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:
B
Step-by-step explanation:
when x is 0 y=4(0)+12 y=12
y is 0 y=4(-3) +12 = 12=12
Answer:
go die
Step-by-step explanation:
18 meters by 14 meters
Step-by-step explanation:
18 meters by 14 meters
Area of rectangle is base times height (AKA length times width or however you wish to call the dimensions).
This question is a system of equations question. We can make two equations. We know that every rectangle must have 2 "lengths" and 2 "widths" (4 sides in a rectangle). Since Maria only has 64 meters of fencing, we get the equation:
2L+2W = 64
Now we know the area enclosed must be 252 so we have:
L* W = 252
Rewriting the second equation we get:
Plug this into first equation to get:
(multiply everything by L)
Solving the quadratic tells us L can be 18 or 14. Let's consider if L is 18 first by plugging 18 back into the second equation to get 18 * W = 252 which gives us W = 14. If we do the same for when L = 14, we get that W = 18.
Now you might wonder why we have 2 possible combinations, that's because in reality, it doesn't matter which one we label as length (L) or width (W).
Oh gosh i wish i knew how to do that what grade are u in cause i remember having that last year but dont remember.
