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lsizzle59
22.09.2020 •
Mathematics
Sam wanted to find the difference 10 -(-6).
He said he would add the opposite. This is what he did:
10 - (-6) = 10 + (-6) = 4
Was Sam's thinking correct? Explain. In your explanation, describe how to add the
opposite and use a number line to find the value of 10 -(-6).
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Ответ:
Given:
The expression is
.
Sam's calculation is![10 - (-6) = 10 + (-6) = 4](/tpl/images/0775/8903/430f1.png)
To find:
Whether Sam's thinking correct or not.
Solution:
We have,
Therefore, Sam's thinking was incorrect.
On number first we have to move 10 units from 0 in positive direction after that negative sign means move in left direction.
But we have 2 negative signs so we need to move 6 units more on positive or right direct as shown below.
Ответ:
x+0.05x=3.15 , which has one solution.
Step-by-step explanation: