Angle 4 would be 77degrees because angle two is vertical to angle four.
Angle 3 and Angle 1 are equal because they are vertical to each other.
You would subtract 180 (degrees) minus 77 (degrees) and get 103 (degrees).
So Angle 3 and Angle 1 would both be 103 degrees.
You would get 180 degrees from the line.
 
        
        
        
3 + 5(c + 3) = -17
First, subtract 3 from both sides. / Your problem should look like: 
 Second,
Second, simplify -17 - 3 to get -20. / Your problem should look like: 
 Third,
Third, divide both sides by 5. / Your problem should look like: 
 Fourth,
Fourth, simplify 

 to 4. / Your problem should look like: 
 Fifth,
Fifth, subtract 3 from both sides. / Your problem should look like: 
 Sixth,
Sixth, simplify -4 - 3 to get -7. / Your problem should look like: 

Answer: 
c = -7
 
        
        
        
Answer: 1728 
Step-by-step explanation: You multiply 12 times 12 because we have to find how many items are in a 12 dozen first which is 144 because there are 12 items in one dozen.  We already know that there are 144 items in 12 dozens and there are 12 dozens in a gross, which is 144 items in total. Now we have to multiply 144 times 12 to find how many items are in a great gross. 144 times 12 is 1728. 
 
        
             
        
        
        
Answer:
sec A = 5/4
Step-by-step explanation:
Sec of an angle is hypotenuse/adjacent side
In your problem, sec A = 25/20 = 5/4 
It helps if you can draw a figure of the problem.  Make sure you memorize the definition of each trig function
 
        
             
        
        
        
To find the total area of this figure, it would be easiest to find the area of the left part (rectangle) and then find the area of the right part (triangle), and then add the two area values together. 
First, we will find the area of the rectangle, using the formula A = lw, where l is the length of the rectangle and w is the width of the rectangle. 
The length of the rectangle is 13 cm and the width is 9 cm. If we substitute in these values into our equation, we get:
A = (13cm)(9cm)
A= 117 cm^2 
Next, let’s find the area of the triangle, using the formula A=(1/2)bh, where b is the base of the triangle and h is the height. 
The base of the triangle is 11 cm and the height of the triangle is 5 cm (found by subtracting 13-8 as seen in the figure). If we substitute in these values and simplify, we get:
A=1/2(11cm)(5cm)
A=1/2(55cm^2)
A=27.5 cm^2. 
When we add together the area of the rectangle with the area of the triangle, we will get the total area of the figure. 
117 cm^2 + 27.5 cm^2 = 144.5 cm^2
Your answer is 144.5 cm^2 or the first option. 
Hope this helps!