Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

This is the link to the worksheet. I need help on question 2 on the second page. Thanks. http://static.k12.com/eli/bb/1211/5_68981/1_124222_8_68989/73a9e1e937f929aa0273c1ce37d80775f5e5d291/media/d707bf1f569b336d45e26860d378b0acb041bfe9/AAHS_M5S2L4_1_teacher_graded_assignment_PROJECTGUIDE.pdf

OpenStudy (anonymous):

2a. form an equation liddis w = [x^2+18x+45] ÷ (x+15) solve for w

OpenStudy (anonymous):

What about for 2.b.?

ganeshie8 (ganeshie8):

you need to factor `x2+18x+45` and see if that denominator cancels out

OpenStudy (anonymous):

oh okay. Lemme try

ganeshie8 (ganeshie8):

find two numbers such that : 1) they add up to `18` 2) they multiply to `45`

OpenStudy (anonymous):

5(9 + 4x)? I factored x2+18x+45

ganeshie8 (ganeshie8):

thats a good try, but no... have u found ur two magic numbers ? :)

OpenStudy (anonymous):

I'm kinda confused. Can you take me step by step? I seriously suck at math and am sadly a slow learner.

ganeshie8 (ganeshie8):

we want to factor \(\large x^2+18x+45\) so we start by finding two numbers such that : 1) they add up to `18` 2) they multiply to `45`

ganeshie8 (ganeshie8):

can you find the two numbers ? just guess and check..

OpenStudy (anonymous):

(15 + x)(3 + x)

ganeshie8 (ganeshie8):

Excellent ! we write variables first : \[\large x^2 + 18x + 45 = (x+15)(x+3)\]

OpenStudy (yanasidlinskiy):

By the way, @Kirs \(\Huge\bf \color{yellow}{Welcome~to~OpenStudy!!}\hspace{-310pt}\color{cyan}{Welcome~to~OpenStudy!!}\hspace{-307.1pt}\color{midnightblue}{Welcome~to~\color{purple}{Open}}\color{blue}{Study!!!!}\)

ganeshie8 (ganeshie8):

and that expression represents \(\large \text{Area }\) right ?

OpenStudy (anonymous):

thanks haha and yeah?

ganeshie8 (ganeshie8):

which also equals \(\large wl = w(x+15)\) so : \(\large w(x+15) = (x+15)(x+3)\) \(\large w = x+3\)

ganeshie8 (ganeshie8):

see if that makes more or less sense...

OpenStudy (anonymous):

It makes more sense lol

ganeshie8 (ganeshie8):

good :) we're done with part a of 2nd question can u work part b ?

OpenStudy (anonymous):

no..haha I need help on that too.

ganeshie8 (ganeshie8):

\(\large l = x+15\) \(\large w = x+3\) \(\large A = wl\)

ganeshie8 (ganeshie8):

plugin \(\large x = 8\) and find out l,w,A values

OpenStudy (anonymous):

okay lemme try

OpenStudy (anonymous):

So i multiply 23 and 11 right?

OpenStudy (anonymous):

I got 253

ganeshie8 (ganeshie8):

Yes thats the Area ! good job !!

OpenStudy (anonymous):

yay!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!