exam Maths Puzzle Numerical Ability

FIND THE DOMAIN OF THE FUNCTION.
f(x)= 2 over x+7

Read Solution (Total 0)

exam Other Question

a water tank can be filled in 20 hours by an inlet pipe and emptied in 25 hours by an outlet pipe. how long will it take to fill the tank if both pipes are left open? find the z score that separates the middle 63% of the distrubution from the area in the tails of the standard normal distribution
The z scores are___