CBSE > Class 08 > Mathematics

4 answers

Ishneet Kaur 4 years, 9 months ago

Each organ is further made up of smaller parts called tissue. A tissue is a group of similar cells performing specific functions

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Akanshi Gupta 4 years, 9 months ago

A tissue is a group of cells with a similar structure, organised to carry out specific functions.

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Anushka Soni 4 years, 9 months ago

Group of cells performing a specialised function is called tissue

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Tanuj Joshi 4 years, 9 months ago

Group of cells when come together form tissue

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What is the additive inverse of 4

Posted by Ghazala. Nadheera 4 years, 9 months ago

CBSE > Class 08 > Mathematics

3 answers

Pooja Raj Shekar 4 years, 8 months ago

Additive inverse of 4 is -4

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Akanshi Gupta 4 years, 9 months ago

-4

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Shruti ? 4 years, 9 months ago

-4

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The additive inverse of -6/11 is

Posted by Hemant Basoya 4 years, 9 months ago

CBSE > Class 08 > Mathematics

2 answers

Akanshi Gupta 4 years, 9 months ago

6/11

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Sakshi Bijarniya 4 years, 9 months ago

-11/6

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8.2

Posted by Crazy Gamer 4 years, 9 months ago

CBSE > Class 08 > Mathematics

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Observe the following table and find if x and y are directly proposition X / 6 / 10 / 14 Y / 4 / 8 / 12

Posted by Divyanshu Malwal 4 years, 9 months ago

CBSE > Class 08 > Mathematics

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A shopkeeper bought two TV sets at Rs10000 each .he sold one at profit of8% and the other at loss of 6% find the selling price for each. Find out the total profit or loss?

Posted by Sanjeevani Yadav 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Anushka Soni 4 years, 9 months ago

Cost price of a T.V set =Rs 10000 profit =10% Selling price =[100+p/100]×C.P =[100+10/100]×10000 =110/100×10000 =11×1000 =Rs. 11000 Loss =10% Selling price =[100−L/100]×C.P =100−10/100×10000 =90/100×10000 =9×1000 =9000 Total cost price =10000+10000 =20000 Total selling price =11000+9000=20000 Here C.P=S.P Therefore, it is neither Loss nor Profit.

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9(y+1) (x+2)

Posted by Harshita Kukreti 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Prachi Rai 4 years, 9 months ago

9{y(x+2)+1(x+2)} 9(yx+2y+x+2) 9yx+ 18y+9x+18

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Find the volume of a cuboid whose breadth is half of its length and height is triple the length.

Posted by Ramulu Eeda 4 years, 9 months ago

CBSE > Class 08 > Mathematics

4 answers

Banarasiya Don???? 4 years, 9 months ago

(l×b×h)formula of volume of cuboid So the answer will be 156

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Khyaati Agrawal 4 years, 9 months ago

(l×b×h)formula of volume of cuboid So the answer will be 156

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Piyush Rajput 4 years, 9 months ago

156

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Large Tamin 4 years, 9 months ago

156

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Can 2498 be a perfect square

Posted by Gayatri Kumari 4 years, 9 months ago

CBSE > Class 08 > Mathematics

4 answers

Banarasiya Don???? 4 years, 9 months ago

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Malhun Khan 4 years, 9 months ago

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Anshul Yadav 4 years, 9 months ago

Is not a perfect square

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Aryan Kant 4 years, 9 months ago

49.9

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What is the formula of (a-b)hole square

Posted by Taniya Prajapati 4 years, 9 months ago

CBSE > Class 08 > Mathematics

3 answers

Khyaati Agrawal 4 years, 9 months ago

(a-b)²=a²-2ab+b²

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Anshul Yadav 4 years, 9 months ago

A^2-2ab+b^2

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Aryan Kant 4 years, 9 months ago

a²+b²-2ab

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28×7power4 ÷2power3×7power10

Posted by Anushka Chahar 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Taniya Prajapati 4 years, 9 months ago

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Rohan can do a piece of work in 24 days while Raghav can do it in 30 days in how many days can they complete it of they work together

Posted by Aishwarya Patariya 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Suhani Pradhan 4 years, 9 months ago

13 days 8 hours.

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Mrs. Kaushik has a square plot with the measurement as shown in the figure. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of Rs. 55 per m2.

Posted by Saju Abraham 4 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Saju Abraham 4 years, 9 months ago

Side of a square plot = 25 m Area of square plot = (Side)2 = (25)2 = 625 m2 Length and Breadth of the house is 20 m and 15 m respectively Area of the house = (length x breadth ) = 20 15 = 300 m2 Area of garden = Area of square plot – Area of house = (625 – 300) = 325 m2 Cost of developing the garden around the house is Rs.55 Total Cost of developing the garden of area 325 sq. m = Rs.(55 325) = Rs.17,875

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Multiple tha binomial : (8.5m + 9) - (5m + 5)

Posted by Suparna Ghosh 4 years, 9 months ago

CBSE > Class 08 > Mathematics