Final answer:
The only correct equation presented is a) 3⋅3=32=9, as this is a proper application of the multiplication and exponentiation operations in arithmetic.
Step-by-step explanation:
The correct equation among the options given is a) 3⋅3=32=9. In mathematical operations, multiplication symbolized by the (⋅) is a basic arithmetic operation representing the repeated addition of the same number. When 3 is multiplied by itself, the product is 9, which can also be expressed as 3 squared (32) equals 9. The other options b) 4⋅1=2(4)=8, c) 27.7=2(7)=49, and d) 11÷14=2 are incorrect based on standard arithmetic rules.