Answer: m=n=3
Step-by-step explanation:
Reflecting across the y=0, in other words, the x-axis, means

So, 
This gives us the system

Do solve this you use PEMDAS. This stands for:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Because there are no parentheses or exponents in this equation, we go straight to the division.
1) 8 divided by 4 equals two so we rewrite the equation. 5+6 x 2 - 2 + 7.
2) Next in order of pemdas is multiplication. Yes I know that in pemdas multiplication does come before division but it doesn’t matter in this problem which you do first. So now we do 6 x2 =12. We then rewrite the equation 5+12-2+7.
3) lastly, addition and subtraction are grouped together and you can just do it in order of the problem. So we do 5+12=17. 17-2=15. And 15+7=22.
So the final answer is: 22
Answer:
The length of the focal width of the parabola is 1.
Step-by-step explanation:
Suppose we have a parabola with the following equation:

The centre is at point
.
The length of the focal width is of |4p|.
In this question:
We want to place in the general format. So


Comparing, we have that 4p = 1. So the length of the focal width of the parabola is 1.
Do the square root because the sides of a square are always equal and you should get 13 and 14