Step-by-step explanation:
k =70 because all triangles angles add up to 180° and it's an acute angle cause all the angles are lower than 90° hope this helps
 
        
             
        
        
        
You need to subtract 638 and 62 and that will give 576
        
             
        
        
        
Answer:
68.8 square inches
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
B. y=−5x+1152
Step-by-step explanation:
 
        
                    
             
        
        
        
If the angle in B is 45º, that means the angle in A is also going to be 45º, considering it's a right triangle, so AC and BC are they have the same length.
Then using Pythagoras, you'll get that 

 equals 

 . 
Now, you know that AC=BC and that AB=24.
So you'll get 

 . You do the square root in both sides and you get that 2AC=24 and AC=12. 
Now that you know that both AC and BC equal 12, you can find the area by just multiplying them and then diving them by 2. (The formula for the area of a triangle is half base multiplied by height, and in a right triangle, if a cathetus is the base, the other cathetus<span> will be the height)
And so the area is equal to 72.</span>