Answer:
x = 
Step-by-step explanation:
Given
A =
xy
Multiply both sides by 2 to clear the fraction
2A = xy ( divide both sides by y )
= x
Answer:

Step-by-step explanation:
The axis of symmetry can be calculated using the formula:

First we must determine a and b from the quadratic:
. This is in standard form, with the highest power first in descending order.
Standard form is also: 
If we compare this to the quadratic given, we can conclude that:

Substitute the values for a and b into the formula.

Multiply in the denominator.

Divide.

This can also be determined from the graph. It is the x-coordinate of the vertex or the maximum/minimum. It divides the quadratic into 2 symmetrical halves.
I hope this helps you
8m+7m+4n-2n
15m+2n
Answer:
<BCF is the other alternate exterior angle.
Step-by-step explanation:
If you can, let me know if this is correct. :)
Answer: 
Step-by-step explanation:
You know that the formula to find the sum of a finite geometric series is:

Where
is the number of terms,
is the first term and
is the common ratio (
).
The steps to find the sum of the first 12 terms of the given geometric serie, are:
1. Find the common ratio "r". By definition:

Then:

2. Finally, knowing that:

You must substitute values into the formula.
Then you get:
