1) (3,4), 2) (1,9), 3) (4,4)
Answer:
1. 1/2
2. 4/5
3. 9/10
4. 3/4
5. 12/25
6. 18/25
Step-by-step explanation:
First one = 9x3=27
Second one 12x9=108
3rd one = 3x4=12
Idk what that last one is
Answer:
20 ft by 60 ft
Step-by-step explanation:
"What should the dimensions of the garden be to maximize this area?"
If y is the length of the garden, parallel to the stream, and x is the width of the garden, then the amount of fencing is:
120 = 3x + y
And the area is:
A = xy
Use substitution:
A = x (120 − 3x)
A = -3x² + 120x
This is a downward facing parabola. The maximum is at the vertex, which we can find using x = -b/(2a).
x = -120 / (2 · -3)
x = 20
When x = 20, y = 60. So the garden should be 20 ft by 60 ft.
