All Answers 359393 Answers

+118742

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Can you be more specific about what is confusing you?
Do you know how to label the sides of the right angled triangle?

MelodyNov 19, 2013

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GuestNov 19, 2013

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GuestNov 19, 2013

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and you are not

GuestNov 19, 2013

+22

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Can you give an example?

F.S.Nov 19, 2013

+22

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F.S.Nov 19, 2013

+118742

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http://en.wikipedia.org/wiki/Quadratic_formula

You could have googled it for yourself it would have been quicker for you.

MelodyNov 19, 2013

+118742

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r = (1/5)(ln 3)
r = 0.220
explained

This has just been done straight on the calculator

1 / 5 * ln 3 =

The calc answer is 0.2197...
Your answer has been rounded of to 3 decimal places or 3 significant figures (both the same in this case)

What is there to explain?

MelodyNov 19, 2013

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Thats not an inequality, but the answer is .0277777777777777777778. Multiply both sides by 9y and then divide -4 by 144 and theres your answer.

GuestNov 19, 2013

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im pretty sure it's 2.2 repeating, you might still want to double check it.

GuestNov 19, 2013

+118742

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how do I estimate (-0.173)(-8)

Maybe -0.2*-8 = 1.6 this will be a little big.

MelodyNov 19, 2013

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GuestNov 19, 2013

Nov 18, 2013

+118742

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2 equations will solve for 2 unknows.
You have 4 unknowns
You cannot solve it.

Is there more to your question that you have not posted?

MelodyNov 18, 2013

+118742

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The reciprocal index (change the index to an improper fraction first.)

MelodyNov 18, 2013

+118742

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When do u switch places on a number when ur calculating with roots. for example. √(1-√2)². and then it becomes √2-1. WHYYYY???

When a sqrt is written into a question, only the positive root is required. 1-sqrt2 is negative so that is not the correct root. The correct one would be -(1-sqrt2) = -1+sqrt2 = sqrt2-1

eg
sqrt[ (-2) ² ] = sqrt (4) = 2

MelodyNov 18, 2013

+30

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Melody:
http://www.stargazing.net/david/constel/magnitude.html

I think the web page says 1/15

But I will admit to knowing nothing about this stuff.

Thanks Melody its ok I can take care of it you have done a lot for me already.

piconjoNov 18, 2013

+118742

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How does this work (sqrt(2)-sqrt(8))^2 ?? plz expalain. why doesnt it become -6 or 6 and why is the answear 3??? ty for the answear in before hand

sqr8 = sqrt(4*2) = sqrt4 * sqrt2 = 2sqrt2

sqrt2 - 2sqrt2 = -sqrt2

(-sqrt2) ² = (-sqrt2)*(-sqrt2) = +2

MelodyNov 18, 2013

+118742

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Do you want more help for this question?
I actually did post a detailed answer but I think it came in at exactly the same time as the other reply and mine vanished.
I was a bit annoyed and I just posted the final answer.
If you need me to help more I can.
Let me see what you have done first though.

MelodyNov 18, 2013

+118742

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ok, Have fun, lol

MelodyNov 18, 2013

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[size=200] [center][/center][/size]:lol: really?

GuestNov 18, 2013

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1km= 1000m
=10000dm
=100000cm
=1000000mm

GuestNov 18, 2013

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Sry not 3 its 2

GuestNov 18, 2013

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Melody:
Pi is an irrational number. It can not be expressed exactly as a fraction or as a decimal - not even a recurring decimal.

uh so? maybe so but its still fun to memorize it as much as possible

GuestNov 18, 2013

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I agree with what they said. You first need to set up an equation with what you already have then once you have that then slide your X to one side of the equation and simply divide . Therefore giving you the answer already^ it set's out to be exactly 30 ounces. Or maybe you could get something else, but that's what I got and the other person too.

Translated using Bing Translator (Spanish to English)

GuestNov 18, 2013

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Guest:
Mailboxes Plus sends packages overnight for $5 plus $0.25 per ounce. United Packages charges $2 plus $0.35 per ounce. Mr. Molinari noticed that his package would cost the same to mail using either service. How much does his package weigh?

The answer is 30 ounces. set up an equation with both mail services equal to each other, then move x's to one side, then divide.

GuestNov 18, 2013

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