Answer:
Step-by-step explanation:the first one is 8
Second 3 3- 6
Total distance = 200 miles
Time needed for the first 100 miles
= 100 ÷ 40 = 2.5 hours
Time needed for the second 100 miles
= 100 ÷ 50 = 2 hours
Total time = 2.5 + 2 = 4.5 hours
Average speed = 200 ÷ 4.5 hours = 44.4 miles per hour
Hello there.
To answer this question, we need to remember some properties about the vertex of quadratic functions.
Let
. Its vertex can be found on the coordinates
such that
and
, in which
.
Using the coefficients given by the question, we get that:

Thus, we have:

So the statement is true, because the
coordinate of the vertex of the function is equal to 
Answer:
Quadrant I (one). 73 degrees
Step-by-step explanation:
See the attached image.
To get a coterminal angle, add 360 degrees. 360 + (-287) = 73.