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Need help on math hw Should be easy

So before I start, I'm in 10th grade, and I literally forgot all of this. And on the other hand, we took NO notes in class, my teacher just gave it to us. (Sorry if it's a lot!) i'm really confuzzled . Thanks to all who can help! I mean I remember all of these, just forgot how to do it.. I think we use PEMDAS but idk
Instead of typing it out, I'll post a picture so you can get a visual look at it .

P.S if my answers are incorrect, correct them :o? thanks ;D

http://tinypic.com/r/2dana6w/5

answer one: http://tinypic.com/r/2dkloqr/5

August 29, 2013

49 Comments • Newest first

Coordination

Lol yeah I forgot, but now I understand it now thanks to helpers ^.^. <3

Reply August 30, 2013
Crocboy200

You seriously forgot how to do this? Shame, shame. You can just use your graphing calculator...

Reply August 30, 2013
Hatchet

oh my god this thread.

Reply August 30, 2013
Coordination

@sellinscrolls I'm in adv geo.
This is just preview works on what I should already know I just forgot haha

Reply August 30, 2013
OhShutUp

what exactly do all of you guys gain from insulting OP's intelligence?

Reply August 30, 2013 - edited
sellinscrolls

This is basic math dude. No offense though.
But, shouldn't you be in Geometry by now?
</3 o.o

Reply August 30, 2013 - edited
Dsfan33224

17 is -44

Reply August 30, 2013 - edited
MagicalImage

You're in 10th grade and you're taking algebra?

Reply August 30, 2013 - edited
NaturalTEARS

[quote=Coordination]@icemage11 i been having -82 xD.
@naturaltears i got the same answers for like 14-16, but ice said i was wrong? and number 17, recheck the problem there int (10-1(1)) or whatever[/quote]

you have a negative on those numbers (:
and i'll get to you back! i'm kinda busy

Reply August 30, 2013 - edited
Coordination

@icemage11 i been having -82 xD.
@naturaltears i got the same answers for like 14-16, but ice said i was wrong? and number 17, recheck the problem there int (10-1(1)) or whatever

Reply August 30, 2013 - edited
NaturalTEARS

@Coordination: It's fine - you'll get the hang of it! Practice makes perfect! If you need any help feel free to PM me!

Reply August 30, 2013 - edited
icemage11

10: (-7)-((-5)-10)x(-5) = (-7)-(-15)x(-5) = (-7)-75 = -82

Reply August 30, 2013 - edited
Coordination

@icemage11 DUH -7! xD What about the others? im serious i get the same answers

and @naturaltears it honestly means A LOT you're helping me! almost the whole class is failing and its the 2nd week of school. we're not dumb, but its the teacher

Reply August 30, 2013 - edited
NaturalTEARS

@Coordination:
Go to page 4, I've done the solutions for some of the questions you're stuck with.
I'm still doing them!

Reply August 30, 2013 - edited
icemage11

It's not 7.

2-5-(-6)-10 = -3+6-10=3-10= -7.

Reply August 30, 2013 - edited
TrumanB

I wish my grade 10 math was this D:. When I went into grade 10 from 9... major math lvl change D:. < So I ended up with a really low mark QQ- plus most highschool teachers sck. -.-. Well I'm going into grade 12 now.. I did ok in 11 once I got used to it .
Edit: I also noticed a few common mistakes you made. if you see -(-5) < just change that to +5

Reply August 30, 2013 - edited
NaturalTEARS

SIGH.........i miss these kinds of math.........

5.
2 - 5 - (-6) -10
= -3 + 6 - 10
= 3 - 10
= -7

7.
(-4) x (-2) + (-8) - (-6)
= 8 + (-8 + 6)
= 8 + (-2)
= 8 - 2
= 6

9.
(-6) - ((-5) + 7) - 2
-6 - (2) - 2
= -8 - 2
= -10

12.
1 - -16/(5-9) <- first you want to make the 1 have the same denominator as the -16/(5-9) so times (5-9)
= (5-9)/(5-9) + 16/(5-9)
= 4/4 + 16/4
= 20/4
= 5

14.
You're almost right, but you need to make sure you subtract/add properly.
= -2 - (-10)
= -2 + 10
= 8

15.
2 - (7 + 5 - (-4))
= 2 - (12 + 4)
= 2 - (16)
= - 14

16.
((-5) - (9 - 3)) x (-5)) <- because of BODMAS (or whatever), you'll need to solve the first part since it's in brackets
= ((-5) - (6)) x (-5))
= (-11) x (-5)
= 55

17.
(10 - 1(-1)) ((-7) + 3) <- do brackets first then MULTIPLY.
= (10 + 1) (-4)
= (11) (-4)
= -44

Reply August 29, 2013 - edited
icemage11

5, 10, 14, 15, 16, 17 is still wrong. At least you're improving

Reply August 29, 2013 - edited
Coordination

@djhfreak yeah i knew that already, but i just didnt know when to do it, but now i do . <3

Reply August 29, 2013 - edited
djhfreak

@Coordination

Whenever you see two negative (-) signs, it basically means that you're adding. So for example, 5 - (-4) = 9, because 5 + 4 = 9. It's the same vice versa, (-5) - (-8) = 3, because (-5) + 8 = 3.

Reply August 29, 2013 - edited
Coordination

@icemage11 Idk how to do 12, it has 2 " - " signs .-. ill post up a comment of my new answers ( i got them now)

@djhfreak i know its just review and i snoozed lol and thanks

Edit: @icemage11 these are my new answers

1) -2
5) -1
7) 6
9) -10
10) -2
11) -7
12) idk how to do
13) -24
14) -8
15) i still got -32
16) -55
17) -40

Reply August 29, 2013 - edited
djhfreak

Just letting you know, this looks like math for Grade 6 and 7.

Number 15 is (-14).

Reply August 29, 2013 - edited
Coordination

@icemage11 what the fudgeee <l3 number one is -2 right

@ecliptic no i actually know it but for some reason im tweaking right now o.o

Reply August 29, 2013 - edited
Ecliptic

[quote=Coordination]@ecliptic i know ! I just simply forgot[/quote]
You forgot basic math?

Reply August 29, 2013 - edited
icemage11

1, 5, 7, 9, 10, 13, 14, 15, 16, 17 are all wrong.

Where's 12?

Reply August 29, 2013 - edited
Coordination

@ineqt, thanks i know that already though but it kinda helped me with the -8-(-10) one ^.^

Reply August 29, 2013 - edited
Ineqt

Remember that negatives negate each other. So -8-(-10) is 2 since it's -8 + 10. Also you probably know this but follow PEMDAS. Although M and D/A and S are interchangeable depending on which comes first. So sometimes you do division before multiplication or Subtraction instead of addition first.

I would check them for you but I don't wanna strain my neck or turn my laptop to write them down. Good luck though Glad to see at least someone is getting their homework done

Reply August 29, 2013 - edited
Ecliptic

Dude, how can you not do this....

YOU ARE IN GRADE 10, this is like grade 5 stuff, not even

Reply August 29, 2013 - edited
Coordination

@fun2killu shut up
@metaghost4 omg i hope u remember me xD i think we're added here and i've been doing nothing, teacher is making us learn something different i just snoozed

anyways, whats up with number 12? havent seen one that has 2 "-" in a row

@exusia nope in adv. geo. just right now its beg. of school so we just learning what we already know

Reply August 29, 2013 - edited
Coordination

@noobsnipe haha thanks! and im good at math, just this time i snoozed x.x.

@lowwillpower thanks man

ill post up another ss of my answers soon

Reply August 29, 2013 - edited
LowWillpower

[quote=Coordination]@cindertea thanks ^.^
@fun2killu i did, but it comes up with the basics, which i know already. i just need help with ones that have 2 parenthesis and brackets and parenthesis.[/quote]
Even double brackets still falls within simple order of operations. Do things within brackets before using the bracket context as part of another operation (e.g. 4(3+(7x(5+8))), start with 5+ 8 = 13, then do 7x13 = 91, then 3+ 91 = 94 and then 4x94 = 376).

Reply August 29, 2013 - edited
Coordination

thanks to all u guys above ^, starting to know it more!
@fun2killu my internet is slow a'f .-. <l3

Reply August 29, 2013 - edited
Coordination

@cindertea thanks ^.^
@fun2killu i did, but it comes up with the basics, which i know already. i just need help with ones that have 2 parenthesis and brackets and parenthesis.

Reply August 29, 2013 - edited
LowWillpower

Yeah it's all bedmas/pedmas and rules of operations.

Reply August 29, 2013 - edited
fun2killu

you really could have just googled order of operations... just sayin'

Reply August 29, 2013 - edited
Coordination

@icemage11 and @onelife thanks! I'm so stupid, i should know these and i do.-. I hope theres a way I can PM you guys, haven't used basil in a while. and

@ineedhelpplz lol i wish, but this teacher freaky

@foxes what about like number 13 xD

Reply August 29, 2013 - edited
icemage11

#8 is not 21.

3 + 6 - (-8) - 4 = 3+6+8-4 = 13.

Reply August 29, 2013 - edited
OneLife

i think 8 is 21 unless im doing it wrong

Reply August 29, 2013 - edited
Coordination

@icemage11 it is, i mean I remember all of these, they're easy, but i havent touched them in so long and thanks ;D

edit: got number 1 now

Reply August 29, 2013 - edited
icemage11

This looks like grade 6 to me o.o

Anyway, 1 and 7 are wrong.

Reply August 29, 2013 - edited