anonymous
  • anonymous
Which expressions are equivalent to the one below? Check all that apply. 10x A. 50x/5x B. 10 • 10x - 1 C. 10 • 10x + 1 D. 50x/5 E. (50/5)x F. x5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Imagine if the variable x were to be equivalent to 1 or 2. Input that into 10x (giving you 10 or 20) then try that same method on the answer choices and the answer will be the one that matches your 10x :)
anonymous
  • anonymous
but three are correct
Australopithecus
  • Australopithecus
It says, Check all that apply. that means there are more than one right answer

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More answers

Australopithecus
  • Australopithecus
Which ones do you think are correct?
anonymous
  • anonymous
a, d, and e?
Australopithecus
  • Australopithecus
\[\frac{x}{x} = 1\]
Australopithecus
  • Australopithecus
do you follow?
anonymous
  • anonymous
no.. i don't get these
mLe
  • mLe
a number divided by itself would be 1 so x/x would become 1 times what ever else was attached to it and there would be no x left ("a" cough)
Australopithecus
  • Australopithecus
Well you are mostly right. You seem to get this :) dont be so critical. what I am trying to say is variables divide out. Exponent rules: \[x^{0} = 1\] anything to the power of 0 is equal to 1 \[x^{1} = x\] \[x^{2} = x*x\] \[x^{3} = x*x*x\] etc \[x^{a}x^{b} = x^{a+b}\] \[\frac{x^{a}}{x^{b}} = x^{a}x^{-b} = x^{a + (-b)} = x^{a - b}\] \[x^{-1} = \frac{1}{x^1} = \frac{1}{x}\] \[\frac{1}{x^{-1}} = x^{1} = x\] Examples: \[\frac{34x^2}{x} = 34x\] \[x^5x^3 = x^{5+3} = x^{8}\]
Australopithecus
  • Australopithecus
more examples: anything raised to the power of 0 is 1: \[(3 + x + 3b)^{0} = 1\] \[\frac{(3+x)}{x+2} = (3+x)(x+2)^{-1}\]
Australopithecus
  • Australopithecus
does this help?
anonymous
  • anonymous
It takes me so long to comprehend math
anonymous
  • anonymous
do the answers have to equal the same thing?
Australopithecus
  • Australopithecus
yes
Australopithecus
  • Australopithecus
they all have to equal 10x
Australopithecus
  • Australopithecus
Look at your answers and then look at the rules I gave you
Australopithecus
  • Australopithecus
you are on the right track :)
anonymous
  • anonymous
so i would still go with those answers
anonymous
  • anonymous
i don't see why I wouldn't?
Preetha
  • Preetha
ThatGirl, please don't forget to rate Australopithecus so he can get his reward!
mLe
  • mLe
@thatgirlaggie Reconsider choice A 50x/5x can be rewritten as (50/5)*(x/x) as mentioned, (x/x)=1 and since 50/5 = 10 (50/5)*(x/x) would equal 10 (no x)
Australopithecus
  • Australopithecus
your answers are: \[\frac{50x}{5x}\] \[\frac{50x}{5}\] \[(\frac{50}{5})x\] Multiplication of fraction rule: Note you can divide anything by 1 to make it into a fraction: \[x = \frac{x}{1}\] example: \[62 = \frac{62}{1}\] Multiplication of fractions rule: \[\frac{a}{b}*\frac{b}{c} = \frac{a*b}{b*c}\] example using both \[\frac{52x}{3}*52 = \frac{52x}{3}*\frac{52}{1} = \frac{52x*52}{3*1}\]
Australopithecus
  • Australopithecus
I am giving you rules so you can do these problems I hope that you take the time to review them, it should help you quite a bit, note a, b an x are all just numbers
anonymous
  • anonymous
I'm reviewing them and I see what you're saying
Australopithecus
  • Australopithecus
But yes the answer is D and E \[\frac{50x}{5x} = 10*x^{1-1} = 10*x^{0} = 10 \neq 10x\]
anonymous
  • anonymous
so because A has two x's, there are only two answers?
Australopithecus
  • Australopithecus
yes
anonymous
  • anonymous
i'd say d and e and feel like an idiot now that i get it THANK YOU!!
Australopithecus
  • Australopithecus
the x cancels out in one of them and you end up with just 10
mLe
  • mLe
A has x's that cancel out which is why it does Not work :)
mLe
  • mLe
Don't forget to Rate @Australopithecus for their wonderful help :)
anonymous
  • anonymous
how do I rate you?
mLe
  • mLe
top of screen, orange box, "Rate a Qualified Helper"
Australopithecus
  • Australopithecus
Yeah algebra is pretty simple, I recommend looking up alebra rules and to look at them as you work through these problems. It should help you significantly
anonymous
  • anonymous
That was wrong
anonymous
  • anonymous
it was A, C, and E
Australopithecus
  • Australopithecus
Well they made a mistake lol
Australopithecus
  • Australopithecus
contact your instructor
anonymous
  • anonymous
it's a computer. Apex
mLe
  • mLe
could there have been any typos in your question/options?
mLe
  • mLe
perhaps the ^2 did not come through a copy paste in 50x^2/5x ?
Australopithecus
  • Australopithecus
perhaps
Australopithecus
  • Australopithecus
If that is exactly how it is written and you are being graded by this you should contact their support.
Preetha
  • Preetha
A,C and E can't be right. Check your question. (-:
anonymous
  • anonymous
what is this section of questions?
Preetha
  • Preetha
Great explanation Australopithecus!
Australopithecus
  • Australopithecus
Thank you Preetha

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