Using the student id given above, a = 19 and b = 7
Average speed for the first 54 km = 48+a km/h
Plug a = 19
Average speed for the first 54 km = 48+19 = 67 km/h
Average speed for remaining 86 km = 43-b km/h where b = 7
Average speed = 36 km/h
Average speed of entire journey = total distance / total time taken
Time taken to cover 54 km = hr
Time take to cover 86 km = hr
Total time taken = 3.2 hours.
Total distance = 86+54= 140 km
Average speed of the entire trip = = 43.75 km/ h
<span>Simplify <span>18*<span>x/3</span></span> to <span>6x</span>
</span><span><span>6<span>x^8</span>+21<span>x^2</span>−6x</span></span>
Answer:
83
Step-by-step explanation:
Answer:
6.4
Step-by-step explanation:
does this make sense to you? Do you have any questions about raising numbers to a negative value?