Two processes for hydraulic drilling of rock are dry drilling and wet drilling. In a dry hole, compressed air is forced down the drill rods to flush the cuttings and drive the
hammer. In a wet hole, water is forced down. As part of an analysis to determine the
cost of drilling a hole, an experiment was conducted in the Great-Karoo near Graaff-
Reinet to determine whether the time it takes to dry drill a distance of 5 meters in rock
increases with the depth at which drilling begins. The results for one portion of the
experiment are shown in Table 1.

Solve 2x+y=3 x+y=5 in substitution method

Write the following as a base and exponent

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?