Factorise this formula completely 2kx + 6ky + 4kz
2kx + 6ky + 4kz
=2k (x + 3y + 2z)
SK
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All answers ▸Three whole numbers are each rounded to the nearest 10. The sum of the rounded numbers is 70. Work out the maximum possible sum for the original three numbers.
White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.
Factorise this quadratic = 8x^2 + 2x -3
The probability that it rains on a given day is 0.15. The probability that a football match is cancelled when it rains is 0.65. If it doesn't rain, the probability that the match is not cancelled is 0.95. What is the chance that the match is cancelled?