Answer:
Always
Step-by-step explanation:
 if two points lie in a plane, then the entire line containing those points lies in that plane
 
        
             
        
        
        
Answer:  The cost of one sandwich is $4.25 and the cost of one cup of coffee is $2.25.
Step-by-step explanation:
Let x be the cost of one sandwich and y be the cost of one cup of coffee.
By considering the given situation, we have the following equations :-

Multiply 2 on both sides of equation (2) , we get

Subtract equation (1) from equation (3), we get

Put value of y in (1), we get

Hence, the cost of one sandwich is $4.25 and the cost of one cup of coffee is $2.25.
 
        
             
        
        
        
Answer:
Concept: Application of Real world problems 
- They counted 470470470 milliliters 
- You donate on average 470 ml per person
- So 470470470÷ 470= 1,001,001 people.
 
        
                    
             
        
        
        
A = {x ≥ 3}, B = {x ≤ 1}
So A∪B = {x ≥ 3 or x ≤ 1}
So for x ⊆(1,3), A∪B = ∅
Apparently, (1,3) covers the first option, a will be the answer
        
                    
             
        
        
        
13x-6+95=180
Combine like terms
13x=91
Divide by 13
X=7
Two base angles are supplementary/equal 180