The average speed of Jen for the entire journey is 30 mph.
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Average speed</h3>
The average speed of a journey is the ratio of total distance to total time of motion.
Total time of motion = 3 + 9 = 12 hours
Total distance = 2[3(60)] = 2(180 miles) = 360 miles
Average speed = 360 /12
Average speed = 30 miles per hour
Thus, the average speed of Jen for the entire journey is 30 mph.
Learn more about average speed here: brainly.com/question/6504879
Answer:x-1 / 5 - 13x
Step-by-step explanation:X-1 / 7x2 - 3x - 9
x-1 / 14 - 13x - 9
The quadratic equation is:
17x^2- 12x= 0
Step-by-step explanation:
y=7x-16 we substitute in y=x^2-10x+14
7x-16=x^2-10x+14
x^2-10x-7x=-30
×^2-17x+30=0
x=2
×=15