Let

the length and

the width. By the ratio of the sides:

Now, we'll find the perimeter p. We'll use the formula below:

The area of a rectangle is

. Then:
Answer:
f(x+5)=3x+16
Step-by-step explanation:
lets name " x+5" T
so f(T)=3T+1
now use "x+5" replace T
now its f(x+5)=3(x+5)+1=3x+15+1=3x+16
Answer:
x = -9
Step-by-step explanation:
1.4 - 0.2x = 3.2
0.2x = 3.2 - 1.4
0.2x= 1.8
x= -9
Answer:
Vertex: (1,-1)
Symmetry: x = 1
Step-by-step explanation:
y = 4x² - 8x + 3
y = 4(x² - 2x) + 3
y = 4[x² - 2(x)(1) + 1² - 1²] + 3
y = 4(x - 1)² - 1
In y = a(x - h)² + k,
(h,k) is the vertex
And a vertical line passing through the vertex is the line of symmetry, i.e x = h.
Vertex: (1,-1)
Symmetry: x = 1