Answer:
She lost $2550.
Step-by-step explanation:
She bought 37 meters at $750/m.
37 m * 750/m = $27,750
She paid $27,750
She sold 28 m at $900/m
28 m * $900/m = $25,200
She sold $25,200
$25,200 - $27,750 = -$2550
She lost $2550.
Answer:
<h3> y = 2x² - 4x - 6</h3>
Step-by-step explanation:
y + 4x + 6 = 2x²
-4x -4x
y + 6 = 2x² - 4x
-6 -6
y = 2x² - 4x - 6
Find the first derivatives:
.
Solve the system
:
. The second equation has solutions
and then
and you have two points
.
Find the first derivatives:
and calculate
![\Delta=\left| \left[\begin{array}{cc}24&-24\\-24&12y\end{array}\right]\right |=24\cdot 12y-(-24)^2=288y-576](https://tex.z-dn.net/?f=%5CDelta%3D%5Cleft%7C%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D24%26-24%5C%5C-24%2612y%5Cend%7Barray%7D%5Cright%5D%5Cright%20%7C%3D24%5Ccdot%2012y-%28-24%29%5E2%3D288y-576)
.
Since
and
,
is a point of maximum and
.
Since
and
,
is a point of minimum and
.
To find this answer we have to do these steps below
1. Find the amount of money that LaShawn earns in an Hour
We have to do 60/8 which is 7.5
LaShawn earns 7.5 dollars in an hour
2. Multiply 7.5 by 35
The answer to that is 262.5 dollars
Therefore the answer is 262.5 dollars
I hope this helped, if it's wrong, blame me
Ps. Brailents would help a LOT
This is a perfect square trnomial
(a+b)²=a²+2ab+b²
we see that a=5x and b=2
(5x)²+2(5x)(2)+2²=0
factor
(5x+2)²=0
set equal to zero
5x+2=0
5x=-2
x=-2/5
