The angles will add up to 180 degrees.
        
             
        
        
        
Answer:
14
Step-by-step explanation:
right angle is equal to 90 so you just minus 76 from 90
 
        
             
        
        
        
Answer: A. ![\left[\begin{array}{ccc}29&13\\13&10\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D29%2613%5C%5C13%2610%5C%5C%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
The question is asking us to find the product of the matrices. The key difference is the second A has a little <em>T</em> in the exponent. This <em>T</em> means transpose. You multiply A by the transpose of A. To find the transpose, you turn the rows into columns.
![A^T=\left[\begin{array}{ccc}5&3\\2&-1\\\end{array}\right]](https://tex.z-dn.net/?f=A%5ET%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%263%5C%5C2%26-1%5C%5C%5Cend%7Barray%7D%5Cright%5D)
Now that we have our transpose, we can multiply the matrices.
![\left[\begin{array}{ccc}5&2\\3&-1\\\end{array}\right] \left[\begin{array}{ccc}5&3\\2&-1\\\end{array}\right] =\left[\begin{array}{ccc}5*5+2*2&5*3+2(-1)\\3*5+2(-1)&3*3+(-1)(-1)\\\end{array}\right] =\left[\begin{array}{ccc}29&13\\13&10\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%262%5C%5C3%26-1%5C%5C%5Cend%7Barray%7D%5Cright%5D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%263%5C%5C2%26-1%5C%5C%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%2A5%2B2%2A2%265%2A3%2B2%28-1%29%5C%5C3%2A5%2B2%28-1%29%263%2A3%2B%28-1%29%28-1%29%5C%5C%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D29%2613%5C%5C13%2610%5C%5C%5Cend%7Barray%7D%5Cright%5D)
 
        
             
        
        
        
Answer: 
14
Step-by-step explanation:
To get the answer, add the whole numbers together and then add the fractions together: 
9 + 4 = 13 
(You can even stop here because 14 is the closest to 13) 
Now, add the fractions: 

To add fractions you have to have a common denominator. To find the common denominator multiply 3 by 5, and 5 by 3. Like this: 

Simplify: 
 Distribute everything from above
              Distribute everything from above
 Add
                      Add
So, the whole fraction will look like this  . This is closest to 14.
. This is closest to 14. 
Hope this helps!! Ask questions if you need!
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
y - y1 = m(x - x1)
ur points are gonna be x1 and y1
y - 3 = 3(x + 1)
so ur y point is gonna be -3
but ur x point is gonna be -1.......because 3(x + 1) is the same as 3(x - (-1)
ur point is (-3,-1)