Acity has an elevation of 465 feet. another city has an elevation of -45 feet. which expression can be used to find the difference in their elevations? a. (-465 - (-45)) + 45) c. (465 - 45) d.(465- (-45)) will get brainest if answerd

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."