Area= (length) x (width) = (4) (2x - 4) = 8x - 16
Perimeter = (2 lengths) + (2 widths) = (8) + (4x - 8) = 4x
Answer:
Step-by-step explanation:
We want to factor the expression 
.
First, notice that this is in quadratic form. In other words, both the exponents have even power.
Therefore, we can make a substitution to simplify the expression.
So, let’s let 
.
Our expression is the same as:
Substitute:
Now, we can factor like normal. We can use -1 and -4. Therefore:
We can now substitute back u:
Both of these can be factored furthered using the difference of two squares:
Therefore, we will have:
And we are done!
Do you remember how to graph an equation ?
There are two of them here. Each one is a straight line on the graph. The "solution" of the pair of equations is the point where the two lines cross.
It might help you draw the graphs if you solve each equation for 'y' first.
-- The first one is y = -x - 4 .
-- The second one is y = -3x - 6 .
-- Graffum both.
-- Find the point where they cross.
0.06(x-6000) = 2745
0.06x - 360 = 2745
0.06 = 2745 + 360
0.06 = 3105
x = 3105 / 0.06
x = 51750
the answer is 51750, hope this helps
Answer:
-(-x² + 50x - 9); x² -50x + 9
Step-by-step explanation:
You find the opposite of a polynomial P by changing the sign of every term in P.
P = -x² + 50x - 9
One way to get -P is to put a negative sign in front of the whole expression.
-P = -(-x² + 50x - 9)
Another way is to distribute the -1 inside the parentheses.
-P = x² -50x + 9
