Sam spends exactly £20 on petrol. The petrol costs £1.45 per litre.
Work out the number of litres of petrol she buys.
Give your answer to 1 decimal place.

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.