They decide to save money going to Kelowna and can leave tonight by bus. They need to get back to the high school for a sporting event so will take the express train where they can save three hours of travel time because the express train travels 25 km/h faster than the bus. If the distance between South Central High and Kelowna is 1500 km, determine how long it will take to travel in total if they travel by bus going to the conference and then by express train coming back from the conference, rounded to the nearest hour. a-12 hours
b-27 hours
c-15 hours
d-30 hours

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.