Rectangle
try it with a briefcase and put a cardboard in it (of cours you don't have a brief case, it has gone mostly extinct)
ok, try it with a laptop
close the laptop
how can you read what I'm typing when you close your laptop
close the laptop
slide a paper into the middle of the opening
open laptop
surprise, it is a rectangle
rectangle
L +2w = 500
a = lw
a) l = 500 -2w
.. a = (500 -2w)*w
b) The zeros of the above equation are w=0, w=250. The vertex of this quadratic is on the line of symmetry, halftway between the zeros, at w=125 ft.
c) a = (500 -2*125)*125 = 31,250 . . . . square feet
Answer:
1
Step-by-step explanation:
x-1+ 1 /5*( x-1)=0
(x-1)*6/5=0
x=1
Answer:
16 ounces each
Step-by-step explanation:
1 gallon equals 128 ounces so 1.5 gallons would be 192 ounces. Divide 192 by 12 and you'll get 16.
The x coordinate stays the same but y coordinate changes sign so it will be a reflection in the x-axis.