The side of a rhombus is 10cm long, correct to the nearest whole number. Between what limits should the perimeter P lie?
Simplify log\(_7\) 8 - log\(_7\) 2 + log\(_7\) 4.
If \(K\sqrt{28}+\sqrt{63}-\sqrt{7}=0\), find K.
From a set \(A = [3, \sqrt{2}, 2\sqrt{3}, \sqrt{9}, \sqrt{7}]\), a number is selected at random. Find the probability that is a rational number
