P and Q are congruent because they are the same difference away from the line that separates them, the bisector KL. They mirror each other.
the answer is c and I think it's 300
19 and 42 are coprime, so we can use the CRT right away. Start with
Taken mod 42, we're left with a remainder of 19. Notice that
so we need to multiply the first term by 3 to get the remainder we want.
Next, taken mod 19, we're left with a remainder of 4. Notice that
so we need to multiply the second term by 6.
Then by the CRT, we have
so that any solution of the form is a solution to this system.
Answer:
There's no dot plot.
Step-by-step explanation:
I'll answer it if you can give me a picture though...