Ineed this really fast i’ll give whoever answers quick 50points or brainlist pl hurry i’m takin a test
the measure of angle b is 839, and the measure of angle c is 420,
b
what is the measure of angle d in degrees?

the angel is below

Step-by-step explanation:

the angle for d is 629

i need more info. are you looked to see there mph? how much they deliver? how far they go?

step-by-step explanation:

- "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."