-Solve the system of equations using substitution: a.) y=-x-6 y=x-4 b.) y=3x-2 x-y=4 c.) 2y=2x+12 y=-2x-3

answer: add the !

step-by-step explanation: then we will answer

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

the monthly balance will be $75,000

i believe the answer is the polygon, heptagon.