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Mathematics 15 Online
OpenStudy (anonymous):

Can somebody help me?

OpenStudy (anonymous):

These are my instructions: in this assignment you will be creating expressions both in word form and algebraic form. An example - 4 more than x (in words) x+4 (algebraic). The assignment does ask that you include different types of expressions using the 4 operations (+ - * /), parentheses, and exponents. The last question asks for a real world scenario.

OpenStudy (anonymous):

And this is what I did: -Commutative Property of Addition- x+4: x more than 4. -Associative Property of Addition- a = (b + c) / b = (a + c): a equals in parenthesis b plus c. -Distributive Property- 2(x + 5) = 2x + 10: twice the sum of x plus 5. -Reflexive Property of Equality- a = b / b=b: a equals b -Symmetric Property of Equality- a = b, b = a: If a equals b, then b equals a.

OpenStudy (anonymous):

Did I do the assignment correctly?

OpenStudy (skullpatrol):

The associative property is not correct.

OpenStudy (anonymous):

Can you tell me what I did wrong?

OpenStudy (skullpatrol):

$$\Huge (a + b) + c = a +(b + c)$$

OpenStudy (skullpatrol):

Also, the assignment is not asking you to put into words the properties of real numbers, but this is good practice :)

OpenStudy (anonymous):

Thank you for looking over my work. I will fix the associative property. Can you help me with the real world scenario part? I can't think of a scenario where you would need to use these in real life.

OpenStudy (skullpatrol):

Also the reflexive property: If a is a real number, then a = a.

OpenStudy (skullpatrol):

For a real-life scenario you could say, if you had x apples and I had 4 more than you then I would have x + 4 apples, right?

OpenStudy (anonymous):

Right. That makes sense. Thank you so much, I will give you a fan and medal.

OpenStudy (anonymous):

I won't use your exact scenario but it will be similar

OpenStudy (skullpatrol):

Thanks for asking questions and trying to learn something new :)

OpenStudy (skullpatrol):

For a real-life scenario you could also say, if you had x apples and I had 4 less than you then I would have x - 4 apples, right?

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