Answer:
9. (-1,3)
11. (4,1)
Step-by-step explanation:
Hope it helped
Recall your d = rt, distance = rate * time.
let's say the Eastbound train is going at a rate of "r" mph, since we know the Westbound train is going faster 12 miles more than that, then the Westbound train must be going "r+12".
we also know that after 4 hours, both of them were 760 miles apart, so
If I understand your sequence, then this is the "closed form" of the sequence:
a_n = 63 - 4 n
Sum = (59, 55, 51, 47, 43, 39, 35, 31, 27, 23, 19, 15, 11, 7, 3) = 465
Answer:
5x^2(2-3x)
(n+4)(x+y)
Step-by-step explanation:
Answer:
Multiply the number of inches on the map times the scale to determine the true distance. For example, if the distance on the map was 5.5 inches and the scale was 1:6,336,000, the true distance would be 550 miles. To convert an area, convert the dimensions using the scale and then find the true area.