ICSE − Q & A

does the interval need to be continuous even while drawing an ogive??

Today KKR or KXIP

http://www.respaper.com/sdfg/1926-pdf.html Q6)a

When a question is asked upto 2 significant figures, do we have to round off?
Like upto 2 significant figures of
4.96

In graph when ur told to find the perimeter of a figure....do we use distance formulae or pythagoras theorem to find the slant lengths?Also can someone tell a list of figures that can come?

In what format do we have to write the equation found?  
for e.g.. 
i) 2x-3y+1=0
ii)3y=2x+1 ; or;
iii)2x-3y=-1?

Circles... 1) prove: The bisectors of the angles formed by producing the opposite sides of a quadrilateral(provided they are not equal) intersect at right angle.

2) two circles of unit radius touch each other and each of them touches internally a circle of radius 2 units. Find the radius of the circle which touches all the 3 circles.

3) Prove that the feet of perpendiculars drawn from a point on the circumcircle of a triangle on the sides are collinear.

http://www.respaper.com/sdfg/8493-pdf.html 10 b ....plz solve it

can anyone help in remembering the concept of sales tax ....
plz. i am confused in doing the sums

If b is the mean proportion of a and c, p.t. a^2-b^2 +c^2 / a^-2 - b^-2 + c^-2 = b^4