If you begin with the basic equation of a vertical parabola: y-k=a(x-h)^2, where (h,k) is the vertex, then that equation, when the vertex is (-3,-2), is
y + 2 = a (x + 3)^2. If we solve this for y, we get
y = a(x+3)^2 - 2. Thus, eliminate answers A and D. That leaves B, since B correctly shows (x+3)^2.
Answer: x=12
Step-by-step explanation:
You start with: 
The segment PQ is half of PR, so to make both sides equal the PQ side must be doubled.
Then all x-values should be put on one side of the equation.
Combine like terms.
Then simplify.
No.
Because the angles would equal 170. Every triangle MUST have the interior angles of 180 degrees.
y = 1.4x - 4.8
the equation of a line in ' slope - intercept form ' is
y = mx + c ( m is the slope and c the y- intercept )
the partial equation is y = 1.4x + c
to find c, substitute (2, - 2) into the partial equation
- 2 = 2.8 + c ⇒ c = - 2 - 2.8 = - 4.8
y = 1.4x - 4.8 is the equation in slope- intercept form
25:63=25/63=0.39682539682=0.40=40%
Hoped I helped!
