Answer:
they saved $10.29
Step-by-step explanation:
Answer:

Step-by-step explanation:
We are given the following in the question:
Area of rectangle = 81 square meter.
Let l be the length of the rectangle and b be the breadth of rectangle.
Then, we can write,

Perimeter of rectangle =

Putting values, we get,

9514 1404 393
Answer:
(x, y, z) = (1/3, 2/3, 1)
Step-by-step explanation:
We can use the first equation to write an expression for x that can be substituted into the other equations.
x = 1 -y
2(1 -y) -y +z = 1 ⇒ -3y +z = -1
(1 -y) +2y +z = 8/3 ⇒ y +z = 5/3
Subtracting the first of these equations from the second gives ...
(y +z) -(-3y +z) = (5/3) -(-1)
4y = 8/3
y = 2/3
z = 5/3 -y = 1
x = 1 -y = 1/3
The solution is (x, y, z) = (1/3, 2/3, 1).
Answer:
The correct answer is D because for example...
Step-by-step explanation:
If b squared minus 4ac is non-negative, so at 0 or greater, we have at least one real solution. If it's less than 0, if it's negative, we have no real solutions!
Hope I was able to help, and I hope you Have a good day! :)