Answer:
70.3111111
Step-by-step explanation:
Answer:
sorry can't get your question
where are u from
First, set it up as variables
W=x
L=2x+3
apply perimeter formula and solve
2(x+2x+3)=66
2(3x+3)=66
6x+6=66
6x=60
x=10
width=10
length=23
area= 230
Answer:
Axis of symmetry:

Vertex:

Step-by-step explanation:
The given quadratic equation is

By comparing to the general quadratic function;

We have a=4,b=5,c=-1
The equation of the axis of symmetry is given by the formula;

We got this formula by completing the square on the general quadratic function.
We substitute a=4 and b=5 to obtain;


is the axis of symmetry.
To find the y-value of the vertex, we put

into the function to obtain;



The vertex of the given function is