1st: 2x-3 2nd: 2x-1 3rd: 2x+1 4th: 2x+3
adding the above you get 8x=184
<span>-5(3t-5)+7t=8t-6
-15t + 25 + 7t = 8t - 6
-15t + 7t - 8t = -6 - 25
-16t = -31
16t = 31
t = 31/16 = 1.9375</span>
Average speed = (total distance) / (total time)
Average speed = (192 km) / (8 hours) = 24 km per hour .
Answer:
Because it only has one answer and there are no variety of answers.
hope this helps
Step-by-step explanation:
3x - 4(4) = 65
3x - 16 = 65
3x = 81
x = 27
