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    • Posted by Anshman Modi 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Namrata Jindal 4 years, 11 months ago

    Mean of 5 numbers? is 30. So sum of the numbers will be 5*30=150. If one number is excluded, Mean of 4 numbers was 28. So sum will be 4*28=112. Excluded number?=150-112=38.

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    • Posted by Dinesh Kumar 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Vedika Šäbłè 4 years, 11 months ago

    √2*√2 = 2

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    Yogita Ingle 4 years, 11 months ago

      √2(√2) = √4 = 2

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    • Posted by Trupti Saike 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Gaurav Seth 4 years, 11 months ago

    SHORT FORMULA
    NEW MEAN =MEAN - THE COMMON NUMBER DECREASED
    =40-12
    =30

    Detailed solution :

    Mean=sum of total observation /total number of observation
    42=sum of total observation /10
    420=sum of total observation
    Now each member of the observation is decreased 12
    =12*10=120
    New sum of total observation =420-120
    =300
    New mean =300/10
    =30

     

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    • Posted by Pritam Giri 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Shriya Samaga 4 years, 11 months ago

    Volume of cone= 1/3×22/7×R²×H =1/3× 22/7×3.5×3.5×12=154cm²

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    • Posted by Shivappa B S B 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Indraneel Dutta 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Hariom Dalal 4 years, 11 months ago

    Almost full because in 10th everything is based on its base i.e 9th & if student is weak in studies than atleast 30% which includes common questions. Actually there is a choice now for weak students they can choose computer as optional & maths(basic) for proceedings.

    1Thank You

    Abhinav Prience 4 years, 11 months ago

    At least 10 to 20 percent

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    • Posted by Geeta Masti 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
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    • Posted by Geeta Masti 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Yogita Ingle 4 years, 11 months ago

    Let us write multiples of 4 and 6 first,

    4 : 4,8,12,16,20,24,28,…..

    6: 6,12,18,24,30,36,42…..

    From the above two expressions you can see, 4 and 6 have common multiples as 12 and 24. They may have more common multiple if we go beyond. Now, the smallest or least common multiple for 4 and 6 you can see here is 12. Therefore, 12 is the L.C.M of 4 and 6. Also, find to learn LCM of two numbers here.

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    • Posted by Sanchit Shinde 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Geeta Masti 4 years, 11 months ago

    How to find L C M please teach the lesson

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    • Posted by Pravasa Das 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Pravasa Das 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Sima Verma 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Yogita Ingle 4 years, 11 months ago

    Before discussing Euclid’s Postulates let us discuss a few terms as listed by Euclid in his book 1 of the ‘Elements’. The postulated statements of these are:

    • Assume the three steps from solids to points as solids-surface-lines-points. In each step, one dimension is lost.
    • A solid has 3 dimensions, the surface has 2, the line has 1 and point is dimensionless.
    • A point is anything that has no part, a breadthless length is a line and the ends of a line point.
    • A surface is something which has length and breadth only.

    It can be seen that the definition of a few terms needs extra specification. Now let us discuss these Postulates in detail.

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    • Posted by Pradeep Kumar 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Krishna Gond 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Sheeba Haque 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Shivam Raj 4 years, 11 months ago

    √3×√4=√12=2√3

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    • Posted by Ankit Kumar 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Anjali Patel 4 years, 11 months ago

    26

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    • Posted by Vimala Arul 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Trupti Saike 4 years, 11 months ago

    Yes it is correct

    0Thank You

    Rakhi Vasodiya11 4 years, 11 months ago

    A no. Which come more is called mode. For eg. 2,4,6,5,2,4,2,7,2 in this 2 comes more than other digits so 2 is mode of this data

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    • Posted by Ali Ilyan 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Anurag Choudhary 4 years, 11 months ago

    The equation whose highest power of variable is 1 is called linear equatin

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    • Posted by Komal Varshney 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Kap Sharma 4 years, 11 months ago

    Given : ab//dc and angle A=55° and angle B=70° The sum of angles of non-parallel sides are 180° AngleA+angle D=180° 55°+D=180° D=180°-55° D=125° Angle B+Angle C=180° 70°+C=180° C=180°-70° C=110°

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    • Posted by Rizwan Rajput 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Shivam Raj 4 years, 11 months ago

    2=2/1=(2×7)/(1×7)=14/7 3=3/1=(3×7)/(1×7)=21/7 So,six rational number between 2 and 3 are:- 15/7,16/7,17/7,18/7,19/7,20/7

    1Thank You

    Talented Boy Show 4 years, 11 months ago

    900000%

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    • Posted by Jeevan Kumar 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Ajay Chauhan 4 years, 11 months ago

    CSA of cone =πrl Given: area=88cm sq. Height= 14cm To find: diameter Solution: here height is slant height which means lenght =height So, CSA of cone =22/7*r*14 88=22/7*r*14 88=308/7*r 88*7/308=r 2cm= r So diameter is 4cm.

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    • Posted by Harsh Malik 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
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    • Posted by Ankit Raj 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Ankit Raj 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Saliyahsumaiyahshaikh Sumaiyah Shaikh 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Rakhi Vasodiya11 4 years, 11 months ago

    In 2√21 , √21 is 4.6 so, 2×4.6=9.2 cm sq. So, 6×9.2= 15.2 sq.cm

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    • Posted by Pranjal Singh Thakur 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Abhishek Mauryavanshi 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Vaishnavi Patel 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Rakhi Vasodiya11 4 years, 11 months ago

    Then you can easily find area using heron's formula

    0Thank You

    Rakhi Vasodiya11 4 years, 11 months ago

    Area of a side equal to 18 cm and area of second side equal to 10 cm given perimeter equal to 42 cm. Perimeter = a+b+c 540=18+10+c 540=28+c 540/28=c So, c=30 cm

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    • Posted by Gyan Prakash Tiwari 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Sarita Attri 4 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

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