5. Calculate the perimeter of given polygons correct to one decimal place (a) A triangle with vertices P(-2,3).Q(5, -4) and R(1,8)
(b) A parallelogram with vertices A(-10,1), B(6, -2).C(14,4)
and D(-2,7)
(c) A trapezium with vertices E(-6, -2), F(1, -2), G(0,4) andH( -5,4)

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression