Answer:
x = 19
Step-by-step explanation:
To find the value of x, you set the equations as equal to each other:

Then you simplify:

Answer:
{x | x ∈ R, 4,-1}
Step-by-step explanation:



Distributive property
Distributive Property

set y to 0

set the factors to 0


Answer:
The equation of the parabola is
, whose real vertex is
, not
.
Step-by-step explanation:
A parabola is a second order polynomial. By Fundamental Theorem of Algebra we know that a second order polynomial can be formed when three distinct points are known. From statement we have the following information:
,
, 
From definition of second order polynomial and the three points described above, we have the following system of linear equations:
(1)
(2)
(3)
The solution of this system is:
,
,
. Hence, the equation of the parabola is
. Lastly, we must check if
belongs to the function. If we know that
, then the value of
is:


does not belong to the function, the real point is
.
Answer:
there is none.
Step-by-step explanation:
19.4, the lowest is tenths, you need another digit down for hundredths.
hope I helped!
Answer:
Step-by-step explanation:
TRIANGLE