Answer:
14
Step-by-step explanation:
First, find the percentage of the other types of music.
Since 30 + 50 = 80, the other 20% will be other music.
To find 20% of 70, multiply 70 by 0.2:
70(0.2)
= 14
So, there are 14 CDs that are other types of music.
2×5×7+2×5×2+2×7×2
70+20+28
108cm^2
69
as , 77+x = 146(external angle) , so x = 146 - 77
so x = 69
