Which point is an x-intercept of the quadratic function
f(x) = (x + 6)(x - 3)? THE ANSWER IS D.
 
        
             
        
        
        
Answer:
What's '2−7x'
Step-by-step explanation:
 
        
             
        
        
        
Answer:
127
Step-by-step explanation:
400+1495=1895
1895/15=126.333333333
 
        
             
        
        
        
The number in the blank box should be 44 because it said that "3 times x and 4 times y is 44".
You need to multiply the first equation by 3:
3x + 3y = 39.
Then, subtract the first equation from the second equation:
3x - 3x = 0
4y - 3y = y
44 - 39 = 5
Your new equation should look like this: y = 5
Now, substitute y = 5 into the first original equation:
x + 5 = 13
x = 8
Ans. (x, y) = (8, 5)
 
        
             
        
        
        
So attached is a picture of the triangle you are talking about and listed under are the choices:
A.) Cos Z=b/c 
B.) Sin X=c/b 
C.) Tan X=b/a 
<span>D.) Tan Z=a/b
</span>
The answer would then be 
B. SinX = c/b.
Just remember SOH CAH TOA:
Sinθ=  Opposite         Cosθ =    Adjacent             Tanθ=   Opposite
         Hypotenuse                   Hypotenuse                        Adjacent
Using the triangle in the scenario, you just need to identify which side is which. 
Given m∠ZAdjacent = b
Opposite = a
Hypotenuse = c
SinZ=  a         CosZ = b             TanZ= a 
            c                      c                        b
Given m∠X:
Adjacent = b
Opposite = a
Hypotenuse = c
SinX= <u> b </u>        CosX =<span><u> a </u></span>            TanX=<span><u> b </u></span>
            c                      c                        a
So the answer is B. 
Attached is a picture of how I assigned the sides depending on the angle used.