Remember:
a) (x,y) => (x, -y) is a reflection across X axis
b) (x,y) => (-x,y) is a reflection across Y axis
Here △RST is mapped to △R′S′T′ using the rule (x,y)→(x,−y)
Hence it is a reflection across X axis.
The size of the triangle does not alter.
But when this is followed by (x,y)→(3x,3y), the lengths increase by a factor 3.
Hence the triangles do not remain congruent.
△RST is not congruent to △R′S′T′ because the rules do not represent a sequence of rigid motions.
Option A) is the right answer
Answer: He earned 43,344 a year and earned and earned 3612 a month
so this has to shapes, a semicircle and a parallelogram. Area of parallelogram is 8×5=40. Area of a circle is pi×3 squared which is 28.27. Then you have to divide that by two because its half a circle which. is 14.14. So then you add 40+14.14=54.14. So your answer is 54.14
Answer:
P=(a+b)*2
P=(2x+8+5x-2)*2=(7x+6)*2=14x+12