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

In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.

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A student scored following marks in his test : 87,76,95 and 88. He wants a mean of 85 or a better overall for getting the merit certificate. What are the minimum marks he should get in the last test in order to achieve that average?

Posted by Srishty Pandey 5 years, 7 months ago

CBSE > Class 08 > Mathematics

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Anmol took a house loan this year. He borrowed ₹6 \text{ lakh}₹6 lakh₹, 6, start text, space, l, a, k, h, end text from the bank at a rate of interest of 10\%10%10, percent per annum. The interest is compounded annually.

Posted by Soham Patel 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Pranali R. 4 years, 11 months ago

6.06

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Sovit

Posted by Sakshi Poonia 5 years, 7 months ago

CBSE > Class 08 > Mathematics

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3x+2=-7(x-6) what is the ans

Posted by Johan Roy 5 years, 7 months ago

CBSE > Class 08 > Mathematics

3 answers

Sakshi Poonia 5 years, 7 months ago

Sovit

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Rajinder Uppal 5 years, 7 months ago

Kes9dud

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Sajal Choudhary 5 years, 7 months ago

This is the answer 3x+2=-7(x-6) 3x+2=-7x+42 3x+7x=42-2 10x=40 x=40/10 x=4

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Factorise the following expressions

Posted by Mohd Arif Sohil 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Mohd Arif Sohil 5 years, 7 months ago

Factorise the following expressions

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What is the sign of integer ?

Posted by Kesar ?☺ 5 years, 7 months ago

CBSE > Class 08 > Mathematics

2 answers

Radhu R 5 years, 7 months ago

- and + is the sing of integer

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Keshav Harshavardhan 5 years, 7 months ago

I or Z

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Can you define the properties of rational numbers

Posted by Student Deepanshi 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 5 years, 7 months ago

Rational numbers are commutative under addition and multiplication. If a, b are rational numbers, then:
Commutative law under addition: a + b = b + a.
Commutative law under multiplication: a x b = b x a.
Rational numbers are associative under addition and multiplication. If a, b, c are rational numbers, then:
Associative law under addition: a + (b + c) = (a + b) + c
Associative law under multiplication: a(bc) = (ab)c

0 is the additive identity for rational numbers.
1 is the multiplicative identity for rational numbers.

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The sum of a number and it's twice is 75 and the number is?

Posted by Devamithra. U 5 years, 7 months ago

CBSE > Class 08 > Mathematics

4 answers

Deeptanshu Sinha 5 years, 7 months ago

Let the no. be x ATP x+2x=75 => 3x = 75 => x= 25

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Sajal Choudhary 5 years, 7 months ago

5625

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Sanskriti Sahu 5 years, 7 months ago

5625

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Tulasi Prakash 5 years, 7 months ago

(75)*2="5625"

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7×19

Posted by Vansh Verma 5 years, 7 months ago

CBSE > Class 08 > Mathematics

3 answers

Sajal Choudhary 5 years, 7 months ago

133

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Profire ㅤ 5 years, 7 months ago

133

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Narottam Kumar 5 years, 7 months ago

133

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6=x+2

Posted by Aafaq Shekh 5 years, 7 months ago

CBSE > Class 08 > Mathematics

3 answers

Profire ㅤ 5 years, 7 months ago

X=4

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Narottam Kumar 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

6=x+2

x = 6 - 2

x = 4

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3m=5m/8÷5

Posted by Anjana Tr Anjus Ravi 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Keshav Harshavardhan 5 years, 7 months ago

3m×5m=1/8/5 15m=1/8×1/5 15m=1/40 m=1/40×15 m=15/40 m=3/8

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How to do long division method of 5232

Posted by Aditya Thakur 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Sajal Choudhary 5 years, 7 months ago

The answer is 73

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All property of squares and square root

Posted by Aditya Thakur 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 5 years, 7 months ago

Properties of square numbers are:

If a number has 0, 1, 4, 5, 6 or 9 in the unit’s place, then it may or may not be a square number. If a number has 2, 3, 7 or 8 in its units place then it is not a square number.
If a number has 1 or 9 in unit’s place, then it’s square ends in 1.
If a square number ends in 6, the number whose square it is, will have either 4 or 6 in unit’s place.

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x+5=10

Posted by Kavin M.K 5 years, 7 months ago

CBSE > Class 08 > Mathematics

4 answers

Profire ㅤ 5 years, 7 months ago

X=5

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Vikhyat Bhati 5 years, 7 months ago

x+5=10 X=10-5 X=5

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Dipal Khatri 5 years, 7 months ago

X=10-5. X=5

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Yogita Ingle 5 years, 7 months ago

x + 5 = 10

x = 10 - 5
x = 5

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Add the following rational numbers minus 2 by 3 and 5 by 3

Posted by Shalini Mishra 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Kavin M.K 5 years, 7 months ago

See the google

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1add2

Posted by Dnyaneshwar Pungle 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Madhav Maheshwari 5 years, 7 months ago

and

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The digit n the units place of the square of 523 is. *

Posted by Rainy Mandlecha 5 years, 7 months ago

CBSE > Class 08 > Mathematics

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Simplify and solve the following linear equations 3(t_3)=5(2t+1)

Posted by Ishika Goel 5 years, 7 months ago

CBSE > Class 08 > Mathematics

2 answers

Ishika Goel 5 years, 7 months ago

Thank u

1Thank You

Anushka Chahar 5 years, 7 months ago

3(t – 3) = 5(2t + 1) ⇒ 3t – 9 = 10t + 5 ⇒ 3t – 10t = 5 + 9 ⇒ -7t = 14 ⇒ t = 14/-7 ⇒ t = -2

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n/2_3n/4+5n/6=21

Posted by Ishika Goel 5 years, 7 months ago

CBSE > Class 08 > Mathematics

2 answers

Ishika Goel 5 years, 7 months ago

Thank u

1Thank You

Anushka Chahar 5 years, 7 months ago

Solution: n/2 - 3n/4 + 5n/6 = 21 LCM of the denominators 2,4 ,6 is 12. [6n - 3(3n) +2(5n)] / 12=21 [6n-9n+10n] = 12 x 21 -3n+10n =12 x21 7n = 12 x21 n = (12 x 21 ) /7 = 12 x3 = 36 n= 36

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{(-⅔)²}–³

Posted by Disha Sharma 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Adarsh Dubey 5 years, 7 months ago

Answer: (-2/3)^ 2×-3 (-2/3)^ -6 (-2/3) × (-2/3) × (-2/3) × (-2/3) × (-2/3) × (-2/3) =64/729 ans...

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Definition of integer

Posted by Satyam Chaudhary 5 years, 7 months ago

CBSE > Class 08 > Mathematics

3 answers

Dennila M 5 years, 7 months ago

A number which is not a fraction , a whole number is called integer

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Kirat Chhatwal 5 years, 7 months ago

A number which is not a fraction, a whole number is called integer.? If agree, leave thanks here plzz??

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Kowsalya K 5 years, 7 months ago

Wht is the definition means. The whole no such as 3 or 4 bit not 3.5

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Can you tell me that is rectangle a regular polygon or not with explanation...........

Posted by Prerana Ingale 5 years, 7 months ago

CBSE > Class 08 > Mathematics

1 answers

Sanjana S 5 years, 7 months ago

☆No rectangle is not an regular polygon. ☆Because a regular polygon means all sides are equal. ☆Ex: Equilateral triangle, regular hexagon, etc.... Hope it helps you !!!!

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A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?

Posted by Anushka Chahar 5 years, 7 months ago

CBSE > Class 08 > Mathematics