I need this question done thanks

H. 40%

Step-by-step explanation:

18/30 = 60%

So 60% of kids have last names with more than 8 letters.

That means 40% of kids have last names with fewer than 8 letters.

(Because the percentages have to add up to 100)

Hope this helps! :)

sorry not knowing about that

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q