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Simplify: \(\frac{5}{x - y} - \frac{4}{y - x}\)
Expand (2x - 5)(x - 3)
A boy measured the length and breath of a rectangular lawn as 59.6m and 40.3m respectively instead of 60m and 40m. What is the percentage error in his calculation of the perimeter of the lawn?
Simplify Log\(_{10}\)4 + Log\(_{10}\)25
Simplify 56x\(^{-4}\) \(\div\) 14x\(^{-8}\)
Simplify: \((2\frac{1}{6} - 1\frac{2}{3}) \div 2\frac{2}{3}\).
Convert the decimal number 89 to a binary number
The 6th term of a G.P is \(\frac{-2}{27}\) and its first term is 18. What is the common ratio?
Find the median of the following numbers 2.64, 2.50, 2.72, 2.91 and 2.35.
The mean of 20 observations in an experiment is 4, lf the observed largest value is 23, find the mean of the remaining observations.
What is the mode of the numbers 8, 10, 9, 9, 10, 8, 11, 8, 10, 9, 8 and 14?
The bearing of two points Q and R from a point P are 030° and 120° respectively, lf /PQ/ = 12 m and /PR/ = 5 m, find the distance QR.
In the diagram above, ∠PRQ = 90°, ∠QPR = 30° and /PQ/ = 10 cm. Find y.
Without using tables, find the value of \(\frac{\sin 20°}{\cos 70°} + \frac{\cos 25°}{\sin 65°}\)
Which of the following angles is an exterior angle of a regular polygon?
In the diagram above, the value of angles b + c is