Answer:
when adding you just line the decimals up like this, let's say you had to add 1 to 2.58.
 2.58
 + <u> 1 .00</u>
 3.58
when multiplying you might have to move it, say you had to multiply 1.5 by 2.2. (you don't have to line up the decimals like with addition)
 1 .5
 <u> </u><u>×</u><u> 2.2</u>
 30
 <u> </u><u>+</u><u> 300</u>
 3.30
1.5 has one decimal place and 2.2 also has one decimal place so you put those 2 decimal places in your answer.
sorry if this is a bit confusing lol
 
        
             
        
        
        
2.5 grams of salt and 1000mg of sodium is equal to shalf a teaspoon of salt
:)
 
        
                    
             
        
        
        
Statements that are always true are:1. Several congruent angles are formed.4. Supplementary angles are formed.Other statements are not always true when a transversal crosses parallel lines. 
        
                    
             
        
        
        
Answer:
It is B
Step-by-step explanation: