Jim is walking around a rectangular courtyard. He starts in one corner and walks up 50 feet to the next corner to meet Jeff. Then they walk 70 feet to the next corner to get Sarah. Then all three walk diagonally through the courtyard to go back to the corner where Jim
started. What is the distance of the diagonal? (Round to the nearest whole number).

where are the choices?

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.

f(x)=4

step-by-step explanation: