Answer:
Diameter
Step-by-step explanation:
Variable r stands for radius.
The radius is half of the length within the circle from the two farthest points.
Multiplying this radius will get you the diameter, which is the full length (instead of half) within the circle from the two farthest points.
ANSWER
The vertex of the graph of

is

EXPLANATION
The vertex form of a parabola is given by

where

is the vertex of the parabola.
The function given to us is

This is already in the vertex form.
When we compare this to the general vertex form, we have,


and

Therefore the vertex of the parabola is

Hence the correct answer is option A.
This is what I got as the answer, 2b x (12-17a)
Answer:
352
Step-by-step explanation:
So first you need to subtract 668 from both sides.
c/22 + 668 = 684
-668 -668
---------------------------
c/22 = 16
Then multiply both sides by 22.
c/22 * 22 = 16*22
c = 352
Check-
352/22=16
16+668=684
Answer:
z = 69
Step-by-step explanation:
43 - 20 = z/ 3
23 = 
cross multiply
z = 23 x 3
z =69