Assume the unknown number is x
x * (33.1/100) = 662
so x= 2000
33.1% of 2000 equals 662
Answer:
(x,y)=(5,-1)
Step-by-step explanation:
1. 2x+y=9 ---> y=9-2x
2. Substitute y=9-2x into 3x-2y=17 ---> 3x-2(9-2x)=17 ---> 3x-18+4x=17 --> 7x=35 ---> x=5.
3. Substitute x=5 into 2x+y=9 ---> 2*5+y=9 ---> y=9-10 ---> y= -1
Answer:
(5,-8)
Step-by-step explanation:
You multiply 86 x .45 and you get the answer of 38.7