My friend joop got 14 totts and elentines for about $72. Totts for $8 each and some elentines for $3 each.
Write a system of equations to model the relationship between Joop's totts (x) and elentines (y).

Step-by-step explanation:

The variables are defined, so we only need to express the given relations. The total of the two quantities is 14.

  x + y = 14

The sum of costs is $72. Totts are $8 each, so x of them will cost 8x. Elentines are $3 each, so y of them will cost 3y.

  8x +3y = 72

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