Suma a trei numere este 995. Primul numar adunat cu dublul celui de al doilea si cu triplul celui de al treilea ne da 1916
Se mai stie ca 1/3 din al treilea este cu 76 mai putin decat 1/3 din al doilea. Care sunt cele trei
numere?

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

- "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."