A ball is dropped from h metres. After each bounce the ball reaches 60% of its previous height. After its third bounce it reaches a height of 0.648m. Find h.
3m
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15
AB is the diameter. O is the centre. Find angle CAB
70 degrees
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15
Find angle BAD.
131 degree
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15
A car travels at 50mph, correct to 1 significant figure. It covers a distance of 300 miles, correct to 2 significant figures. Calculate the least possible time taken.
5 and 4/11 hours
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15
Simplify
â2
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15
Work out
128
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15
Work out
20
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baam
Lose 25 points!
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magnet
Take 25 points!
Okay!
rocket
Go to first place!
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thief
Give points!
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15
Show that the expression is always a multiple of 4 for all positive integer values of n.
4(n+3)
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lifesaver
Give 10 points!
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gold
Win 50 points!
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fairy
Take points!
5
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25
thief
Give points!
5
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15
A and B are similar. The volume of A is 200cmÂģ. Find the volume of B.