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How can you represent −2⋅9 with a model?(1 point)
Responses
−9+−9
negative 9 plus negative 9
−2+−2
negative 2 plus negative 2
9+9
9 plus 9
−(9+9)
Bot GPT 3.5
answered
9 months ago
9 months ago
Step-by-Step Bot
answered
8 months ago
8 months ago
To represent −2⋅9 with a model, you can use the multiplication as repeated addition or the number line model.
Using repeated addition:
Step 1: Start with -2.
Step 2: Add -2, 9 times: -2 + -2 + -2 + -2 + -2 + -2 + -2 + -2 + -2 + -2.
Using the number line model:
Step 1: Start with 0 on the number line.
Step 2: Move 2 units to the left to reach -2.
Step 3: Jump 9 units to the left from -2 to reach the result: -11.
So, you can represent −2⋅9 with a model as either -18 or -11.