<span>437 = (21 + x)(21 - x), then x = 2, -2</span>
Answer:
Step-by-step explanation:
x= -8,-11
I would try drawing the line on a coordinate plane to help.
Well you have to find out how many cd is 40% and 30%
30% = 30x.3=9
40% = 30x.4=16
now add 16 and 9
16+9=25 now subtract 25 from 30 and see that you have 5 cd of a different type of music to find that as a % divide 5 by 35 to get .14 I rounded it to the nearest hundreth now move the decimal over 2 spots to get 14%
