5
7
8
9
Correct answer is C
\(104_x = 68\\
1 \times x^2 + 0 \times x + 4 \times x^0 = 68\\
x^2 = 68 - 4; x^2 = 64\\
x = \sqrt{64}=8\)
If the function f is defined by f(x + 2) = 2x\(^2\) + 7x - 5, find f(-1)...
Find the volume of a cone of radius 3.5cm and vertical height 12cm. [Take π = 22/7]...
Evaluate \(\frac{(0.14^2 \times 0.275)}{7(0.02)}\) to 3 decimal places. ...
Using the histogram, estimate the mode of distribution ...
In the diagram, O is the centre of the circle. If < NLM = 74\(^o\), < LMN = 39\(^o\) and < ...
Simplify \(\frac{x(x + 1)^{\frac{1}{2}} - (x + 1)^{\frac{1}{2}}}{(x + 1)^{\frac{1}{2}}}\) ...
Simplify \(\frac{3(2^{n+1}) - 4(2^{n-1})}{2^{n+1} - 2^n}\) ...
The diagonal of a square is 60 cm. Calculate its peremeter ...