5 seconds
because that is the positive zero of that equation
Answer:
180
Step-by-step explanation:
At the beggining, it says they are stacked in 5 layers which means the number of cubes is divisible by 5.
If the number of cubes equals x:
The least amount of sugar cubes the Jones family could have used is 
which equals 122. The most they couldve used is 
which equals 183.
Based on the information from the Jones family, x is between 122 and 183.
Based on the information from the Connor's, x is between 176 and 264.
Based on the information from both, x is between 176 and 183. The only number that is divisible by 5 between those numbers is 180 cubes.
Answer:
Step-by-step explanation:
Let L represent the length of the rectangular porch.
Let W represent the width of the rectangular porch.
The area of the rectangular porch is expressed as LW.
Bills new porch is rectangular with an area of 50 square feet. Therefore,
LW = 50 - - - - - - - - 1
if the length is two times the width, it means that
L = 2W
Substituting L = 2W into equation 1, it becomes
2W × W = 50
2W^2 = 50
W^2 = 50/2 = 25
W = √25 = 5
LW = 50
5L = 50
L = 50/5 = 10
The perimeter of he rectangle is
Perimeter = 2(L + W)
Perimeter = 2(10 + 5) = 2 × 15
Perimeter = 30 feet
