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

1) Perimeter of ΔABE=a+b+c =5/2+11/4+18/5 =177/20cm 2)Perimeter of rectangle BCDE =2*(L+B) =2*(11/4+7/6) =2*(33+14/12) 47/6 Comparing (1) & (2)'s solution, we get 177/20 =LCM=60 177*3/20*3 & 47*10/6*10 531/60 > 470/60 So, Perimeter of ΔABE is greater than Perimeter of rectangle BCDE

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Arati Gaikwad 6 years, 5 months ago

Dont know

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A+B+C =180

Posted by Ishversing Singh 6 years, 5 months ago

CBSE > Class 07 > Mathematics

1 answers

Ayush Gurjar 6 years, 5 months ago

We can take whatever number according to that the sum have to be 180 like - A-10, B-10, C-160 . If A or B or C is given then we use formula .

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Tempurature of room at midnight is -4celcius the room tepuratue increaseat the rate of 2deegre celcius per hour find the tempurature at4a.m and 12noon

Posted by Surjeet Kumar 6 years, 5 months ago

CBSE > Class 07 > Mathematics

1 answers

Ayush Gurjar 6 years, 5 months ago

4×2-(-4) = 8-4 = 4℃

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What is the fraction

Posted by Megha Tyagi 6 years, 5 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 5 months ago

A fraction represents a part of a whole or, more generally, any number of equal parts.

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700 m to km convert

Posted by Kanushi ?? Kharbanda 6 years, 5 months ago

CBSE > Class 07 > Mathematics

4 answers

Sia ? 6 years, 5 months ago

700 m = {tex}\frac{700}{1000}{/tex}= 0.7 km

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Ayush Gurjar 6 years, 5 months ago

700m÷1000m = 0.7 K.M

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Vipin Kumar 6 years, 5 months ago

0.7Km

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Pooja Kohli 6 years, 5 months ago

O.700 km

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-2 =6

Posted by Pratik Guria 6 years, 5 months ago

CBSE > Class 07 > Mathematics

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What is distributive praoperty

Posted by Keerthiraj My 6 years, 5 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 5 months ago

The distributive property is a property used in Algebra where a number, when multiplied with a group of numbers, can be distributed to each number of the group and multiplied. Let’s look at the formula and examples for further explanations.

Distributive Property Formula –

a × (b + c) = a × b + a × c

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What is commutative property

Posted by Keerthiraj My 6 years, 5 months ago

CBSE > Class 07 > Mathematics

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Yogita Ingle 6 years, 5 months ago

commutative property explains that order of terms doesn’t matters, result will be same. That is, suppose two numbers A<amp-mathml data-formula="\[A\]" inline="" layout="container"></amp-mathml> and B<amp-mathml data-formula="\[B\]" inline="" layout="container"></amp-mathml> on addition gives a sum C<amp-mathml data-formula="\[C\]" inline="" layout="container"></amp-mathml>, then:
A + B = B + A = C
For example, 4+ 3 = 3 + 4 = 7 here, whether 3<amp-mathml data-formula="\[3\]" inline="" layout="container"></amp-mathml> come before or after the plus sign, the sum of 4<amp-mathml data-formula="\[4\]" inline="" layout="container"></amp-mathml> and 3<amp-mathml data-formula="\[3\]" inline="" layout="container"></amp-mathml> will be always 7<amp-mathml data-formula="\[7\]" inline="" layout="container"></amp-mathml> irrespective of their order.

Commutative law is applicable to multiplication also i.e. the multiplication properties of commutative law. For example, 2 × 3 = 6 = 3 × 2

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6/5÷5/6

Posted by Rahul Chaudhari 6 years, 5 months ago

CBSE > Class 07 > Mathematics