The triangle ABC above shows the angle of elevation of the top, B, of a tower, BC, from A, to be 30°. AB = 40 m. The length of BC is

The balances listed below appear in a trader's trial balance. The item that is to be included in the Profit and Loss Account is

Which of the following is the Highest Common Factor of 18, 24 and 36?

What would be the best materials to use for making the coil and the core of an electromagnet?

The site of reabsorption of MOST of the water from the filtrate.

All of these are properties of carbon monoxide EXCEPT for:

The sharp-tasting compound in vinegar is:

A lens forms a real image of magnification ×3.Which one of the following statements is NOT true?

All the following are special purpose software EXCEPT

When a trial balance does NOT agree, the difference is placed in a

The scientific name of an organism is derived from its:

When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:

Cooking food improves all of these EXCEPT for:

To make fertilisers and explosives we need:

Which one of the following comparisons of inhaled and exhaled air is correct?

If an increase of 20% will change the price of an item to $480, what is the original price of the item?

Enzymes are called biological catalysts because they:

The equation of the line which passes through the point (0, 2) and has a gradient of ¹/₃ is

The gross profit of a firm is $3,600, bad debts $100, rent paid $120, rent prepaid $20, general expenses $80 and discount received $110. The net profit is