exam Maths Puzzle Numerical Ability

Solve by factoring.

1. 3a squared - 36a + 81 = 0

2. 5x squared - 45 = 0

3. 2a squared - a - 21 = 0

4. 3n squared - 11n + 10 = 0

5. 2x squared - 7x -9 = 0

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please help to graph on a number line :

x + 4 < or equal to 2 or x - 4 is NOT < or equal to -1, d = reals A company manufacturs three types of wooden chairs; the Kitui, the Goa, and the Santa Fe. To make a Kitui chair requires one hour of cutting time, 1.5 hours of assembly time, and o