exam Maths Puzzle Numerical Ability

please help me solve the equation 2x^-1/2 = 8

Read Solution (Total 0)

exam Other Question

Here is a question I really am lost on! I don't know what to do and am just confusing myself more. Can someone Please HelP???
In the early 1990's Iomega came out with a portable Mr ree is 4 years older than ms ree, but their actual ages are a mystery, if they tell you that the summ of the squares of their ages is 3706, how old are they?