Answer:
Step-by-step explanation:
x²+10-21=y
x²-11=y
x²=11+y
if you put value y =-11 than it can be resolve
x²=11-11
x²=0
x=0
30%
1L = 1000ml
--------------------
100%-> 1000
1%-> 10
300 ÷ 10 = 30%
First Group like terms:
Add similar elements:
The life expectancy of a circulating coin is 25 years. The life expectancy of a circulating dollar bill is only 1/20 as long.
