40% of 20 is 8 Boys
60% of 20 is 12 Girls
50% of the Girls is 6
25% of the Boys is 2
6 + 2 = 8 Students wore glasses
Hope this helps!
Answer:
I think it is 123 for number 9 i can't see, the other problems
Step-by-step explanation:
Answer:
(4,3) is the answer
Step-by-step explanation:
F(x) = (x-4)(x-3)
if you put x=4, it makes f(x) 0. if you put x=3 it makes f(x) 0