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

Since we know two non-parallel sides of the quadrilateral, we can easily construct the rectangle by considering any one of the given sides to be the base and constructing it. I can't share images here so I apologise for that! I hope this helped you.

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Anshika Pal 3 years, 8 months ago

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While constructing a ∆ABC with AB = 3 cm, BC = 4 cm, AC = 6 cm, ∠B = 45 and we draw a o ∠B = 60 o base line whose length is

Posted by Vivaan Suri 3 years, 8 months ago

CBSE > Class 09 > Mathematics

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the dimensions of a cinema hall are 9000 cm, 6000 cm and 1500 cm. How many persons can sit in hall if each person requires 108 m cube of air

Posted by Gauranshi Agarwal 3 years, 8 months ago

CBSE > Class 09 > Mathematics

3 answers

Gauranshi Agarwal 3 years, 7 months ago

Thanks yaaro

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Abhinav Tiwari 3 years, 8 months ago

7500000 m cube

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Kanishk Verma 3 years, 8 months ago

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Find the multiplicative invese of 1) 5‐² 2) 2-³

Posted by Niyati Mangela 3 years, 8 months ago

CBSE > Class 09 > Mathematics

2 answers

Kumud Chouhan 3 years, 8 months ago

i) 1/25 multiplicative inverse =25 ii)1/8=multiplicative inverse=8

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Gauranshi Agarwal 3 years, 8 months ago

5 ^-2 = 1/5 ^2 Multiplicative inverse of 1/5 ^2 = 5

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Triangal

Posted by Vishal Vishal 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Dhanvanth L 3 years, 8 months ago

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane

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The diameter of the Moon is approximately one fourth the diameter of the earth. Find the rate of their surface area

Posted by Vinayak Maske 3 years, 8 months ago

CBSE > Class 09 > Mathematics

2 answers

Niyati Mangela 3 years, 8 months ago

8:1

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Aayush Gupta 3 years, 8 months ago

I think it must be 8:1

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a^x-y.a^y-z.a^z-x

Posted by Arpit Thakur 3 years, 8 months ago

CBSE > Class 09 > Mathematics

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Plot the points A(0,3), B(5,3), C(4,0) and D(-1,0) on graph and identify the quadrilateral made

Posted by Pulkit Tyagi 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Lakhvinder Singh 3 years, 8 months ago

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Cocate √7 on number line

Posted by Samandeep Singh 3 years, 8 months ago

CBSE > Class 09 > Mathematics

0 answers

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Find the volume of a spare whose radius is. 7 cm

Posted by Subham Subham 3 years, 8 months ago

CBSE > Class 09 > Mathematics

5 answers

Vinayak Maske 3 years, 8 months ago

Haha

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Vishal Maurya 3 years, 8 months ago

1437.33

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Akshra Ch 3 years, 8 months ago

4/3 πr²

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Animesh Tantuvay 3 years, 8 months ago

Itsa nahi aata kya... ?

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Kanav Kanav 3 years, 8 months ago

Use the formula 4/3pie r3 by putting the value of radius 7

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Canvas

Posted by Shivam Patidar 3 years, 8 months ago

CBSE > Class 09 > Mathematics

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80 bulbs are selected as random from lot and there lifetime is recorded in from of frequency table given below find the probability selected randomly by lot has lie less than 900 are lifetime (hr) 300,500,700,900,100, frequency 10,12,23,25,10 please anybody can tell the answer

Posted by Hardavi Patel 3 years, 8 months ago

CBSE > Class 09 > Mathematics

0 answers

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N=6-2y

Posted by Kudari Megomi 3 years, 8 months ago

CBSE > Class 09 > Mathematics

0 answers

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6+7+78_4

Posted by Annu Mishra 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Kumud Chouhan 3 years, 8 months ago

6+7+78-4=87

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A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4cm . Find it's inner curved surface area, outer curved surface area, total surface area

Posted by Aditya Gurjar 3 years, 8 months ago

CBSE > Class 09 > Mathematics

2 answers

Kanav Kanav 3 years, 8 months ago

First find only outer and inner csa of the cylinder then put down the formula 2pie r2-R2 +1064.8 and968cm2

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Palakpreet Kaur 3 years, 8 months ago

Height of metal pipe =77cm Inner dia=4cm; radius =4/2 = 2cm Outer dia=4.4; radius=4.4/2=2.2cm A)inner c.s.a. =2Πrh 2×22/7×2×77 =44×2×11=968cm² B)outer c.s.a =2Πrh 2×22/7×2.2×77=1064.8cm² C)total surface area=inner c.s.a+outer c.s.a+area of 2 rings Area of 2 rings {R²-r²}=2Πr²=2×22/7×(2.2²-2²) 2×22/7×(4.84-4) =5.28cm² Icsa+ocsa+a of 2 rings 968+1064.8+5.28=2032.8+5.28=2038.08cm²

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A coin is tossed 150 times and the outcomes are recorded as follows. Outcome. H. T Frequency. 85. 65 Compute the probability of A)One head , B) one tail

Posted by R R 3 years, 8 months ago

CBSE > Class 09 > Mathematics

0 answers

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A chord of length 30 cm is drawn at a distance of 8cm from the centre of a circle find out the radius of the circle

Posted by Subhash Swarnkar 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Neesant Agrawal 3 years, 8 months ago

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Exercise 1.1

Posted by Anuj Tahkur 3 years, 8 months ago

CBSE > Class 09 > Mathematics

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Find the TSA and LSA of a cube of height = 6cm

Posted by Abdul Hakeem 3 years, 8 months ago

CBSE > Class 09 > Mathematics

4 answers

Rimjhim Chaudhari 3 years, 8 months ago

U can use formula of 6a^2 for TSA... 4a^2 for LSA...

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Vishal Maurya 3 years, 8 months ago

TSA of cube =216 LSA of cube = 144

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Kuldeep Dewasi 3 years, 8 months ago

The T. S. A is 216 and L. S. A is 216 CM 2

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Sushant Shah 3 years, 8 months ago

TSA of cube 6a^2 = 6×(6)^2=216. LSA of cube 4a^2 = 4× (6)^2=144.

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(1 +y) __ __ X 3

Posted by Tanuuu Purii 3 years, 8 months ago

CBSE > Class 09 > Mathematics

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(-2/5)⁵

Posted by Ankit Prajapati 3 years, 8 months ago

CBSE > Class 09 > Mathematics

0 answers

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Rationalise the denominator 1+√7/1-√7

Posted by Amrit Saini 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Sneha Kumari 3 years, 8 months ago

1+√7/1-√7*1+√7/1+√7=1+√7+√7+7/1-7=8+2√7/-6

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8.0025 in p/q form

Posted by Ayesha Asaf 3 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Priyal Gupta 3 years, 8 months ago

It will be equal to 80025/1000 which can be cancel and the final answer is 3201/40

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Why does 1/3 of 1/3 equal 1?

Posted by ᵐⁱˢˢ Lucid Dream 3 years, 8 months ago

CBSE > Class 09 > Mathematics

4 answers

Amrita Saini 3 years, 8 months ago

1/3 × 1/3 = 1/9

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Amrita Saini 3 years, 8 months ago

The word 'of ' to the best of my knowledge , is synonymous with the word multiply in the math world .If I have 40 loaves of bread (2 baskets multiplied by 20 loaves)In the same way 1/3 of 1/3 is synonymous with 1/3 multiplied by 1/3 , which is 1/9.

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ᵐⁱˢˢ Lucid Dream 3 years, 8 months ago

Thanks!..But I am still confused, Can you explain it in detail please...

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Amrita Saini 3 years, 8 months ago

1/3 of 1/3 does not equal to 1 because 'of 'means multiply so the answer is 1/9

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