Hello i have a question that i do not really understand if you could make a good explanation on how you got ur answer i would appreciate it and i can make u branliezt. So the question is 5x 10 1 x20. (On the 10 there is a 1 but it is a really small 1 that comes after the 10. I did not really understand this one so please help me)

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

step-by-step explanation:

; fx

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.