please help me understand how to do this, i’m completely lost | Mathematics | Page 1

near spindle Jul 13, 2024, 2:56 AM

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pseudo pendantBOT Jul 13, 2024, 2:56 AM

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near spindle

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soft pier Jul 13, 2024, 3:08 AM

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near spindle

First step is to read the question.

near spindle Jul 13, 2024, 3:56 AM

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i did

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is it x|n>7?

near spindle Jul 13, 2024, 3:57 AM

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soft pier First step is to read the question.

?

soft pier Jul 13, 2024, 3:57 AM

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near spindle is it x|n>7?

...I don't know what "x|n" is.

near spindle Jul 13, 2024, 3:57 AM

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x|x

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but i used n

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because they used the value of n

soft pier Jul 13, 2024, 3:58 AM

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...what is "x|x"?

near spindle Jul 13, 2024, 3:58 AM

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set of x values

soft pier Jul 13, 2024, 3:58 AM

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That notation to me means "x divides x", which is just... trivial.

near spindle Jul 13, 2024, 3:58 AM

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i think

soft pier Jul 13, 2024, 3:59 AM

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And a statement that a number divides another number doesn't belong in any equation or inequality.

near spindle Jul 13, 2024, 3:59 AM

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oh

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so what is the answer

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or rather

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how would i go about solving this problem

near spindle Jul 13, 2024, 4:01 AM

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soft pier And a statement that a number divides another number doesn't belong in any equat...

?

soft pier Jul 13, 2024, 4:03 AM

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Oh wait, did you mean {x | x < 7}?

near spindle Jul 13, 2024, 4:03 AM

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ya

soft pier Jul 13, 2024, 4:03 AM

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See, the curly brackets change everything there.

near spindle Jul 13, 2024, 4:03 AM

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lol

soft pier Jul 13, 2024, 4:04 AM

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With curly brackets, it's a description of a set. Without, it's just confusing.

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Also, show your work.

near spindle Jul 13, 2024, 4:04 AM

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so 42/6=7

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so i know that if the number is larger than 7 the statement will be true

soft pier Jul 13, 2024, 4:05 AM

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...then why did you say less than instead of greater than?

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And why did you solve an equation instead of an inequality?

near spindle Jul 13, 2024, 4:05 AM

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soft pier With curly brackets, it's a description of a set. Without, it's just confusing.

also, am i allowed to substitute the n for x like i did b4?

near spindle Jul 13, 2024, 4:05 AM

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soft pier And why did you solve an equation instead of an inequality?

wym

soft pier Jul 13, 2024, 4:05 AM

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near spindle also, am i allowed to substitute the n for x like i did b4?

You have to have the same symbol on both sides.

near spindle Jul 13, 2024, 4:06 AM

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oh

near spindle Jul 13, 2024, 4:06 AM

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soft pier ...then why did you say less than instead of greater than?

typo

near spindle Jul 13, 2024, 4:06 AM

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soft pier And why did you solve an equation instead of an inequality?

i dont understand what you mean

soft pier Jul 13, 2024, 4:08 AM

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near spindle i dont understand what you mean

Look. What I think you should've done is taken the statement "the product of 6 and n is more than 42" and translated that directly into an inequality: 6n > 42, then solved the inequality algebraically.

near spindle Jul 13, 2024, 4:09 AM

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but it says to express my answer in set builder notation

soft pier Jul 13, 2024, 4:11 AM

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near spindle but it says to express my answer in set builder notation

...we have to get the answer before we can express it.

near spindle Jul 13, 2024, 4:11 AM

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ok

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so n>7

soft pier Jul 13, 2024, 4:12 AM

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Right. And then the set of solutions is just the set of all n such that... that.

near spindle Jul 13, 2024, 4:13 AM

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so {x|x>7}?

soft pier Jul 13, 2024, 4:14 AM

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Right.

near spindle Jul 13, 2024, 4:14 AM

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alr

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ty for your help

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u a real one

soft pier Jul 13, 2024, 4:14 AM

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FYI.

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Just to avoid this kind of confusion in the future.

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When we say {x | x > 7}, we read that as "the set of all x such that x is greater than 7". The "|" gets read as "such that" when it's inside a set, but gets read as "divides" when it's not.

near spindle Jul 13, 2024, 4:15 AM

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ohh

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ok

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ty for the clarification

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have a good one and i hope tosee u soon

soft pier Jul 13, 2024, 4:17 AM

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near spindle have a good one and i hope tosee u soon

...that's kind of creepy in this context.

near spindle Jul 13, 2024, 7:10 PM

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sorry

ionic notch Jul 15, 2024, 5:23 PM

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So, the question says that the product of 6 and another number "n" is more than 42. So, you have to write the inequality, find the range of n in set builder notation. The range will be n>6

#please help me understand how to do this, i’m completely lost