All Answers 358549 Answers

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You're funny !

Translated using Bing Translator (Spanish to English)

GuestNov 18, 2013

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have a sense of humor!

GuestNov 18, 2013

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What angle has a tangent of 0.1623376

Tan-1 0.1623376 = 9.220820561°

correct me if i'm wrong.

GuestNov 18, 2013

+2

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Someone always help make seriously posts I'd condition. thanks for the sharing good work well done....

sloon123Nov 18, 2013

+118733

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how much would you have in the bank if you invested £2000 at an interest rate of 4% p.a, for three years?

If it is compounded yearly it will be

2000*1.04 ³ pounds

If it is compounded more often it will be a bit more.

MelodyNov 18, 2013

+118733

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MelodyNov 18, 2013

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GuestNov 18, 2013

+118733

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Do you know hae many fluid ounces in a quart? I don't, we stop using imperial units in Australia in 1974.
I could google it an find out, but you could do that yourself.

MelodyNov 18, 2013

+118733

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log is base 10
ln is base e
Your calculator doesn't use any other bases.
You may need to use change of base law
Wikipeadia has a nice list of log laws that i still often refer to.

MelodyNov 18, 2013

+118733

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simplify 7a/15b^2 + b/18ab

This is the question that you have asked, is it what you intended?

simplify [ (7a/15)*b^2] + (b/18) *ab

or did you really mean

simplify 7a/(15b^2) + b/(18ab)

or maybe you meant something else ??

MelodyNov 18, 2013

+118733

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sorry, this isn't correct.
Try to google it to find the correct answer
Also, it is the surface area of a sphere that you want.

MelodyNov 18, 2013

+118733

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Try working your way through a log unit
maybe
http://www.mathsisfun.com/algebra/logarithms.html

MelodyNov 18, 2013

+118733

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How much mixture do you want to make up altogether?

MelodyNov 18, 2013

+118733

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log(x) - (1/2)log(x+4) = 1

log(x) - log(x+4) ^1/2 = 1

log[x/(x+4) ^1/2] = 1

Now I need to know what base it is in. I will assume base 10
x/(x+4) ^1/2 = 10
etc
This will lead to a quadratic equation that you will have to solve.

You should work through a unit on logs maybe
http://www.mathsisfun.com/algebra/logarithms.html

MelodyNov 18, 2013

+118733

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((e^(100x)*(100sin(120pi*x)-120pi*cos(120pi*x))/(14400pi^2+10000))/e^(100x=Q What is Q?
I re-presented the question as follows - is this what the question was?

[ (e^(100x)*(100sin(120pi*x)-120pi*cos(120pi*x))/(14400pi^2+10000) ] /e^(100x)=Q What is Q?

Q = [ (e^(100x)*(100sin(120pi*x)-120pi*cos(120pi*x))/(14400pi^2+10000) ] /e^(100x)

Q = 100sin(x)- 120pi*cos(x)/(14400pi^2+10000)

Q = 1000[0.1sin(x)- [0.120pi/(14400pi^2+10000)]*cos(x)]
--------------------------------
Now using Sin(x-A)=sinx * cosA - sinA * cosx
let
cosA=0.1
sinA= 0.12pi/(14400pi^2+10000)
tanA=0.12pi/(14400pi^2+10000)/0.1 = 1.2pi/(14400pi^2+10000)
A = 2.47821*10^(-5) (to 6 sf)
-----------------------------------
Q = 1000*sin[ x - atan(1.2pi/(14400pi^2+10000))] exact if I didn't make a mistake
Q = 1000*sin[ x - 2.47821*10^(-5)] (this answer is not exact)

I think that's right but I could easily have made a mistake.

MelodyNov 18, 2013

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wat is 1.125 in a fraction?

GuestNov 18, 2013

Nov 17, 2013

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52,137 ml is 52,137/1000 liters, in other words 0,052137 litres

GuestNov 17, 2013

+6

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if 3t-7=5t , then 6t=?

5t-3t = -7 ,, 2t =- 7

>> t = -7/2
>>6t = 6*(-7/2)
>>6t = -21

polatgkhanNov 17, 2013

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GuestNov 17, 2013

+2

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It depends on how your teacher told you to solve it. Basically what you're asking yourself is this:

48000 is x% of 132500

call is the same as the equals sign and of the same as multiplication and you have

48000 = x(132500)

Than all you have to do is to solve the equation.

If your teacher told you to use ratios you'd need to set it up differently.

fnightNov 17, 2013

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GuestNov 17, 2013

+118733

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11/50 * 870 Litres

It is actually
11Litres/50Km * 870km but the km cancel out. (You can cancel units just the same as you can cancel numbers)

MelodyNov 17, 2013

+118733

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(1-sqrt(2))^2-1/(sqrt(2-1

Do you mean

(1-sqrt(2))^2- {1/(sqrt(2)} -1 ??

MelodyNov 17, 2013

+118733

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MelodyNov 17, 2013

+118733

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Draw the diagram
use pythagoras to ger the third side
Read the ratios off the diagram.

remmeber the word
soh cah toa
sin=o/h
cos=a/h
tan/o/a

or if you prefer, you can remember
Some old hags
Can't always hide
their old age

co t=1 / tan
co sec=1 / sin
se c=1 / cos

I am trying to show you that the
first letter of original ratio = third letter of new one.

MelodyNov 17, 2013

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