Answer:

Step-by-step explanation:

Distribute.

Add 5x and subtract 15 on both sides.


Multiply -1 on both sides.

 
        
             
        
        
        
Answer:
The Magazines each costed $8.30 and the books cost $13.80 for the amount of $41.50. and the 2 magazines and 5 books for $42.25 the 2 magazines is $21.12 for each and $8.45 for each book.
Step-by-step explanation:I got the answers by taking the total cost and taking the number of books or if it was a a magazine and I would divide it by lets just say you have 42.25 dollars you would divide that by 3 and you would do it for every item with the total cost.
 
        
             
        
        
        
Answer:-8, -6,-3, 4 is the correct answer
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The triangle is a right triangle 
Step-by-step explanation:
For the triangle to be right, Pythagoras’ theorem must be obeyed 
According to the theorem, the square of the longest side (the hypotenuse) equals the sum of the squares of the two other sides 
Now, from the given side lengths, the highest value is 10;
squaring this, we have 10^2 = 100
Squaring and adding the other values, we have
6^2 + 8^2 = 36 + 64 = 100
This mean the values are equal and the Pythagoras’ theorem is obeyed 
Hence, we can conclude that the triangle with the given side lengths is a right triangle 
 
        
             
        
        
        
Answer:
the answer is 5 because if you divide it its your answer