Algebra help: 3-2(x+3)+2=1,1/3(t-5)-6,if a blue heron that m

lalcasio

New member
Joined
Sep 9, 2006
Messages
1
1) 3 - 2(x + 3) + 2 = 1

2) 1/3(t - 5) - 6

3) If a blue heroin that measures 3.5 inches in the photo is actually 3.75 feet tall, then approximately how long is its beak if it measures 0.4 inches in the photo?
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,724
Re: Algebra help

Looks suspiciously like you skipped classes, now want us to do your homework...
Let's see:
2(x-5) = 4 : solve for x
If you can't do that, then you need to be in class, not here.
 

jonboy

Full Member
Joined
Jun 8, 2006
Messages
547
Re: Algebra help

lalcasio said:
Solve (1)\(\displaystyle \L \;3-2(x+3)+2=1\;\) and (2)\(\displaystyle \L \;1/3(t-5)\,=\,6\;\)

(3)If a blue heroin that measures 3.5 incehes in the photo is actually 3.75 feet tall approximately how long is its beak of it measures 0.4 inchesin the photo.
1) \(\displaystyle \L 3\,-\,2\,(x\,+\,3)\,+\,2\,=\,1\;\)

\(\displaystyle \L 3\,-\,2x\,-\,6\,+\,2\,=\,1\)

\(\displaystyle \L -\,2x\,-\,1\,=\,1\)

\(\displaystyle \L -\,2x\,=\,2\)

\(\displaystyle \L x\,=\,-\,1\)

So:\(\displaystyle \L \;3\,-\,2\,(\,-\,1\,+\,3)\,+\,2\,=\,1\;\)

On the second I'm gonna go out on my and say you mean: \(\displaystyle \L \;\frac{1}{3(t\,-\,5)}\,=\,6\)

2) \(\displaystyle \L \;\frac{1}{3t\,-\,15}\,=\,\frac{6}{1}\)


Criss - Cross Multiplication:\(\displaystyle \L \;1\,=\,18t\,-\,90\)

\(\displaystyle \L \;90\,=\,18t\)

\(\displaystyle \L \;t\,=\,5\)

3) Ok lets make a proportional proportion!


\(\displaystyle \L \frac{3.5}{3.75}\,=\,\frac{.4}{x}\)


\(\displaystyle \L 1.5\,=\,3.5x\)


\(\displaystyle \L x\,=\,.428571429\,\to\,\approx.43\,in.\)
 
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