Answer:
Step-by-step explanation:
When does the value of f(x) = (1/2)x equal the value of g(x) =2x+8?
Multiplying through by 8 we get
2x + 8 = 3x
8 = 3x - 2x
x = 8 (answer)
we are given
where
price p( in dollars) of a new smartphone
t is the number of months since January
now, we can solve for t
step-1:
Add both sides by 4t^2
step-2:
Subtract both sides by p
step-3:
divide both sides by 4
step-4:
Take sqrt both sides
so, we get
..............Answer
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>