Question

The width of a rectangular mirror is 3/4 the measure of the length of the mirror if the area is one 192 in.² what are the length and width of the mirror

Answer 1

hello :
let : x the width and y the length ( y ≥ x )
x = (3/4) y ... (1)
xy = 192 ....(2)
subsct in (2) :
((3/4) y)y = 192
3y² = 768
y² = 256
y² = 16²
y = 16.. (because : y > 0)
so : x = (3/4) (16) = 12