Answer:
(a) S=
(B) S(average speed)=65.04
Step-by-step explanation:
Given
D=S*T
So, S=
and
T=11.5 Hr
D=748 Km.
S(average speed)=
=65.04 kmph
It has infinite lines of symmentry
If i understood your question right you are asking if a clown needs 275 balloons but there is only 2 balloons per pack. you would need 137.5 packs but you'd probably round up to 138.
Hope that helps
ANSWER

EXPLANATION
The given function is

Let us split the middle term to get,

We factor to obtain,


Let us find the zeros of f(x),

Either


We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.
This gives us,

Hence the axis of symmetry of the parabola has equation,

Since the given function has minimum turning point, it will decrease and then increase.
The function will be increasing for

The function will be increasing and positive for
So we can set x= width
2x+2 = length
so 2(x)+2(2x+2)= 76
so that will give us 2x+4x+4=76
6x=72
x=12
so 12 is width and 26 is length