equations, question 1, grade 9

24/06/2016 Grade 9 2,524

1)

a) The length of a rectangle is double its width and its perimeter is 48. Calculate its dimensions.

b) Suppose that in this part the length is increased by a value "m" ; while the width remains as calculated in part a.

For what values of m will the area of the rectangle be greater than 40?