Answer:
24hours divided by 2 is 12
Step-by-step explanation:
Answer:
2z + 12y - 32
Step-by-step explanation:
1) 2z cannot be combined with any other number because no other number has the variable z.
2) 4y and 8y are both positive and van be combined. Therefore, it is 12y.
3) -32 cannot be combined with any other number because it doesn't have a variable that is the same as the others.
Therefore, the answer is 2z + 12y - 32
Answer:
9/15
Step-by-step explanation:
Answer:
The average speed is 7.5
Step-by-step explanation:
Speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it.
Then, the average speed relates the change in position to the time taken to effect that change:
The change in position is the difference between the final position and the initial position, while the change in time is the difference between the final and initial time.
In this case, the starting and ending positions are calculated by replacing the times in the function of the distance d (t):
d(5)= 0.5*5²= 12.5 m
d(10)= 0.5*10²= 50 m
So:
- change in position= final position - initial position= 50 m - 12.5 m= 37.5 m
- change in time= 10 s - 5 s= 5 s
Replacing in the definition of speed:
and solving you get:
speed= 7.5
<u><em>The average speed is 7.5 </em></u><u><em></em></u>