Answer:
Look at explanation i wasn't too good at this but i could get this far otherwise i didn't know what to do!
Step-by-step explanation:
6 x 2x = 12x 6 x y= 6y
12x+6y + 2x+4y
12x+2x= 14x
4y+6y= 10y
14x+10y
A guess would be d and gauss would not have been consulted because a mean is not necessary in this instance
20/25*2(5-10)=20/25*10-20 later calculate the numbers
Use the law of cosines:
c² = 8² + 11² - 2•8•11 cos(37°)
c² ≈ 44.4402
c ≈ 6.66634