4) 28% = 28/100 = 7/25
5) 63% = 63/100
7) 75% = 75/100 = 3/4
8) 30% = 30/100 = 3/10
10) 5% = 5/100 = 1/20
11) 90% = 90/100 = 9/10
Answer:
6
Step-by-step explanation:
6 divided by 4 = 1 + 2 leftover
6 divided by 5 = 1 + 1 leftover
A=1/2(r+2)
2A=f(r+2)
2A/f=r+2
2A/f-2=r
Answer: x=y-3 or y=3+x
