Answer:
The slope is -1
Step-by-step explanation:
The slope is always the number in front of the x.
Volume of cube = 1/3 * pi * r^2 * h
83.74 = 1/3 x 3.14 x r^2 x 5 = 5.233r^2
r^2 = 83.74/5.233 = 16
r = sqrt(16) = 4
Answer: d = 2(4) = 8 inches.
It's a straight line at -5
Answer:
752.8 miles
Step-by-step explanation:
First we need to calculate the time it takes for them to meet
we add the speeds multiplied by the time (substracting the 4 hours difference for the second train) and it would equal the total distance
80 mi/h× T + 68 mi/h× ( T-4h) = 1121 mi
80 mi/h × T + 68 mi/h× T - 68 mi/h × 4 mi = 1121 mi
148 mi/h T = 1121 mi + 272 mi
T = 1393 mi / 148 mi / h = 9.41 h
then we just multiply the speed of the first train times the number of hours and it gives us the distance it traveled
9.41 h * 80 mi / h = 752.8 mi