Answer:
Part 1) The graphs open downward
Part 2) The vertex is the point (-2,5)
Part 3) The axis of symmetry is x=-2
Step-by-step explanation:
step 1
we have

This is a vertical parabola open downward (because the leading coefficient is negative)
The vertex is a maximum
step 2
The quadratic equation is written in vertex form

where
(h,k) is the vertex
so
In this problem
The vertex is the point (-2,5)
step 3
The equation of the axis of symmetry of a vertical parabola is equal to the x-coordinate of the vertex
The x-coordinate of the vertex is -2
therefore
The axis of symmetry is x=-2
Answer:

Step-by-step explanation:
Probability of first yellow ball
Since first ball is again placed in the bag
Probability of second yellow ball
These two are independent events so the probability of both yellow balls=
Answer:
A
Step-by-step explanation:
If you divide 180 by 60 you can see that they send 3 texts a minute after you divide 45 by three and see that they have 15 minutes left the Number line diagram shows the amount of time and texts she can send.
I have concluded the answer is x=6.8
Answer:
−c=d−r−a
Step-by-step explanation:
if we move a value to the other side of the equal sign, the value switches positive and negative signs, in this case A moved to the right, which caused it to turn negative.