Given that \(81\times 2^{2n-2} = K, find \sqrt{K}\)
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Past Questions
1,853 questionsIf \(y = \sqrt{ax-b}\) express x in terms of y, a and b
Simplify \(\frac{2-18m^2}{1+3m}\)
Given that m = -3 and n = 2 find the value of \(\frac{3n^2 - 2m^3}{m}\)
In the diagram, POR is a circle with center O. ∠QPR = 50°, ∠PQO = 30° and ∠ORP = m. Find m.
Calculate the value of Y in the diagram
In the diagram above, |XR| = |RY| = |YZ| and ∠XRY = ∠YRZ = 62o, Calculate ∠XYZ
Which of the following figures have one line of symmetry only? I. Isosceles triangle II. Rhombus III. Kite
The interior angle of a regular polygon is twice the exterior angle. How many sides has the polygon?
A group of 11 people can speak either English or French or Both. Seven can speak English and six can speak French. What is the probability that a person chosen at random can speak both English and French?

The pie chart illustrate the amount of private time a student spends in a week studying various subjects. use it to answer the question below
If he sends \(2\frac{1}{2}\) hours week on science, find the total number of hours he studies in a week
The pie chart illustrate the amount of private time a student spends in a week studying various subjects. use it to answer the question below
Find the value of 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
If \(K\sqrt{28}+\sqrt{63}-\sqrt{7}=0\), find K.
Simplify log\(_7\) 8 - log\(_7\) 2 + log\(_7\) 4.
The side of a rhombus is 10cm long, correct to the nearest whole number. Between what limits should the perimeter P lie?
The side of a square is increased from 20cm to 21cm. Calculate the percentage increase in its area
Evaluate \(3.0\times 10^1 - 2.8\times 10^{-1}\)leaving the answer in standard form