A ladder 16m leans against an electric pole. If the ladder makes an angle of 65^o with the ground. How far up the electric pole does its top reach   

Simplify $\frac{20}{5\sqrt{28}-2\sqrt{63}}$

The temperature in a chemical plant was  –5^oC at 2.00am . The temperature fell by 6^oC and then rose again by 7^oC. What was the final temperature?

Which of the following is not a measure of central tendency?

In the diagram $\left| XY \right|=12cm,\left| XZ \right|=9cm,\left| ZN \right|=3cm$ and $\left| ZY \right|=$ calculate $\left| MY \right|$ 

A rectangular carpet 2.6m long and 2.4 wide covers 5% of rectangular floor. Calculate the area of the floor.

The value of three angles at a point are 3y - 45^o, y + 25^o and y^o. Find the value of y

In the diagram, what is x+ y in term of z ?

If  P = { 1,3, 5, 7,9} and Q = {2, 4, 6, 8, 10} are subsets of a universal set U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what are the elements of $P'\cap Q'$

The wheel of a tractor has diameter 1.4m, what distance does it cover in 100complete revolution? [Take $\pi =\tfrac{22}{7}$]