80,000 pounds is bigger than 9 tons. If you convert 80,000 pounds to tons, it will be equal to 40 tons.
<em>Hope it helps</em>
we are given

standard form:
We will complete x , y and z square
make all x , y and z terms together






surface:
It is an infinite paraboloid
graph:
M<AVC = 43 degrees, because it is the angle's measure is 1/2 of the arc's
<em><u>hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>will</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>