Well, ....... X=57/2 or 28.5 but not are equivalent
Answer:
b
Step-by-step explanation:
Reasoning: the square root of 16 is 4 and 81 square root is 9
so it is b pls give brainliest! have a good day
Psi stands for pounds per square-inch.
It is a measure of pressure, and is the equivalent pressure of putting one pound on a square-inch of area.
For example, someone weighing 180 pounds standing on his feet, with a footprint area of 72 square-inches would exert a pressure of 180 pounds/72 square inches = 2.5 pounds per square-inch, or 2.5 psi.
