CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

The root of a number x is another number, which when multiplied by itself a given number of times, equals x. For example the second root of 9 is 3, because 3x3 = 9. The second root is usually called the square root. The third root is usually called the cube root.

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What is the root of 10

Posted by Abhishek Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Utkarsh Dubey 8 years, 4 months ago

3.16

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Yashvi Khandelwal 8 years, 4 months ago

√10 = 3.16227766

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(A+B) 2

Posted by Atul Chandra 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Vampire Dukedom 8 years, 4 months ago

A2+2ab+b2

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Factorise (x²-4x)(x²+4x-1)-20

Posted by Sumit Kushwah 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Mohammad Hasnain Pandit 4 years, 7 months ago

factorise ( x2- 4x) ( x2+4x-1)-20

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FILL THE BLANKS 【】+ 【】+ 【】 = 30 Use only 0,1,3,5,7,9,11,13,15,17,19

Posted by Saras Shandilya 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Prachi Maithil 8 years, 4 months ago

[15] + [0] + [15] =30 ?

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Yashvi Khandelwal 8 years, 4 months ago

Possible 【17 】 + 【 0 】 + 【 13 】 = 30 OK

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Aditi Shandilya 8 years, 4 months ago

How It is possible .given no. Are odd but the sum of no. Is even .that is not possible. So either your questions wrong or I am wrong

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If only is the point within a quadrilateral abcd show that oa+ob+oc+od> ac+bd

Posted by Prateek Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Yashvi Khandelwal 8 years, 4 months ago

This is question is wrong Try it your own by draw diagram you see the mistake.

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How to do solution show full of these question 2×22.5×8

Posted by Devendra Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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Amamsmr

Posted by King Khan 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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in triangle ABC,if triangle B=76° and triangleC 48° ,find the trangle A.

Posted by Himanshu Ranjan 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Parvej Alam 8 years, 4 months ago

In triangle ABC angle A+B+C=180 A+76+48=180 A+124=180 A=180-124 A=56

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Muskan Kumari 8 years, 4 months ago

The value of A is 56°

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Aarsi Choudhary 8 years, 4 months ago

It's answer is 56

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How is valency of hydragen

Posted by Saurabh Devraj 8 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Vishnu Singh 8 years, 4 months ago

Since atomic no. Of hydrogen is 1 and It requires 1 electron to complete it therefore valancy of hydrogen is 1

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Uday Kamble 8 years, 4 months ago

It's 1

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Uday Kamble 8 years, 4 months ago

It's H

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Saurabh Devraj 8 years, 4 months ago

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Length of the adjacent side of a parallelogram are 16 and ? and corresponding altitude of these sides are respectively 8 & 10 find the value of ? .

Posted by Ravi Ranjan Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Yashvi Khandelwal 8 years, 4 months ago

First,find the area of parallelogram by Base × Height = 16×8 = 128 Secondly , by another height get the another length of parallelogram : Base × Height 128 = b × 10 b = 12.8

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Rajeev Malhotra 8 years, 4 months ago

Let ABCD is a parallelogram and AC is a diagonal. The diagonal AC divides a parallelogram in to two congruent triangles.

Given , one side = 16 cm and corresing altitude = 8 cm. So its area = base x height /2 = 16x8/2= 8x8= 64 cm²

The area of another triangle will also be 64 cm²

^{64=base x height/2}

^{64= base x10/2}

^{64=5x base}

^{base= 64/5 = 12.8 cm . So another side is 12.8 cm long.}

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Ravi Ranjan Gupta 8 years, 4 months ago

12.8