Answer:
a=3
Step-by-step explanation:
x – 2y = 4
ax– 6y = 12
To have infinitely many solutions, the two equations have to be equal
Multiply the first equation by 3
3x -6y = 12
ax -6y = 12
a = 3
 
        
             
        
        
        
<span>DE = EB
DE = p + 15
I would help you farther but I don't know what p equals. If you know then add that number with 15 and you have your answer.</span><span />
        
                    
             
        
        
        
The correct answer is 300
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
A good trick for trigonometric functions is to remember SOHCAHTOA:
Sin=<u>O</u>pposite over <u>H</u>ypotenuse
Cos=<u>A</u>djacent over <u>H</u>ypotenuse
Tan=<u>O</u>pposite over <u>A</u>djacent
The red arrows on the attachment indicate where opposite, hypotenuse, and adjacent are for angle A.
So in this case, the sin of angle A (opposite over hypotenuse) would be  and cos A (adjacent over hypotenuse) would be
 and cos A (adjacent over hypotenuse) would be  .
. 
I hope this helps!
 
        
             
        
        
        
SOLUTION
Consider the property, opposite angle of a cyclic quadrilateral are supplementary
hence 

Recall that 

Hnece, we have that 

Then 

Hence 
x=17
Since 

Therefore 
The measure of angle NOP is 68⁰
Answer;  68⁰ (The fourth Option )