Explanation:
The expressions "3.2^2−1" and "10−0.33⋅2" should be joined by:
For the first blank, the correct option is "An Equals sign."
For the second blank, the correct option is "Equation."
The reason for this is that when the expressions are joined by an equals sign, it indicates that both expressions are equal to each other. This forms an equation, which is a mathematical statement that shows the equality between two expressions.
For example, if we join the two expressions "3.2^2−1" and "10−0.33⋅2" with an equals sign, we get:
3.2^2−1 = 10−0.33⋅2
This equation represents the equality between the two expressions. By joining the expressions with an equals sign, we can compare and evaluate the expressions to determine if they are equal or not.