Daily Practice · Higher Plus
Daily Practice - Higher Plus
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23rd July 1991
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2, one 10 units wide with density 0.6. How many values in total?
- 2Surds3 marks
Expand and simplify (7 + sqrt(3))(7 - sqrt(3)).
- 3Factorising Harder Quadratics3 marks
Solve 5x^2 + 28x + 15 = 0.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 4 m/s to 19 m/s over 10 seconds. Work out the acceleration.
- 5Proof of the Circle Theorems2 marks
In a circle theorem proof, a step uses the fact that a tangent meets a radius at the point of contact. State the reason being quoted.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1991, including the monthly compilation PDF.