Question

Solve for x

3x-y=3

9x-3y=9

is the theorem of chapter set important???

8th class maths

If tanA =1/√7 find value of cosec2A-sec2A/cosec2A+sec2A

Prove that the diagonals of a rectangle are equal in length

Find the area of triangle with side 5,6 and root13.

theorem 10.5

why we put b=3

Why not b=9

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Given that P(A)=1/2 P(AU B)= 3/5 P(b)=k if A and B one mutually exclusive

slove 

Draw the graphs of the equations x+y-10=0 and x-y+4=0 on the same graph paper