Answer:
6.7
x 2.5
2 x 6 =53
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
 Multiply the first equation by 4.
Step-by-step explanation:
4(x+y=3) which gives
4x+4y=12
and 
4x-y=7
Then subtract the two equations and the x variable will be eliminated. 
 
        
                    
             
        
        
        
Answer:
5. 100/b+24   6. 5m+13
Step-by-step explanation:
 5. The quotient means Divide. The sum means Add. So / is z symbol for division. 100 divided by b plus 24. 
6. More means to Add and the product means to multiply. So instead of putting m times 5, you would put 5m. First you would put 5m+ 13 b/c of the "than". 
 
        
             
        
        
        
Answer:
Part A) 
Part B) 
Part C) 
Step-by-step explanation:
Part A) we know that
In the right triangle ABC of the figure the sine of angle A is equal to divide the opposite side angle A by the hypotenuse
so

substitute the values

Part B) we know that
In the right triangle ABC of the figure the cosine of angle A is equal to divide the adjacent side angle A by the hypotenuse 
so

substitute the values

Part C) we know that
In the right triangle ABC of the figure the tangent of angle A is equal to divide the opposite side angle A by the adjacent side angle A
so

substitute the values

 
        
             
        
        
        
Answer:
x = 20
Step-by-step explanation:
x/10 = 2 multiply both sides of the equation by ten ↓
10x x/10 = 10 x 2 reduce the numbers with the greatest common factor 10 ↓
x = 10 x 2 multiply the numbers ↓
x = 20