If the rental skis at Mt Buller were lined up end to end, they would reach from the summit of Mt Buller all the way down to the entry gate at Mirimbah. The average length of a downhill ski is 1.5 m and the distance from the Mt Buller summit to Mirimbah is 18.3km . How many rental skis are there?

There are 12,200 rental skis

Step-by-step explanation:

The distance the rental skis would reach if they were lined up end to end = From Mt Buller summit to Mirimbah

The average length of each downhill ski, l =  1.5 m/ski

The distance from Mt Buller summit to Mirimbah, D = 18.3 km = 18,300 m

The number of rental skis at Mt Buller, n = D/l

∴ n = 18,300 m/(1.5 m/ski) = 12,200 skis

The number of rental skis at Mt Buller, n = 12,200 skis

(We have that there are two skis per pair, therefore, the number of pairs of skis at Mt Buller = 12,200 ski/2 = 6,100 pairs of skis)

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)