How to evaluate t- u/v when t = -1, u= -3 and v= 1/2

Simplify the expression 10/11(22z) + (a+5) -1

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Find each value of the five-number summary for this set of data. [note: type your answers as numbers. do not round.] 46, 19, 38, 27, 12, 38, 51 minimum maximum median upper quartile lower quartile