An old lady taking her elephant for a walk beside the river was dismayed to see it
falling over the steep, slippery bank towards
the water. Luckily it was harnessed to a
strong rope, and the lady managed to take
several complete turns of the rope around a
tree and hold on tightly enough to keep it
from the waiting crocodiles.
Each turn of the rope around the tree reduced the pull by 70%. Given that
the old lady, who is really quite strong, can support a weight of at most
50kg, while her elephant weighs 1 tonne, find the smallest number of
complete turns which the old lady could have used.
If she had used half a turn less could she still have held the elephant?

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step-by-step explanation:

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: