Answer:
672
Step-by-step explanation:
anything lower then 5 or in this case 50 would round down so 649 rounds to 600 anything higher would round up 672 to 709 763 to 800 and 751 to 800
3,141......
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Number 1 is proportional because if u simplify 2/24 u get 1/12
number 2 is the book palace because it goes right through the orgin , it is proportional
The area of rectangle with length l and width w is
If the length of rectangle is expressed as 
and the width of rectangle is expressed as 
, then the area of rectangle is
Sodium oxide is a simple strongly basic oxide. It is basic because it contains the oxide ion, O2-, which is a very strong base with a high tendency to combine with hydrogen ions. Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution
