The tax itself is $1.47
You can calculate that by adding up all four items. You should get $24.50. Then, you multiply 24.50 by 6%. When multiplying 24.50 and 6%, make sure you multiply (24.50)(0.06) and not (24.50)(0.6).
The total cost of the items after tax is $23.03 just in case you needed that. Just subtract
24.50 - 1.47
IF the estimates are 100% accurate, then the maximum volume of concrete is the product of the maximum dimensions, namely
Vmax=18.32*12.22*0.55=123.13 m^3
and the minimum volume of concrete is the product of the minimum dimensions
Vmin=18.28*12.18*0.45=100.19 m^3
the uncertainty is therefore 123.13-100.19=22.94 m^3
On the practical side, to this uncertainty must be added to
- squareness of the formwork
- evenness of the surface of the crushed stones on which the foundation sits on
- excess of concrete delivered by the truck
- volume of air bubbles trapped in the the concrete, ...
Answer:
variable
Step-by-step explanation:
that is the textbook definition of variable
