Answer:
12.5 s
Step-by-step explanation:
If acceleration is constant, speed is proportional to time. To increase the speed by 50 km/h, the car will need an additional time given by ...
t/(50 km/h) = (20 s)/(80 km/h)
t = (20 s)(50/80) . . . . . multiply by 50 km/h
t = 12.5 s
It will take 12.5 more seconds for it to reach a speed of 130 km/h.
Answer:
The perimeter is 99
Step-by-step explanation:
you do 11x9=99
Answer:
x=65
Step-by-step explanation:
x-5=60
Add 5 to both sides
x=65
Since it's 10 to the 2nd power, you just move the decimal places 2 places to the right.
So the answer is 3460
