the expression 2(l+w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is 2/7 unit and the width is 3/7 unit, what is the perimeter of the rectangle in units?​

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n