A polar bear starts at the North pole. It travels 1km South, then 1km East, then 1km North to return to its starting point. This trip takes 0.5h. What was the bear's average velocity (in km/h)?

Total distance travelled = 1 + 1 + 1

= 3 km

Total time taken = 45 min

=  hours

=  hours

Average speed =  

= 3 ÷  

= 3 x  

= 4 km/hr

So, the bears average speed was 4 km/hr

0

Step-by-step explanation:

The polar bear's net distance traveled is 0 km since it ends up at the same point it started.

velocity = 0 km / 0.5 h = 0

0

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages

1 mph

step-by-step explanation:

if the question is asking how much does she drive per mile then,

13 / 13 = 1 mph