Answer: 15 feet
Step-by-step explanation:
Hi, since the situation forms a right triangle (see attachment) we have to apply the next trigonometric function.  
Tan α = opposite side / adjacent side
Where α is the angle of elevation to the sun, , the opposite side (x) is the height of the tree, and the adjacent side is the length of the shadow.
Replacing with the values given:  
Tan 31 = x /25
Tan 31 (25) =x
x = 15 feet
Feel free to ask for more if needed or if you did not understand something.  
 
        
             
        
        
        
Answer:
square root of 1
Step-by-step explanation:
Try it. 
 
        
             
        
        
        
Answer:
The correct answer is 90
Step-by-step explanation:
17 + 36= z- 37   ADD 17 AND 36
 53= z-37        BRING 37 OVER TO 53 AND ADD
z = 90           FINAL ANSWER
 
        
             
        
        
        
It should be 3.75 think of it as a dollar 3/4 of a dollar is .75