That's great!
Maybe you should use that to help others, in person, on video call, in a group, your family, or even on Brainly!
: ]
The combined distance between CD and DE is CE, so...
2x+4 + 6 = x+14 Simplify like terms..
2x + 10 = x + 14 Subtract x from both sides..
x + 10 = 14 Subtract 10 from both sides...
<h2><u><em>
x = 4</em></u></h2>
Proof: 2 (4) + 4 + 6 = 4 + 14
8 + 10 = 18
<em> Check</em>
He should need 45 more gallons. 60/4=15 15gallons for every 1/4 of the tank. 60-15=45

First compute the first-order partial derivatives and find the critical points.


Both first order derivatives vanish at

.
Computing the Hessian, we get

We have

, which means

is an extremum of

. Since

, this extremum is a local maximum of

with a value of 21.