Answer:

Step-by-step explanation:
you can use the pythagorean theorem. form a triangle, the distance on one side should be 6, the other 1. 
Answer:
Ellie is correct because 1,483 and 1,454 would round up to 1,500 but the 1,250 would round up to 1,300
Step-by-step explanation:
Answer:
1/8
Step-by-step explanation:
if there is 4 children it gives the possibility for 2 genders 2x4 = 8 quick math
We can treat each distance distance traveled by the four wheelers are vectors. Their sum must be zero since the last four wheeler truck ends up where the first four wheeler truck started
d1∠1 + d2∠2 + d3∠3 + d4∠4 + d5∠5 = 0
d5∠5 = - (d1∠1 + d2∠2 + d3∠3 + d4∠4)
Since we don't know the speed of the fifth wheeler, we just add the angles and equate it to 360
20 + 30 + 0 + -40 + ∠5 = 360
∠5 = 350 or -10
The fifth wheeler must travel at an angle of -10 degrees.