Answer:
The constant of proportionality between the actual dimensions of the pavers and the model is 9.
The proportionality constant for the area is 81.
Step-by-step explanation:
To solve this problem, let's transform all quantities to the same units (inches)
The actual dimensions of the pavers are:
Then we divide the real dimensions between those of the model:
Width:
Long =
Then, the constant of proportionality between the actual dimensions of the pavers and the model is 9.
Actual length = model length * (9)
The "A" area of a paver is the product of its width multiplied by its length.
So:
(real width) * (real length) = ((9) Model width) * ((9) model length)
(real width) * (real length) = * (Model width) * (model length)
(real area) = 81 * (Model area)
The proportionality constant for the area is 81.
Answer:
The length of a paver in the model and the length is 1/9.
The constant of proportionality that relates the area 1/81.
Step-by-step explanation:
Area of rectangle is
Dimensions of paver in model:
Area of model
The area of the model is 1/18 square inches.
We know that 1 ft = 12 inches
Actual dimensions of paver:
Actual area is
The actual area is 4.5 square inches.
The constant of proportionality that relates the length of a paver in the model and the length of an actual paver is
The length of a paver in the model and the length is 1/9.
The constant of proportionality that relates the area of an actual paver is
The constant of proportionality that relates the area 1/81.
Answer:
Donovan babysat for 7 hours.
Step-by-step explanation
Numerator = Money Earned Denominator= Hours Worked
= 31.50 x 2= 63 63/9 = 7