Answer:
price of a sandwich = $7.50
Step-by-step explanation:
let the price of a sandwich be $x.
entire order cost= cost of chips+ 5×cost of sandwiches
= 1.25 + 5x
1.25 + 5x = 38.75
5x=38.75-1.25
5x=37.50
x=7.50
Yes. A triangle with three sides given can be cut out.
We are given number 1,764.
And a factor tree of 1,764 is show in the diagram.
First 1764 is factored into 2 and 882.
Then 882 is factored to 2 and 441.
441 is factored to 9 and 49.
And finally 9 is factored to 3 and 3.
49 is factored to 7 and 7.
<em>So final factors we got 3 × 3 × 7 × 7.</em>
3 × 3 could be written as 3^2 and
7 × 7 = could be written as 7^2.
<h3>Therefore,

is the the simplest form.</h3>
The Lagrangian is

Set the partial derivatives equal to 0:

Notice that

, or

.
Since

, it follows either

, and so there are two critical points at (1, 1) and (-1, -1). Both of these points give the same value of

. And since the Hessian matrix for

is positive-definite, these points correspond to minima.

has no maximum value on

.
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