CBSE > Class 07 > Mathematics | CBSE Board | Homework Help

Additive inverse: - or minus is the additive inverse for Rational, natural, whole numbers and integers, since adding its additive inverse to a number results in zero.
- 3 + (-3) = 0
- (-4/5) + (-(-4/5)) = (-4/5) + 4/5 = 0

Hence, a + (-a) = (-a) + a = 0, where a can be rational number or natural number or whole number of integer.

Multiplicative inverse: Dividing a number by 1 is the multiplicative inverse for Rational, natural, whole numbers and integers, since multiplying it to the original number always results in 1.
- 3 x 1/3 = 1
- (-4/5) x (1/(-4/5) = (-4/5) x (-5/4) = 1

Hence, ax 1/a = 1/a x a = 1, where a can be rational number or natural number or integer.

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what is the absolute value of (-35096)

Posted by Muskan ?? 5 years, 8 months ago

CBSE > Class 07 > Mathematics

2 answers

Smriti Gupta 5 years, 8 months ago

35096

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Ayush Kumar Mandal 5 years, 8 months ago

35096

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25-5(-10)+(15)+(10)Please gave me the answer soon

Posted by Muskan ?? 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Muskan ?? 5 years, 4 months ago

If two angles are supplementary then the sum of their measure is ----------------------------?

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Express as rupees using decimals

Posted by Pranay Sourashtriya 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Pranay Sourashtriya 5 years, 8 months ago

7 Paise =7/100 =0.07

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-22+(-78)

Posted by Ayush Kumar Mandal 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 5 years, 8 months ago

-22 + (- 78)

= - 22 -78

= - (22 +78)

= - 100

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58+(-98) × (43)×+6

Posted by Priya Dixit 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

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7th class revision notes send me

Posted by Major Singh 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

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Determine each of the product 12

Posted by Pratishtha Dwivedi 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

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A shopkeeper earn a profit of Re 1 by selling one pen and incurs a loss of 40 paise per pencil of her old stock. (i ) In a particular month she incurs a loss of Rs 5. In this period, she sold 45 pens. How many pencil did she sell in this period

Posted by Gaurav Kumar Original One 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Pratishtha Dwivedi 5 years, 8 months ago

Nh j she h DJ nh

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-13 + (-69) + 57 - (-89) - (53 + (-49))what is the correct answer if answer is 60 then how plz give me answer with formula and by solving

Posted by Krishna Bhagat 5 years, 8 months ago

CBSE > Class 07 > Mathematics

2 answers

Yogita Ingle 5 years, 8 months ago

-13 + (-69) + 57 - (-89) - [53 + (-49) ]

= -13 + (-69) + 57 - (-89) - 53 -49)

= -13 - 69 + 57 + 89 - 53 - 49

= - [13 + 69 + 53 + 49]+ 57 + 89

= - 184 + 146

=- 38

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Pranav Gautam 5 years, 8 months ago

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ANSWER

12+(-23)=

Posted by Ayush Kumar Mandal 5 years, 8 months ago

CBSE > Class 07 > Mathematics

4 answers

Pulkit Rai 5 years, 8 months ago

-11

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K Devi Devi 5 years, 8 months ago

- 11

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Krishna Bhagat 5 years, 8 months ago

-11

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Aradhya Seth 5 years, 8 months ago

-11

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Write a pair of intergers whose

Posted by Aditya Sharma 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

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What is air

Posted by Chotu Javid 5 years, 8 months ago

CBSE > Class 07 > Mathematics

3 answers

Suprava Madala 5 years, 8 months ago

Air is a mixture of gases

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Pulkit Rai 5 years, 8 months ago

Air is a mixture of gases like Carbon dioxide, Oxygen etc

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Sachin Saikiran G 5 years, 8 months ago

Mixture of gas

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What is algebra?

Posted by Aditya Parmar 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Kanika Panwar 5 years, 8 months ago

The numbers where we don't know the value and where we put letters a, b, z.... Is called algebra...

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A square lawn is surrounded by a path 2.5 m wide.If the area of the path is 165m , find the area of lawn.

Posted by Saanvi Sharma 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

4*52/5

Posted by Maanya Rajpal 5 years, 8 months ago

CBSE > Class 07 > Mathematics

2 answers

Pulkit Rai 5 years, 8 months ago

52 ×4= 208 ÷ 5= 41.6

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Kanika Panwar 5 years, 8 months ago

41.5 is the answer

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If the area of a square is 165m , then what is the side of the square?

Posted by Saanvi Sharma 5 years, 8 months ago

CBSE > Class 07 > Mathematics

2 answers

Kanika Panwar 5 years, 8 months ago

12.84 is answer

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Yogita Ingle 5 years, 8 months ago

If the area of a square is 165 sq.m

area of square = (side)²

165 = (side)²

side = √165

side = 12.85 m

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ANSWER

7+(-20)

Posted by Maya Pardeshi 5 years, 8 months ago

CBSE > Class 07 > Mathematics

7 answers

Rishika Dudhwal 5 years, 8 months ago

7-20 -13

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Pulkit Rai 5 years, 8 months ago

-13

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Pranav Gautam 5 years, 8 months ago

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Kanika Panwar 5 years, 8 months ago

-13 is answer

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Yogita Ingle 5 years, 8 months ago

7 + (-20)

= 7 - 20

= - 13

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Maya Pardeshi 5 years, 8 months ago

Arrange into desending order 3by10,1by3,2by5

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Surya Singh 5 years, 8 months ago

-13

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Put the number 1 2 3 4 5 6 and7 in the circle sothat each straightline of 3 no adds up tothe some total

Posted by Pooja Kanojia 5 years, 8 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

The number of term in 4p2q — 3pq2 + 5 is solve it?

Posted by Jeevan Reddy 5 years, 8 months ago

CBSE > Class 07 > Mathematics

2 answers

Jeevan Reddy 5 years, 8 months ago

Yes

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Shreyash Raj 5 years, 8 months ago

1Thank You

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Exercises 2.2

Posted by Ashish Ashish 5 years, 8 months ago

CBSE > Class 07 > Mathematics

1 answers

Shreyash Raj 5 years, 8 months ago

KgjshtsjhtfjjgjjmstskhhhsjrhzahgrshjzjfheHYhmfjzkffufxktkhsjsjsfujssusydrrjjsryzyddytehjsrryisrysirsssastatjutsjurarurruaurarrisirarirsirrussurrufira??ig xtidlut sktiditzjtt stu iutsot outsp ut pit pti p spst pt pstu tpusptsu tpsu stp. St zp p R r rpp p R pduDUU RU ru aur RUprrup ru pRU P pep e are p. UeDRU ru. D us. Aru rua

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234-456+20

Posted by Dinesh Sharma 5 years, 8 months ago

CBSE > Class 07 > Mathematics

5 answers

Smriti Gupta 5 years, 8 months ago

-202

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Pulkit Rai 5 years, 8 months ago

-202

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Surya Singh 5 years, 8 months ago

-202

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Shreyash Raj 5 years, 8 months ago

-202

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Dinesh Sharma 5 years, 8 months ago

_202

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Can two right angle be complementary

Posted by Divyasri Macha 5 years, 8 months ago

CBSE > Class 07 > Mathematics

3 answers

Surya Singh 5 years, 8 months ago

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Shreyash Raj 5 years, 8 months ago

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Anika Kanade 5 years, 8 months ago

A complementary angle is when the angle measures 90 degrees. So two angles will not make a complementary angle but will make a supplementary angle measuring 180 degrees.

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Is the two distinct lines are complementary?

Posted by Divyasri Macha 5 years, 8 months ago

CBSE > Class 07 > Mathematics