Answer:
rounded to the nearest 10 is 840
rounded to the nearest 100 is 800
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
Determine the average speed
This is calculated as thus:

Convert time to hour:









Essentially, you're going to want to reverse the steps on x in order to isolate it from the rest of the variables. To do this, perform inverse operations on x. The first one of these is the multiplication of x and m, so divide both sides by m to cancel m out on the right side. Now we have y/m = x + b. The final thing to do in order to isolate x is to subtract b from both sides. This yields us y/m - b = x. This can be rearranged into x = y/m - b, which should be your answer.
Answer:
1
Step-by-step explanation:
17+(-8)+(-8)
9+(-8)
1