D) 180 because there are 180 possible combinations for the marbles to be picked out
        
                    
             
        
        
        
Answer:
Line 1 to lin2 2= I think D or maybe A.. Mainly D
line 2 to line 3= A
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
The answer is 108. Because you multiply 3 by 9. which is 27 then you multiply 27 by 4 because thats how many 3zs there are.
 
        
             
        
        
        
Answer:
180 hamburgers 
120 hotdogs 
Step-by-step explanation:
In this question, we are asked to calculate the number of hamburgers and hotdogs sold by a company given the amount made by them and the total number of these snacks sold
We proceed as follows;
Let the amount of hotdogs sold be x and the amount of hamburgers sold be y. 
We have a total of 300 snacks sold, mathematically;
x + y = 300 ..........(I)
Now let’s look at the prices.
x number of hotdogs sold at $2, this give a total of $2x hotdogs 
y number of hamburgers sold at $3, this give a total of $3y.
Adding both to give total, we have ;
2x + 3y = 780.......(ii)
This means we have two equations to solve simultaneously. From equation 1, we can say x = 300 -y 
Now let’s insert this in the second equation; 
2(300-y) + 3y = 780
600-2y + 3y = 780
y = 780-600 = 180
Recall; x + y = 300
x = 300 -y 
x = 300-180 = 120
 
        
                    
             
        
        
        
Answer:
 3° and 87°
Step-by-step explanation:
 <em>here's</em><em> your</em><em> </em><em>solution</em>
<em> </em><em>=</em><em>></em><em> </em> we know that measure of complementary angle is 90°
 =>. one angle is.  = x
   => other angle is .= (19x + 30)
 => so, x + 19x + 30° = 90° 
 => 20x + 30° = 90°
 => 20x = 60° 
 => x = 60/20
 => x = 3°
 hence one angle is 3° and other is 87°
   hope it helps