Complete question :
A 12-foot by 15-foot patio is increased by placing a stone border around the patio. The width of the border is the same all around the patio.The perimeter of the patio after it is expanded is 74 feet. The equation which represents x, the width of the border is 2[(12+2x)+15+2x)]=74. What is the width of the border?
1) 2 1/2 feet
2) 3 feet
4) 5 feet
5) 8 1/2 feet
Answer:
2.5
Step-by-step explanation:
Solving for X in the perimeter equation :
2[(12+2x)+15+2x)]=74
Open the bracket
2[(12 + 2x + 15 + 2x)] = 74
2(27 + 4x) = 74
54 + 8x = 74
8x = 74 - 54
8x = 20
x = 20/8
x = 2.5
Hence, width fo border = 2.5
Answer:
Step-by-step explanation:
It is given that A rectangular prism has a length of 
yards a width of 
yards, and a height of 4 yards.
Now, the volume of the prism is given as:
Therefore, the volume of the rectangular prism will be .
I am thinking that my solution is correct
You can put each into standard form to see whether they have the right value.
5.5·10⁴ = 55,000 ≠ 0.00055
