prove that root 5-3 root 2 is an irrational number

what is the formula of mean , median , mode ?

what is class, class size, class interval and class marks????? plz plz plz answer fast......or else i will fail.......plz

1.if two isosceles triangle have a common base,prove that the line segment joining their vertices bisects the common base at right angles.

2.show that the sum of three medians of a triangle is less than its perimeter.

prove that the sum of any two sides of a triangle is greater than twice the length of median drawn to the third side

Prove that a cyclic parallelogram is a rectangle.

if both x-2 and x-1/_{2} are factors of px^{2}+5x+r show that p=r

if two parallel lines are intersected by a transversal,then prove that bisectors of the interior angles form a rectangle.

Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles, then it is a square.

pls explain.

Find the missing frequencies in the following frequency distribution whose mean is 50

X

10

30

50

70

90

Total

F

17

fi

32

F2

19

120

Prove that the quadrilateral formed by internal angle bisectors of a cyclic quadrilateral is also cyclic.

Three cubes whose edges measure 3cm,4cm,5cm respectively to form a single cube.Find its edge.Also find the surface area of the new cube.

prove that n2-n is divisible by 2 for every positive integer n.

if a^{x }=b , b^{y }=c , c^{z }=a then prove that xyz=1

prove that root 5-3 root 2 is an irrational number

what is the formula of mean , median , mode ?

what is class, class size, class interval and class marks????? plz plz plz answer fast......or else i will fail.......plz

1.if two isosceles triangle have a common base,prove that the line segment joining their vertices bisects the common base at right angles.

2.show that the sum of three medians of a triangle is less than its perimeter.

prove that the sum of any two sides of a triangle is greater than twice the length of median drawn to the third side

Prove that a cyclic parallelogram is a rectangle.

if both x-2 and x-1/

_{2}are factors of px^{2}+5x+r show that p=rif two parallel lines are intersected by a transversal,then prove that bisectors of the interior angles form a rectangle.

Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles, then it is a square.

pls explain.

Find the missing frequencies in the following frequency distribution whose mean is 50

X

10

30

50

70

90

Total

F

17

fi

32

F2

19

120

Prove that the quadrilateral formed by internal angle bisectors of a cyclic quadrilateral is also cyclic.

Three cubes whose edges measure 3cm,4cm,5cm respectively to form a single cube.Find its edge.Also find the surface area of the new cube.

prove that n2-n is divisible by 2 for every positive integer n.

if a

^{x }=b , b^{y }=c , c^{z }=a then prove that xyz=1