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

A 4-sided flat shape with straight sides where opposite sides are parallel.

Also:
• opposite sides are equal in length, and
• opposite angles are equal.

Squares, Rectangles and Rhombuses are all Parallelograms!

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Find the value of the following expressions when x=-1 2x-x-2

Posted by Jyoti Sharma 6 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Lavanya Chopra 6 years, 11 months ago

Sry it's -3

1Thank You

Lavanya Chopra 6 years, 11 months ago

-1

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Find the ratio of the circumference of two circle whose radii are in the ratio 4 : 5

Posted by Game Changer 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 11 months ago

Ration of radii is 4:5
So R1 = 4x and R2 = 5x
Ratio of circumference = 2 πR₁/ 2πR₂ = R₁/R₂ = 4x/5x = 4/5

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ANSWER

1st question

Posted by Vinita Choudhary 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Akankshya Nayak 6 years, 11 months ago

What do you mean by 1st question

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Simplify the expression and find their value if x=2 4(2x-1)=3x+11

Posted by Aditya Kumar Singh 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 11 months ago

4(2x - 1) = 3x + 11
8x - 4 = 3x +11
8x - 3x = 11+ 4
5x = 15
x = 15/5
x = 3

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Mega divide a circular disc into two equal part of radius 7 cm what is the perimeter of a semicircle ?

Posted by ☆ Pranal Rewatkar ☆ 6 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

Find the reciprocal of -1/3 (-15/6

Posted by Sadhana Keerthi 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Dilip Das 6 years, 11 months ago

-6/-45

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Express each of the following as a product of prime factors only in exponentialform given below number 768

Posted by Anusha Pattanashetti 6 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

A gardner wants to fence a circular garden of diameter 21m. Find the length of the rope he needs to purchase if he makes 2 rounds of fence . Also find the cost of the rope , if it costs Rs.4 per meter.

Posted by Diksha Sharma 6 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Diksha Sharma 6 years, 11 months ago

But , how???

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Chirag Gupta 6 years, 11 months ago

168

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If b = 15 and c = 25 find the value of a

Posted by Sadana Sruthi 6 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Sadana Sruthi 6 years, 10 months ago

OK thanks so much

1Thank You

Lavanya Chopra 6 years, 11 months ago

5 i guess

2Thank You

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7:p:35::45 Find the value of p

Posted by Ridham Vasava 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 11 months ago

{tex}\begin{array}{l}\frac7p=\;\frac{35}{45}\\35p=7\;\times45\\35p=\;315\\p\;=\;\frac{315}{35}\\p\;\;=9\end{array}{/tex}

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Add 2x -5y +3z

Posted by Mehak Dhillon 6 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

Who to find circumference

Posted by Aparna Wadhaval 6 years, 11 months ago

CBSE > Class 07 > Mathematics

4 answers

Akankshya Nayak 6 years, 11 months ago

Formula is 2πr

1Thank You

Kaavya Joshi 6 years, 11 months ago

Circumfere = 2πr

1Thank You

Dîby@Jït D@S 4&4 6 years, 11 months ago

Formula is 2πr

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Dîby@Jït D@S 4&4 6 years, 11 months ago

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ANSWER

How do we do 7th class cbse exponents and powers EX13.2nd roman

Posted by K ∆ A ∆ R ∆ T ∆ H ∆ I∆ K✓ A R Y Y A N 6 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Dîby@Jït D@S 4&4 6 years, 11 months ago

I don't study that chapter

1Thank You

K ∆ A ∆ R ∆ T ∆ H ∆ I∆ K✓ A R Y Y A N 6 years, 11 months ago

Don't know

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If Length=35 perimeter=100 what is breadth

Posted by Aryan Naik 6 years, 11 months ago

CBSE > Class 07 > Mathematics

4 answers

Kaavya Joshi 6 years, 11 months ago

The perimeter of rectangle= 2(l+b) 100 = 2(35+b) 100 = 70 + 2b 2b = 100 - 70 2b = 30 b = 30÷2 b = 15 So, the breadth of rectangle is 15.

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Rishi Raj 6 years, 11 months ago

Let the breath X 2x(L+B)-100 2x(35+X)-100 35+X -100/2 35+X - 50 X - 50-35 X - 15

1Thank You

Konkana Bhattacharjee 6 years, 11 months ago

The perimeter of the rectangle = 2(l+b) = 2(35+b) = 100 = 70 + 2b = 100 = 2b = 100 - 70 = 2b = 30 = b = 15 cm Therefore the length of the bredth of the rectangle is 15cm

2Thank You

Konkana Bhattacharjee 6 years, 11 months ago

The perimeter of a rectangle is = l × b The size of the bredth will be so B/C = 35 × x = 100 = 35x = 100 = x = 100 ÷ 35 = x = 2.857 Therefore the length of the bredth is 2.857 cm

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Represent -6/5 o a number line.

Posted by Aalok Kumar 6 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

9x-13=11z+27

Posted by Siddharth Singh 6 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

Solve the equation 10p +10=100

Posted by Mohit Bundela 6 years, 11 months ago

CBSE > Class 07 > Mathematics

6 answers

Kaavya Joshi 5 years, 4 months ago

10p + 10 = 100 10p = 100 - 10 10p = 90 p = 90÷10 p = 9 So, the value of p is 9.

2Thank You

Gurleen Kaur 6 years, 11 months ago

10p+10=100 =10p=100-10 10p=90 p=90/10 p=9

1Thank You

Akankshya Nayak 6 years, 11 months ago

10p+10=100 10p=100 - 10 10p=90 P =90/10 p=9

1Thank You

Vishaal B 6 years, 11 months ago

P=9

1Thank You

Yogita Ingle 6 years, 11 months ago

10p + 10 = 100
10p = 100 - 10
10p = 90
p = 90/10
p = 9

3Thank You

Mohit Bundela 6 years, 11 months ago

10p=100-10 10p=90 P=90\10 P=9

3Thank You

ANSWER

All numbers along with negative of natural numbers are known as

Posted by Harshul Saxena 6 years, 11 months ago

CBSE > Class 07 > Mathematics

3 answers

Gurleen Kaur 6 years, 11 months ago

Integers

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Raushan Kumar Babu 6 years, 11 months ago

Called integer

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Yogita Ingle 6 years, 11 months ago

The negative numbers, zero and the natural numbers together are called integers.
A collection of numbers which is written as …….. -4, -3, -2, -1, 0, 1, 2, 3, 4……… .
These numbers are called integers.

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What is the coefficient of3-6

Posted by Jeya Bharathi 6 years, 11 months ago

CBSE > Class 07 > Mathematics