Suppose a playlist on a music player consists of 80 songs, of which 8 are by your favorite artist. Songs are played by selecting a song at random (with replacement) from the playlist. Let the random variable X represent the number of songs played until a song by your favorite artist is played. What is the expected number of songs that will be played before a song from your favorite artist is played

the square root of what number? if you add that, then someone will probably answer the question.

i think it would be 42cm

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.