Help me with this please

Convert 2 + 3/8 to an improper fraction:

2 + 3/8 = 16/8 + 3/8 = (16 + 3)/8 = 19/8

Then

5 / (2 + 3/8) = 5 / (19/8) = 5 • (8/19) = 40/19

If you want to convert this to a mixed fraction, then

40/19 = (38 + 2)/19 = 38/19 + 2/19 = 2 + 2/19

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.

answer: 8

step-by-step explanation: