Which best explains how the invention of corporations contributed to the economy in the 1800s?
o
corporations allowed investors to invest without putting their personal property at risk, fueling the growth of new
businesses.
o corporations enabled factories to hire large numbers of unskilled workers who worked long hours for low wages.
o corporations changed how goods were made, bringing in innovations such as mass production.
o corporations suppressed the development of an industrial economy in the souther states.

step-by-step explanation:

other answer is correct. i had used the radius of the radius somehow. a website:

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.

the answer is b