Answer:
b)
Step-by-step explanation:
$63.99 *0.85=$54.40 ($54.3915)<span> rounded = Sale Price
$63.99-54.40= </span> $9.60 $9.59 rounded = Discount
Answer: 2 x2=4 or 2x-2=-4
Step-by-step explanation: its simple math
Let the length be x and the width be y:
Area=x*y=600
thus
x=600/y
Perimeter=2(L+W)
100=2(x+y)
substituting the value of x we obtain:
100=2(600/y+y)
solving for y we shall have:
50=600/y+y
50y=600+y^2
thus
y^2-50y+600=0
solving the quadratic we obtain:
y=20 or y=30
thus the length=30 ft and the width=20 ft
