We’ve seen that natural numbers are closed under addition. Determine the closure of natural numbers under the other three operat
ions, and give examples to support your answers.
1 answer:
Natural numbers are not closed under subtraction. In fact, any operation has no solution using natural numbers.
Natural numbers are closed under multiplication. In fact, any operation means to sum
by itself
times, and we already know that natural numbers are closed under sum.
Natural numbers are not closed under division. In fact, if doesn't divide
, any operation
has no solution using natural numbers.
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Using the distance formula, , what is the distance between point (-2, 2) and point (4, 4) rounded to the nearest tenth?
Using the points given, plug them into the equation.
Plug this into a calculator and you get 6.32455532
Since you only need it up to the tenth (0.1), round up 6.32
<em>Five or more, let it soar. Four or less, let it rest.</em>
Since two is lower than four, we drop it.
Therefore, the distance between points (-2, 2) and (4, 4) is 6.3
Hope this helps ^w^