Answer:
Step-by-step explanation:
 
        
             
        
        
        
9°, complementary angles always add up to 90°
        
             
        
        
        
First multiply (-5/6) and (1/6) to get 

then you subtract that from (8/9) to get

final answer is 
 
 
        
        
        
Answer:
Hope its help you..
Step-by-step explanation:
 
        
             
        
        
        
<h2>
Answer:</h2>

<h2>
Step-by-step explanation:</h2>
We will use the Gaussian elimination method to solve this problem. To do so, let's follow the following steps:
Step 1: Let's multiply first equation by −2. Next, add the result to the second equation. So:

Step 2: Let's multiply first equation by −1. Next, add the result to the third equation. Thus:

Step 3: Let's multiply second equation by −35, Next, add the result to the third equation. Therefore:

Step 4: solve for z, then for y, then for x:


By substituting  into the first equation, we get the
 into the first equation, we get the  . So:
. So:
