<em>Answer:</em>
<em>1. 65 coins</em>
<em>2. 79 - (23 + 22 + 20) = n</em>
<em>Step-by-step explanation:</em>
<em>You can use the expression 23 + 22 + 20 to get the amount of coins that are not nickles. And for two? Try it yourself.</em>
<em>Hope this helps. Have a nice day.</em>
 
        
             
        
        
        
Answer:
4:!
Step-by-step explanation:
4:1 because their are 4 boys for every 1 girl
 
        
                    
             
        
        
        
Choosing a color, number, or restaurant
        
             
        
        
        
Answer:
As you noted, ∠PRS=80°. Take the triangle △TRS: we know two angles out of three, so that ∠TSR=45°. Now take the isosceles triangle △PTS: the two angles adjacent to the base PT are equal to 35°, so the third angle ∠PST=110° and then ∠PSR=65°. This is one of the two angles adjacent to the base of an isosceles trapezoid: knowing it, you can easily complete the solution.
 
        
                    
             
        
        
        
Answer:
(X+10)(X-3)
Step-by-step explanation: