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CBSE Class 10 Free Doubts and Solutions

CBSE - X - Mathematics

If the areas of two similar triangles, ∆PQR and ∆XYZ are 162sq.cm and 200sq.cm respectively. Find the ratio of their perimeters.

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Asked by rizwan2959 21st October 2018, 12:49 AM
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CBSE - X - Mathematics

 find the 25th term of AP = -5,-5/2,0,5/2

Asked by mdraishbst 20th October 2018, 5:28 PM
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CBSE - X - Mathematics

if x=3 is aroot of the equation x2-x+k=0,find the value of p so that the roots of the equation x2+k(2x+k+2)+p=0 are equal.

Asked by mdraishbst 20th October 2018, 5:25 PM
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CBSE - X - Mathematics

page 363 Question # 15 Prove that no value of x  exists for which the points A(x,4) , B(1,-2) and C(-3,2) form an isosceles triangle at the vertex B.

Asked by miniprasad 20th October 2018, 5:14 PM
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CBSE - X - Mathematics

Page 363 Question # 7 If G is the centroid of a triangle ABC and O is any other point, then prove that : OA2 + OB2 + OC2 = GA2 + GB2 + GC2 + 3 GO2

Asked by miniprasad 20th October 2018, 5:10 PM
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CBSE - X - Mathematics

Page 362 Question # 6 The vertices of a triangle are (-4,2), (9,7) (2,b) and its centroid is (-1,3). Find the values of a and b.

Asked by miniprasad 20th October 2018, 5:05 PM
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CBSE - X - Mathematics

Page 362 Qtn : 3 Find out the distance between the following pairs of points: (a cos α , a sin α) and ( a cos β, a sin β ) (a m1 2, 2 am1) and a m1 2, 2 am1 (6a, a/2) and (-4a,5a/2)

Asked by miniprasad 20th October 2018, 5:02 PM
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CBSE - X - Mathematics

Page 353. Question : 12 Prove that the diagonals of a rectangle bisect each other and are equal.

Asked by miniprasad 20th October 2018, 4:28 PM
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CBSE - X - Mathematics

Page 353. Question : 10 The line joining the points (3, -2 ) and -3,-4) is trisected equally. Find the coordinates of the points of trisection

Asked by miniprasad 20th October 2018, 4:25 PM
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