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Mathematics 8 Online
OpenStudy (nbarrera):

Help me & I WILL Medal U!

OpenStudy (nbarrera):

Find the volume of the box. Use the formula V = lwh.

OpenStudy (anonymous):

... we need numbers

Mehek (mehek14):

do you have a pic of it?

OpenStudy (unanimoose):

MULTIPLY ALL THE GIVEN LENGTHS TOGETHER.

OpenStudy (anonymous):

lol :P

OpenStudy (nbarrera):

yes

Mehek (mehek14):

yea basically what @Unanimoose said

OpenStudy (unanimoose):

tHE FORMULA THEY PROVIDE IMPLIES THAT THEY PROBABLY GIVE YOU 3 LENGTHS, MULTIPLY THEM AND THAT IS YOUR VOLUME.

OpenStudy (anonymous):

can we have numbers or a picture?

OpenStudy (nbarrera):

OpenStudy (unanimoose):

WHOA NVM

OpenStudy (unanimoose):

HAVEN'T DONE THAT IN A WHILE, SORRY M8

Mehek (mehek14):

lol

OpenStudy (anonymous):

ok so here's your equation I think.

OpenStudy (anonymous):

(3x+1)*(2x-1)*(x+2)

OpenStudy (anonymous):

now let's work through this.

OpenStudy (anonymous):

first you have to combine like terms, but to do that, you have to take off the parentheses

OpenStudy (anonymous):

3x+1*2x-1*x+2

OpenStudy (nbarrera):

ok

OpenStudy (unanimoose):

IT LOOKS EASIER IF YOU PUT IT LIKE THIS. 3X + 2X + X + 2 + 1 - 1

OpenStudy (anonymous):

ok now to combine like terms, you add or subtract and numbers with the same variables

OpenStudy (unanimoose):

WHAT ARE YOUR OPTIONS?

OpenStudy (unanimoose):

wOOPS, I'M DOING IT WRONG. i ADDED LEL KEK.

OpenStudy (anonymous):

so you have 3x+2x+x=?x

OpenStudy (unanimoose):

bUT YES @okayd IS CORRECT.

OpenStudy (anonymous):

hint add the numbers in front of the x's

OpenStudy (anonymous):

what do you get?

OpenStudy (nbarrera):

I'll give you the answer choices right now

OpenStudy (anonymous):

@nbarrera

OpenStudy (anonymous):

you have 3x+2x+1x=?x and 1-1+2=?

OpenStudy (anonymous):

can you do that?

OpenStudy (anonymous):

ok first thing i thought when i saw dis wus volume, GEEZ THIS IS GONNA BE A BREEZE! then i saw the real thing, HOLY GUACAMOLE IM DEAD!

OpenStudy (anonymous):

lemme try calling somone over to help

OpenStudy (anonymous):

I already simplified it @aahmed123

OpenStudy (nbarrera):

These are the answer choices

OpenStudy (anonymous):

O,O im a failure (goes sulk in a corner of the room)

OpenStudy (anonymous):

I simplified it to 3x+2x+1x= and 1-1+2=

OpenStudy (anonymous):

no not like that aahmed123

OpenStudy (anonymous):

oh darn

OpenStudy (jdoe0001):

hmm

OpenStudy (nbarrera):

OpenStudy (anonymous):

I believe it's A but idk that is asking for x to a power, and that is not something I expected.

OpenStudy (jdoe0001):

looks pretty straightforward to me V = lwh length = 2x-1 width = x+2 height = 3x+1 (2x-1)(x+2)(3x+1) <--- nothing exotic

OpenStudy (nbarrera):

yea that how the equation has to look

OpenStudy (jdoe0001):

so... then just multiply away :)

OpenStudy (nbarrera):

ok so then the answer is B

OpenStudy (jdoe0001):

well.. what did you get for (3x+1)(2x-1) ?

OpenStudy (nbarrera):

6x3+11x2−3x−2

OpenStudy (jdoe0001):

hmmm what did you get say.. on length * width?

OpenStudy (jdoe0001):

or height * length for that matter

OpenStudy (nbarrera):

so whats the answer?

OpenStudy (jdoe0001):

you'd want to do 2 first get the result and multiply times the other

OpenStudy (nbarrera):

isn't 6x3+11x2−3x−2

OpenStudy (nbarrera):

yes or no 6x3+11x2−3x−2

OpenStudy (jdoe0001):

sooo.... what did you multiplied first then?

OpenStudy (nbarrera):

6x3 + 11x2

OpenStudy (jdoe0001):

hmmm well.. what you have is ength = 2x-1 width = x+2 height = 3x+1 (2x-1)(x+2)(3x+1) so... 6x3 is not one of them

OpenStudy (jdoe0001):

the idea behind the exercise is, that you understand it thus you'd want to the multiplication

OpenStudy (nbarrera):

just turned in the test & was Answer C

OpenStudy (nbarrera):

thx anyways

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