Just took the quiz. The answer is (-1, -3) (1, -3)
Answer:
a
Step-by-step explanation:
its right
Answer:

Step-by-step explanation:
we know that
The measure of central angle ABC is
radians
so

subtends the complete circle
The area of the shaded sector is the area of a quarter circle
so
The area of a quarter circle is equal to

we have

substitute

Answer: 71
Step-by-step explanation:
Warmest - coldest
= -12 - (-83)
= -12 + 83
= 71