Answer:
13 x 9 x 5 
Step-by-step explanation:
because there is 13 steps in one flight and there fore we need to multiply 13 x 9 
then we have to multiply the product by 5 because it is asked how many steps does she climb in five days
 
        
             
        
        
        
Answer:
x=3
Step-by-step explanation:
please mark me as brainliest
 
        
                    
             
        
        
        
Answer:
36.67 [mile/hour].
Step-by-step explanation:
1) use the formula: V=S/t, where S - entire jorney, v - average speed (required to calculate), t - elapsed entire time.
2) according to the formula above S=50+60=110 miles; t= 50/40 + 1.75=1.25+1.75=3 hours.
3) after the substitutuion  110 and 3 into the formula above:
v=110/3≈36.67 miles/h.