lilai3
  • lilai3
How do you write: 42 decreased by twice a number in algebraic expression WILL REWARD MEDAL
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
RadEn
  • RadEn
42 - 2x (in x)
lilai3
  • lilai3
please explain
lilai3
  • lilai3
why isn't it 2x-42?

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More answers

RadEn
  • RadEn
that's just a translater from words to expression algebraic
lilai3
  • lilai3
oh. what if it says... the sum of the cube of a number and 12.... is it n^3 +12?
RadEn
  • RadEn
if it says : 42 decreased "from" twice a number, yeah it is 2x - 4 the sum of the cube of a number and 12, yeah you are right it is n^3 + 12
RadEn
  • RadEn
* 2x - 42 i mean
lilai3
  • lilai3
oh. thank you very much.
RadEn
  • RadEn
you're welcome
lilai3
  • lilai3
also, i have one more problem
lilai3
  • lilai3
name the property used in each equation. then find the value of n. 7y+y=7y+ny
RadEn
  • RadEn
im not sure is the answer " reflexive or symmetric property" im forget this, sorry :)
RadEn
  • RadEn
@rizwan_uet , you know this ?
lilai3
  • lilai3
oh.at least you told me one of the,. thanks. i thought it was commutitive.. LOL. uhm... what is n?
anonymous
  • anonymous
isnt it obeys distributive property??? @RadEn
RadEn
  • RadEn
a+b = b+a (it is commutative) a(b+c) = ab + ac (it is distributive property)
lilai3
  • lilai3
so is it reflexive, since symmetry it has to be 7y+y=ny+7y, but it's not... so is it reflexive?
anonymous
  • anonymous
if we take y common on both sides we get y(7+1) =y (7+n) now using distributive property on each side we get 7y+y=7y+ny
lilai3
  • lilai3
i don't get it....
RadEn
  • RadEn
me too, haha...
anonymous
  • anonymous
you have this equation 7y+y=7y+ny now some property of real number was applied to a certain equation to get 7y+y=7y+ny my guess was that the equation was in this form y(7+1) =y (7+n) now applying distributive property in both sides we get 7y+y=7y+ny sorry for my weak english LOL
lilai3
  • lilai3
lol. it wasn't weak. :P ...but then what is n? because you have to find the value of that.... is it 1? or not... idunno
anonymous
  • anonymous
7y+y=7y+ny the only value that n can hold is 1 to get both sides similer of the above equation
lilai3
  • lilai3
so i'm right? it's distributive and 1?
anonymous
  • anonymous
for the value of n you are absolutly right but for distributive property it was my state of arguments
lilai3
  • lilai3
oh. okay... can you also do another problem...let's say(random): (6+n)x+15x
anonymous
  • anonymous
(6+n)x+15x using multiplicative property property we get x(6+n)+15 now using distributive property 6x+nx +15x
lilai3
  • lilai3
why did you add 15 x to the equation?
anonymous
  • anonymous
its the part of equation
lilai3
  • lilai3
then where's the equal sign?
anonymous
  • anonymous
hmm wait
lilai3
  • lilai3
okay
anonymous
  • anonymous
(6+n)x+15x using multiplicative property property we get = x(6+n)+15x now using distributive property = 6x+nx +15x
anonymous
  • anonymous
does this make sense now??
lilai3
  • lilai3
yes, so it is distributive property, and the n is 9, right?
anonymous
  • anonymous
basically you wrote this at first (6+n)x+15x now its not an equation until you mention some equality sign here now you cant find n in the absence of equality sign
anonymous
  • anonymous
sorry i lost internet connection
lilai3
  • lilai3
it's alright, and thank you!
anonymous
  • anonymous
welcome

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