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The cost of a mirror is directly proportional to the square of its width. A mirror of width 40 cm costs $24. Work out…
A café sells hot drinks. On Monday it sells 80 teas, 60 coffees and 40 hot chocolates. On Tuesday it sells 70 teas, 9…
f(x) = 2 - 3x Find
Light travels at a speed of 3 × 10⁸ m/s. Calculate the time it takes for light to travel 6km. Give your answer in sta…
One molecule of water is made up of two atoms of hydrogen and one atom of oxygen. The mass of one atom of hydrogen is…
Evaluate 12+8÷(9-5).