Final answer:
The product of the two numbers 0.09 and 0.4 is 0.036. This is a simple multiplication of decimals, a key concept in high school mathematics.
Step-by-step explanation:
The student has asked for the product of two numbers: 0.09 and 0.4. To calculate the expression 0.09 x 0.4, we simply multiply the two numbers together:
0.09 x 0.4 = 0.036
This calculation demonstrates a basic arithmetic operation involving decimals, which is a foundational mathematical skill taught typically at the middle school and high school levels. Expressions like these are important as they form the basis for more complex topics such as algebra and calculus.