What is the difference between type i error and type ii error?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Find the value of the variable and the length of each secant segment.

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64