Answer:

Step-by-step explanation:

Solve the brackets first.

Division comes next.

Cancel the negative signs.

Multiply the terms.


Answer:
Step-by-step explanation:
Step-by-step explanation:
#12
PQ = 6x + 25
QR = 16 - 3x
PR = 6x + 25 + 16 - 3x
PR = 3x + 41
#1
D = √(-4 - 5)² + (-7 - 2)²
D = √(-9)² + (-9)²
D = √81 + 81
D = √162
D = 9√2
I am going to assume 2.5x is really 25x (typo).
First formulate the equality

Now two results emerge.
.
Hope this helps.
Answer:
The function is equal to 
Step-by-step explanation:
we know that
The equation of a vertical parabola in vertex form is equal to

where
a is a coefficient
(h,k) is the vertex
In this problem we have
(h,k)=(8,-1)
substitute

<u><em>Find the value of a</em></u>
Remember that we have the y-intercept
The y-intercept is the point (0,-17)
substitute
x=0,y=-17






therefore
The function is equal to

see the attached figure to better understand the problem