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

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Find the mean of following distribution x. f 12. 5 16. 7 20. 8 24. 5 28. 3 32. 2

Posted by Akshay Saraswat 2 years ago

CBSE > Class 09 > Mathematics

0 answers

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Shanti sweets stall was placing an order for making cardboard boxes for packing their sweets.two sizes of boxes were required .the bigger of dimensions 23cm×20cm×5cm and the smaller of dimensions 15cm×12cm×5cm.for all the overlaps 5% of the total surface area was required extra .if the cost of the cardboard is rs 4 for 100cm^2 find the cost of cardboard required for supplying 250 boxes of each kind

Posted by Pihu Singh 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Shahina Rahim 2 years ago

488

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Factorise x³-23x³+142x-120

Posted by Sandhya Dewangan 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Shashank Verma 2 years ago

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Sarvesh Adiga 2 years ago

No answer

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An element has electronic configuration 2, 8, 4. It will be classified as

Posted by Hetsoni King 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Abhinav Nair 2 years ago

This element has 2,8

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P. Guru Teja Prathap 2 years ago

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Factorize 8x³-(2x-y)³

Posted by Neenu N 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Abhinav Nair 2 years ago

y³+8x²y-4xy²

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If the sum of the angles in quadrilateral is 360 deegree and one angle measure 110 degrees find the sum of the remaining three sids

Posted by S K 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Prabhav Vaidya 2 years ago

360-110=250° The sum of remaining angles of the quadrilateral is 250°

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In an isosceles triangle ABC, with ab = ac, the bisectors of angle b and angle c intersect each other at o. Join a to o show that (i)ob=oc (ii) ao bisects angle a

Posted by Yashank Lokanindi 2 years ago

CBSE > Class 09 > Mathematics

0 answers

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3 root 45-5/2*root1/3+4root3

Posted by Anukriti Rajput 2 years ago

CBSE > Class 09 > Mathematics

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The surface area of a sphere is 44 cm². Find its diameter

Posted by Sahithi Bulusu 2 years ago

CBSE > Class 09 > Mathematics

3 answers

***** ### 2 years ago

S.A of Sphere = 44 cm² 4πr² = 44 cm² 4 × 22/7 × r² = 44 cm² r² = 44/4 × 7/22 r² = 3.5 cm r = √3.5 = 1.87 Diameter = Radius × 2 = 1.87 × 2 = 3.74

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Nancy 🤝🥂 Choudhary 👻🎀 2 years ago

44 cm surface area so the diameter is

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Dishant Katariya 2 years ago

What do you maen by parenkaima teeshu

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ANSWER

3.74444... can be written as 3.74 true or false

Posted by Samiksha J Jadhav Samiksha 2 years ago

CBSE > Class 09 > Mathematics

4 answers

Abhinav Nair 2 years ago

False as 4 is repeating every time so it will be 3.7 ( 4 in bar)

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Prabhav Vaidya 2 years ago

False because the bar should be on 4 to represent a non terminating number

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Vanshika Kumari 2 years ago

Because the right answer is 4.3

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Vanshika Kumari 2 years ago

False

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0÷2.what is value?

Posted by Ayush Gupta 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Abhinav Nair 2 years ago

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Vanshika Kumari 2 years ago

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If a equal to b then a² equal to

Posted by Khushi Gupta 2 years ago

CBSE > Class 09 > Mathematics

3 answers

Abhinav Nair 2 years ago

b²

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Asmita Mishra 2 years ago

a=b (a)^2=(b)^2 a^2=b^2

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Khushi Gupta 2 years ago

b²

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A water tanker carries 10,000 litres of water. It gives 4325.75 litres of water to building A and 3275.35 litres of water to building B. If 325.8litres of water leaks out on the road, how much water would be left in the tanker ?

Posted by Shrusti Pawar 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Shrusti Pawar 2 years ago

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What is the sum of 47×7

Posted by Zarfisha Sheikh 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Ridhima Jain 2 years ago

329

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Ch 10 ex 10.5

Posted by Jasmeet Kaur 2 years ago

CBSE > Class 09 > Mathematics

0 answers

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Find the volume of a if x-2 is a factor of ×²-5×a+6

Posted by Shalib Ansari 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Abhinav Nair 2 years ago

The question is wrong

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Aamuktha @2309 2 years ago

formula for roots of quadratic expression a x 2 + b x + c = 0 is = − b ± √ b 2 − 4 a c 2 a So for x 2 + 5 x − ( a 2 + a − 6 ) = ⇒ − 5 ± √ 25 + 4 ( a 2 + a − 6 ) 2 ⇒ − 5 ± √ 4 a 2 + 4 a + 1 2 ⇒ − 5 2 ± √ ( a + 1 / 2 ) 2 = − 5 2 ± ( a + 1 / 2 )

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1 + 1 2 jyu hota ahi

Posted by Shubha Pathak 2 years ago

CBSE > Class 09 > Mathematics

4 answers

Aarush Thakur 2 years ago

1 or 1=11 Hota he

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Shalib Ansari 2 years ago

Jese1or1 =11 hota hai

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Dikshika Rathi 2 years ago

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Manvi Bhatheja 2 years ago

Kyunmi use minus krne p zero aa jaata h But shayad tumhe smjh na aaye

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Formula of( a+b)³

Posted by Amrit Panwar 2 years ago

CBSE > Class 09 > Mathematics

3 answers

Aamuktha @2309 2 years ago

a³+b³+3ab(a+b)

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Dikshika Rathi 2 years ago

a³+b³+3ab(a+b)

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Manvi Bhatheja 2 years ago

A^3+b^3+3(a+b)^2 A very easy ☠️

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√2+√3 2

Posted by Ruhi Fatma 2 years ago

CBSE > Class 09 > Mathematics

0 answers

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The point -4.-3 means

Posted by Impana A 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Mayank Shelke 2 years ago

It means in which quadrant does it come ..... it comes in 3rd quadrants. 3rd quadrant means x will be in minus and y will be also in minus..

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Saurabh Yadav 2 years ago

Means 3rd quadrant

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The point -4,-3 meana

Posted by Impana A 2 years ago

CBSE > Class 09 > Mathematics

0 answers

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X+1/X=5 find X⁴+1/X⁴=?

Posted by Dev Darshan 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Ridhima Jain 2 years ago

527

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How many balls each of radius 2cm can be made by melting a big ball whose radius is 8cm

Posted by Anshika Gupta 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Ridhima Jain 2 years ago

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Mid point therom proof

Posted by Gautam Kumar 2 years ago

CBSE > Class 09 > Mathematics

1 answers

Arpita Panigrahi 2 years ago

How to find square roots of √2+√2/√2-√2

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How to solve MCQ😔😭

Posted by 🩷 🌼 2 years ago

CBSE > Class 09 > Mathematics

5 answers

🩷 🌼 1 year, 11 months ago

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0Thank You

Asmita Mishra 2 years ago

Jo questions hai uske concepts ko samjho aur clear Karo uske baad se MCQs easily solve ho jayega

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Dikshika Rathi 2 years ago

Run behind concept

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Akshra Meena 2 years ago

Jaise MCQ solve karte h waise solve karna h

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Pratish Yadav 2 years ago

What is the length of Indian coastline

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If two equal chords of a circle interest within the circle,prove that the line joining the point of intersection to the centre makes equal angles with the chords

Posted by Jennifer Hoipineng 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Shradha Sahio 2 years ago

Given, Let the chords be AB and CD AB=CD O centre Let the point of intersect be E To prove : angles with the chords are equal Construction: Join OL and OM bisecting AB and CD Proof: OL=1/2AB OM=1/2CD OL=OM OE=OE (common) Triangle OLE congruent to Triangle OME ( SSS congruency) angle OLE=angle OME (by C. P. C. T)

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🩷 🌼 2 years ago

Same doubt

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M and N is the mid point of AB and AC B is 90 degree

Posted by Vanshika Nagar 2 years ago

CBSE > Class 09 > Mathematics