There are 20 sweets in a bag, 5 are white and 15 are black. What is the probability that a sweet chosen at random will be white?
5 out of the 20 sweets in the bag are white. This could be written as 5/20. This is the probability. However, this can be simplified to 1/4 'one quarter' or 0.25.
TD
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Solve algebraically: 6a + b = 16 ..... 5a - 2b = 19
The graph of y = x^2 – 1 is translated 3 units to the left to give graph A.The equation of graphA can be written in the form y=x^2 +bx+c Work out the values of b and c.
Solve algebraically: 6a + b = 16 5a - 2b = 19