15+22(4+11)=x
4+11=15
22*15=330
15+330=345
x=345
<u>ANSWER TO PART A</u>
The given triangle has vertices
The mapping for rotation through counterclockwise has the mapping
Therefore
We plot all this point and connect them with straight lines.
ANSWER TO PART B
For a reflection across the y-axis we negate the x coordinates.
The mapping is
Therefore
We plot all this point and connect them with straight lines.
See graph in attachment
I hope this is right i think the answer is 40
(2,4) cause where the lines meet
Geometry is a subject with a lot of formals and can be studied for years. What specific kind of formulas would you like?