It is given that the mountain climber's change in elevation over an 8-hour period is −248 feet. Therefore, to find the average change in elevation per hour for that time period all that we need to do is divide the total change in elevation by the the time taken.
Therefore, average change= feet
Therefore, the first option is the correct option.
Let's treat that one as a 4 by 8 rectangle with a 2 by 4 right triangle chopped out of the corner.
A = 4×8 - (1/2)×2×4 = 32 - 4 = 28
Answer: 28
Answer:
56
Step-by-step explanation: You have to substitute 6 for a because it says, "Which expression is equivalent to 7(a+2) when a=6"
7(a + 2)
7(6 + 2)
42 + 14
= 56
Answer:
4/15
Step-by-step explanation:
3/5x4/9=
12/45=
4/15