The correct answer is Choice B. The mean is about 31.
To find the mean we have to add up all the different wait times and then divide by the total.
Add them up:
62(20) + 87(35) + 21(50) = 5335
Divide it by the total:
5335 / (62 + 87 + 21) = 31.38
Answer:
Jay has the fastest time because the he gained more meters per second.
Answer:
<em>x = 10; y = 20</em>
Step-by-step explanation:
8x + y = 100 (alternate exterior angles are congruent)
4x + y = 60 (corresponding angles are congruent)
Subtract the second equation from the first equation.
4x = 40
x = 10
Substitute x = 10 in first equation and solve for y.
8(10) + y = 100
y = 20
