exam
Maths Puzzle
Numerical Ability
For the quadratic equation x^2 + kx +7 =0, if 3+sqrt2 is a root, what is the value of k ?
I said 6 but my teacher marked it wrong. Please help me :)
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exam Other Question
a cylindrical tin of particular volume is to be made using as little material as possible. find the ratio of the height to the radius(the tin is closed both ends)
What is the measure of rotation with respect to two lines that intersect to form a 5 degree angle?
choices:
5
10
20
85