Answer:
(4 - a)^2 = 16-8a + a^2
(3x − 1)^2 = 9x^2−6x+1
Step-by-step explanation:
Multiply the left for each equation and they are the same.
The first thing we must do in this case is to calculate the area of the patio.
We have then that:
A = (7.5) * (9) = 67.5 feet ^ 2.
Then, we calculate the area of each stone:
Ap = (6) * (6) = 36in ^ 2
We make the conversion to feet:
Ap = (36) (in ^ 2) * (1/12) ^ 2 (foot / inches) ^ 2
Ap = 0.25 feet ^ 2
Finally we have that the area covered by all the stones is:
(0.25) * (275) = 68.75 feet ^ 2
We observed that:
68.75 feet ^ 2> 67.5 feet ^ 2
Answer:
there are enough stones to cover the patio
68.75 feet ^ 2> 67.5 feet ^ 2