1/2% of 4000 miles find percent and show work

  20 miles

Step-by-step explanation:

It is useful to remember that % means /100, and that 1% = 1/100.

Here, you want 1/2% × 4000. The associative property of multiplication lets you rearrange this to ...

  (1/2)% × 4000 = (1/2) × 1% × 4000

  = 1/2 × (1/100 × 4000) = 1/2 × 4000/100

  = 1/2 × 40 = 20 . . . miles

If you refuse to be intimidated by percentages, you can do this math in your head.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk