Answer:
6
Step-by-step explanation:
20 x 0.3 = 6
Answer:
Step-by-step explanation:
The the area of the rectangular pen be A = LW
L is the length
W is the width
Given
A = 3136ft²
3136 = LW..........1
Given the perimeter P = 2L+2W....... 2
From 1; L = 3136/W
Substitute into 2
P = 2(3136/W)+2W
P = 6272/W + 2W
In order to minimize the amount of material needed, then dP/dW = 0
dP/dW = -6272/W² + 2
0 = -6272/W² + 2
6272/W² = 2
cross multiply
6272 = 2W²
W² = 3136
W = √3136
W = 56ft
Since A = LW
3136 = 56L
L = 3136/56
L = 56ft
Hence the dimensions of the rectangular pen that minimize the amount of material needed is 56ft by 56ft
Step-by-step explanation:
5 - 3x - 2 = x + 2(x + 1)
Group like terms at the LHS and open the brackets at the RHS.
5 - 2 - 3x = x + 2x + 2
3 - 3x = 3x + 2
Group like terms and make x the subject.
3 - 2 = 3x + 3x
1 = 6x
x = 1/6
Answer:
S(7, -37)
Step-by-step explanation:
Let the coordinates of point S be (x, y).
(14 + x)/2 = 7
14 + x = 14
x = 0
(21 + y)/2 = -8
21 + y = -16
y = -37
I think that the answer is a