Question 1:This is a 45-45-90 right triangle. If the leg length is 

, then the hypotenuse length will be 

.
The leg length of this 45-45-90 right triangle is 8. Multiply that with the square root of 2. You get 

. Thus, the last choice is your answer.
Question 2:This triangle can be identified as a 30-60-90 right triangle.
Let's say the smallest leg as a length of 

.
Then, the longer leg will have a length of 

.
Also, the hypotenuse will have a length of 

This triangle follows this format, making it a 30-60-90 right triangle. Thus, the angles are 30, 60, and 90.
Hope this helps! :)
 
        
             
        
        
        
Answer:
it's B
Step-by-step explanation:
because I did this
 
        
                    
             
        
        
        
You have to move the decimal
        
             
        
        
        
Like terms are going to have the EXACT same variables....or they can just be constants with no variables.
x^2 and 3x^2 are like terms
x^2 and x^3 are not like terms
8 and 9 are like terms
8x and 9y are not like terms
so ur like terms in ur problem are : 2y^3 and y^3