anonymous
  • anonymous
WILL FAN AND MEDAL FOR HELP ON QUESTIONS!!!!!
Mathematics
schrodinger
  • schrodinger
See more answers at brainly.com
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.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

anonymous
  • anonymous
what are the questions? :/
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
1 Attachment

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
anonymous
  • anonymous
thats alot. lol
anonymous
  • anonymous
can you help me on some @YouDontKnowMeOo ?
anonymous
  • anonymous
you got to post one at a time lol
anonymous
  • anonymous
is it too small?
anonymous
  • anonymous
just zoom in on the page to make it bigger
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
each queation is susposed to have it's own thing
anonymous
  • anonymous
question*
pooja195
  • pooja195
Its own post.
anonymous
  • anonymous
ok
anonymous
  • anonymous
ill make a new one and tag you in it
anonymous
  • anonymous
Which question are we solving ? :)
anonymous
  • anonymous
the first
anonymous
  • anonymous
Alright
anonymous
  • anonymous
So coefficients means the number in front of the 'x' So just look in front of those 'x' values :)
anonymous
  • anonymous
C? 5,2,-4
anonymous
  • anonymous
5x^2 + 2x - 4 What do you think the coefficients are?
anonymous
  • anonymous
yes ! You are correct ^^
anonymous
  • anonymous
Thanks what about the next question
anonymous
  • anonymous
Except for (-4) because there is no pro numeral following the coefficient (-4)
anonymous
  • anonymous
ok
anonymous
  • anonymous
Okay so we have: 7x^2 - x -2 - (-6x^3 + 3)
anonymous
  • anonymous
In this scenario, we just have to expand and simplify, just be careful of that minus ^^
anonymous
  • anonymous
okay
anonymous
  • anonymous
can you walk me through it?
anonymous
  • anonymous
Okay sure ^^
anonymous
  • anonymous
Firstly, I would expand -(-6x^3 + 3 ) first
anonymous
  • anonymous
okay
anonymous
  • anonymous
So we get something like: +6x^3 - 3
anonymous
  • anonymous
yep
anonymous
  • anonymous
Now just collect like terms :)
anonymous
  • anonymous
would you get rid of the plus sign?
anonymous
  • anonymous
yeah you can get rid of it, I just put it in there to show you that I have expanded the minus sign inwards ^^
anonymous
  • anonymous
wouldn;t it be +6x^3 +3 ?
anonymous
  • anonymous
Ah that's the thing - (6x^3 + 3 = -6x^3 - 3
anonymous
  • anonymous
oh alright
anonymous
  • anonymous
Why? What does - x + = ? Remember these rules - x - = + - x + = - + x - = - + x + = +
anonymous
  • anonymous
yeah i know those
anonymous
  • anonymous
So have you resolve the question, by collecting the like terms?
anonymous
  • anonymous
would it be 3x^3 ?
anonymous
  • anonymous
How did you get 3x^3?
anonymous
  • anonymous
By simplifying the second part
anonymous
  • anonymous
I show you how I did it and just follow through my steps :)
anonymous
  • anonymous
okay
anonymous
  • anonymous
= 7x^2 - x - 2 - ( -6x^3 + 3 ) = 7x^2 - x - 2 + 6x^3 - 3 = 6x^3 + 7x^2 - x - 5
anonymous
  • anonymous
Is there anything you don't understand, please point it out ^^
anonymous
  • anonymous
ok i think i get it now
anonymous
  • anonymous
Okay no problem, just refer back to this previous example that we have do together to just briefly understand the concept :) So next question?
anonymous
  • anonymous
yep
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
so you dont have to scroll back up
anonymous
  • anonymous
Okay cool
anonymous
  • anonymous
So in this question 15), we are dealing with powers, ideally 10's
anonymous
  • anonymous
So what do you think 2.3 x 10^1 = ?
anonymous
  • anonymous
do we add the powers of ten?
anonymous
  • anonymous
In this case, we are multiplying by powers of ten's
anonymous
  • anonymous
and add the regular numbers?
anonymous
  • anonymous
ok
anonymous
  • anonymous
There isn't much adding going on in Q15) its all multiplying :)
anonymous
  • anonymous
would the answer be 9.3• 10^7 or 9.3•10^6
anonymous
  • anonymous
hmm... would you like to try again, that answer seems way off :D
anonymous
  • anonymous
here 2.3 x 10^ 1 = ?
anonymous
  • anonymous
ok
anonymous
  • anonymous
We'll break it down
anonymous
  • anonymous
they aren't like terms thought
anonymous
  • anonymous
|dw:1433512805819:dw|
anonymous
  • anonymous
As we multiply by 10^1 We are moving the decimal point across to the right -> Hence it is moving to make the number bigger
anonymous
  • anonymous
none of the answers would match that.
anonymous
  • anonymous
i think i was right before, thats how my teacher taught me how to do it.
anonymous
  • anonymous
Are you allowed to use calculators?
anonymous
  • anonymous
yes
anonymous
  • anonymous
Ah okay, that makes things much more simpler XD
anonymous
  • anonymous
i think your supposed to multiply 2.3 and 7 and multiply the powers of ten
anonymous
  • anonymous
would the answer be a
anonymous
  • anonymous
Just type in the calculator as it is displayed (2.3 x 10^1)(7 x 10^6) = 161000000
anonymous
  • anonymous
am i right?
anonymous
  • anonymous
well no to be honest, i think you may have interpreted the question wrong perhaps...
anonymous
  • anonymous
what do you think it is?
anonymous
  • anonymous
The value is 1.61 x 10^7

Looking for something else?

Not the answer you are looking for? Search for more explanations.