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
15
What is an expression?
(x+4)^2
15
The surface area of A is 500cm² The surface area of B is 2000cm² The length A is 6cm. Find the length of B
12cm
15
Show that the expression is always a multiple of 4 for all positive integer values of n.
4(n+3)
15
Factorise
(11x+10)(x-3)
15
Work out
20
15
Work out
128
15
Find angle BAD.
131 degree
15
Find angle ADC
94 degree
15
What percentage of the jam sold is in small jars?
74%
15
Simplify
√2
15
AB is the diameter. O is the centre. Find angle CAB
70 degrees
15
AB is the diameter. O is the centre. Find angle ABC
20 degrees
15
A and B are similar. The volume of A is 200cm³. Find the volume of B.
3792.6cm³
15
Can a 15cm rod fit into cube ABCDEFGH?
Yes (AG length is 17.32cm)
15
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.