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Money_Word_Problems/709524: how much money must be deposited now in an account paying 8% annual interest, compounded quarterly, to have a balance of $1000 after 10 years
1 solutions

Answer 436630 by Alan3354(30965) About Me  on 2013-02-02 17:04:48 (Show Source):
You can put this solution on YOUR website!
how much money must be deposited now in an account paying 8% annual interest, compounded quarterly, to have a balance of $1000 after 10 years
-----------------
8% annual = 2% per quarter
10 yrs = 40 1/4's
--------------
FV = PV*1.02^n
1000 = PV*1.02^40
PV = 1000/(1.02^40)
PV =~ $452.89


Square-cubic-other-roots/709518: x/16=400/20
1 solutions

Answer 436624 by Alan3354(30965) About Me  on 2013-02-02 16:52:22 (Show Source):
You can put this solution on YOUR website!
x/16=400/20
----------
Do you have a question?


Complex_Numbers/709511: x^3-125

1 solutions

Answer 436623 by Alan3354(30965) About Me  on 2013-02-02 16:50:48 (Show Source):
You can put this solution on YOUR website!
x^3-125
----------
What about it?


Expressions-with-variables/709521: How am I suppose to answer this
x=12y-14
3y+2x=26
This is using substitution or elimination
1 solutions

Answer 436621 by Alan3354(30965) About Me  on 2013-02-02 16:48:38 (Show Source):
You can put this solution on YOUR website!
How am I suppose to answer this
You're not supposed to answer it, it's not a question.
---------
The reference to substitution or elimination implies that you're expected to solve the system for x & y.
--------
You should say that - "How do I solve the system for x & y?"
Knowing what you want to do and expressing it is a big step toward doing it.
================================

x=12y-14
3y+2x=26
----------

x -12y = -14
2x +3y = 26
-- ---------
Multiply the 1st eqn by 2, then subtract.
2x -24y = -28
2x + 3y = 26
--------------- Subtract
-27y = -54
y = 2
=========
Sub for y in any equation and solve for x


Age_Word_Problems/709436: pete is 14 years old and his mother is 39 in how many years will petes mother be exactly twice as old as pete
1 solutions

Answer 436575 by Alan3354(30965) About Me  on 2013-02-02 09:52:18 (Show Source):
You can put this solution on YOUR website!
pete is 14 years old and his mother is 39 in how many years will petes mother be exactly twice as old as pete
---------------------
The age difference is 25 yrs
--> when he's 25


percentage/709363: how do you divide 2340 into 28500
1 solutions

Answer 436568 by Alan3354(30965) About Me  on 2013-02-02 08:42:52 (Show Source):
You can put this solution on YOUR website!
how do you divide 2340 into 28500
-----------
With a calculator, or pencil and paper.


Trigonometry-basics/709425: Sin(x)=29/4 what is x?

1 solutions

Answer 436567 by Alan3354(30965) About Me  on 2013-02-02 08:39:59 (Show Source):
You can put this solution on YOUR website!
Sin(x)=29/4 what is x?
------------------
There's no real number solution for x.
-1 <= sin(x) <= 1


Numeric_Fractions/709398: (7t-3)=2(t=1)+4
1 solutions

Answer 436564 by Alan3354(30965) About Me  on 2013-02-02 07:59:14 (Show Source):
You can put this solution on YOUR website!
(7t-3)=2(t=1)+4
-----------------
Too many equal signs.


Volume/709383: Does someone want to tackle this problem? I've tryed the volume formula, just dont know what to do with it.
The volume of earth is 6.7 times that of mars, find the diameter of mars.
Thankyou sincerely in advance.
1 solutions

Answer 436544 by Alan3354(30965) About Me  on 2013-02-01 23:46:48 (Show Source):
You can put this solution on YOUR website!
The volume of earth is 6.7 times that of mars, find the diameter of mars.
------------------
Volume is a function of the cube of the diameter.
eg, dia*2 --> volume*2^3 = volume*8
=============
You didn't give Earth's diameter, I'll use 8000 miles.
---
Mars' diameter = 8000%2Froot%283%2C6.7%29
=~ 4244 miles


Graphs/709353: Can you please solve this algebra problem? and show me the detail for it:
2x+4 = 8y
1 solutions

Answer 436535 by Alan3354(30965) About Me  on 2013-02-01 20:49:09 (Show Source):
You can put this solution on YOUR website!
Can you please solve this algebra problem? and show me the detail for it:
2x+4 = 8y
------------
Solve for what?


Triangles/709344: In triangle ABC, triangle C is a right angle. Find the remaining sides and angles. Round your answer to the nearest tenth. a=3, c=19
1 solutions

Answer 436522 by Alan3354(30965) About Me  on 2013-02-01 20:01:22 (Show Source):
You can put this solution on YOUR website!
In triangle ABC, triangle C is a right angle. Find the remaining sides and angles. Round your answer to the nearest tenth. a=3, c=19
-------------
b+=+sqrt%28c%5E2+-+a%5E2%29+=+sqrt%28352%29
b =~ 18.8
=============
sin(A) = 3/19
------------
B = 90 - A


Travel_Word_Problems/709250: distance a plane can travel in 30 seconds
1 solutions

Answer 436511 by Alan3354(30965) About Me  on 2013-02-01 17:43:16 (Show Source):
You can put this solution on YOUR website!
distance a plane can travel in 30 seconds
--------------
Depends on its speed.
If it's parked, distance = 0


�t�e�s�t/709300: Solve
a) x^3-x^2-4x+4=0
b) x^3-4x^2+x+6=0
c) x^3-x^2-3x+6=0
d) x^4-3x^3-2x^2+12x-8=0
Can you please help me? Thanks so much in advance:)
1 solutions

Answer 436510 by Alan3354(30965) About Me  on 2013-02-01 17:41:08 (Show Source):


Reduction-of-unit-multipliers/709316: what is the distance of 2/10 kilometers

1 solutions

Answer 436509 by Alan3354(30965) About Me  on 2013-02-01 17:39:26 (Show Source):
You can put this solution on YOUR website!
what is the distance of 2/10 kilometers
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?
That is the distance.
Two tenths of kilometer.
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What is the distance of 2 feet?
It's 2 feet.



�t�e�s�t/709299: Solve
a) x^3-x^2-4x+4=0
b) x^3-4x^2+x+6=0
c) x^3-x^2-3x+6=0
d) x^4-3x^3-2x^2+12x-8=0
Can you please help me with a detailed explanation and show me how to do it? Thanks so much in advance
1 solutions

Answer 436508 by Alan3354(30965) About Me  on 2013-02-01 17:38:35 (Show Source):
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Solve
a) x^3-x^2-4x+4=0
b) x^3-4x^2+x+6=0
c) x^3-x^2-3x+6=0
d) x^4-3x^3-2x^2+12x-8=0
Can you please help me with a detailed explanation and show me how to do it?
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a) x^3-x^2-4x+4=0
Try the factors of 4, plus and minus.
1, 2 & 4
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Sub 1 for x:
1 - 1 - 4 + 4 = 0
+ 1 is a zero --> (x-1) is a factor.
Divide by x-1, then factor what's left, if possible.


Equations/709307: How do i write a equation for this word problem .....a total of 25boys and girls want to join club
1 solutions

Answer 436507 by Alan3354(30965) About Me  on 2013-02-01 17:34:08 (Show Source):
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How do i write a equation for this word problem .....a total of 25boys and girls want to join club
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How is that a problem?
What are you trying to find?


Miscellaneous_Word_Problems/709267: A student gains 1.4 in two weeks. How many grams did he gain?
1 solutions

Answer 436493 by Alan3354(30965) About Me  on 2013-02-01 16:21:14 (Show Source):
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A student gains 1.4 in two weeks. How many grams did he gain?
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1.4 what?


Triangles/709236: what is the missing formula for each of the right triangles below.
In each example 0= angle, O= opposite side, A=adjacent side, and H=hypotenuse.
sin=0=? O=8 H=16
1 solutions

Answer 436460 by Alan3354(30965) About Me  on 2013-02-01 10:44:59 (Show Source):
You can put this solution on YOUR website!
what is the missing formula for each of the right triangles below.
In each example 0= angle, O= opposite side, A=adjacent side, and H=hypotenuse.
sin=0=? O=8 H=16
===================
sine = side opposite/hypotenuse


Geometry_Word_Problems/709076: show that the quadriateral with the give vertics is a parallelogram

1 solutions

Answer 436380 by Alan3354(30965) About Me  on 2013-01-31 21:55:50 (Show Source):
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show that the quadriateral with the give vertics is a parallelogram
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No data.


Triangles/709096: P=12 , A=3 , C=5 what is B?
1 solutions

Answer 436373 by Alan3354(30965) About Me  on 2013-01-31 21:41:26 (Show Source):
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P=12 , A=3 , C=5 what is B?
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No idea.
Is this a triangle, or something else?
What does P mean?


Linear-systems/709077: X-y=3
X+y=5
1 solutions

Answer 436372 by Alan3354(30965) About Me  on 2013-01-31 21:40:23 (Show Source):
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X-y=3
X+y=5
--------- Add


test/708998: What is the width of a regulation basketball courts? I 94ft. A400ft
1 solutions

Answer 436349 by Alan3354(30965) About Me  on 2013-01-31 18:30:36 (Show Source):
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What is the width of a regulation basketball courts? I 94ft. A400ft
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I don't know.
It's not a math problem, no way to figure it out.
Look it up.


�t�e�s�t/708994: what is the answer for 1/3 + 1/9?

1 solutions

Answer 436348 by Alan3354(30965) About Me  on 2013-01-31 18:29:29 (Show Source):
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what is the answer for 1/3 + 1/9?
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Depends on the question.
-----------
If you want the sum of the 2 fractions:
1/3 + 1/9 = 3/9 + 1/9
= 4/9


Graphs/708918: I want to fuck u
1 solutions

Answer 436346 by Alan3354(30965) About Me  on 2013-01-31 18:23:50 (Show Source):
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I want to fuck u
----------------
Sorry. "You can't always get what you want..." - Rolling Stones
===========
Ok, seriously, with a comedic wit like yours, your future is assured.
It's hard for me to comprehend how you can be so clever.


test/709001: Y=3x
1 solutions

Answer 436345 by Alan3354(30965) About Me  on 2013-01-31 18:22:13 (Show Source):
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Y=3x
--------
Thx for letting us know.


Polygons/708508: The sum of the measures of the exterior angles of a 30-gon is ___
360/n
12
1 solutions

Answer 436153 by Alan3354(30965) About Me  on 2013-01-30 20:27:59 (Show Source):
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The sum of the measures of the exterior angles of a 30-gon is 360 degs.
That's true for all polygons.


Numeric_Fractions/708569: what is 2(9n-1)=7(n+6)=-60
1 solutions

Answer 436151 by Alan3354(30965) About Me  on 2013-01-30 20:26:23 (Show Source):
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what is 2(9n-1)=7(n+6)=-60
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I'm not sure.
It would be an equation, but is has an extra equal sign.


logarithm/708538: Please help with equation 32^x-2 = 8^x
I know this is Log base 32 8^x = x-2, but now I'm stuck
Thank you
1 solutions

Answer 436148 by Alan3354(30965) About Me  on 2013-01-30 20:25:01 (Show Source):
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32^x-2 = 8^x
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(x-2)*log(32) = x*log(8)
That's the hard way.
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32^x-2 = 8^x
2%5E%285%28x-2%29%29+=+2%5E%283x%29
5(x-2) = 3x
etc


Numeric_Fractions/708562:
1 solutions

Answer 436146 by Alan3354(30965) About Me  on 2013-01-30 20:22:24 (Show Source):
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5-2/3= 15/3 - 2/3
= 13/3


Linear_Equations_And_Systems_Word_Problems/708575: PLEASE HELP solve the system linear equations. Solve for variables x and y:
4x-3y=4
2x+y=-8
Please show me how to do this problem.
1 solutions

Answer 436145 by Alan3354(30965) About Me  on 2013-01-30 20:21:18 (Show Source):
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4x-3y=4
2x+y=-8
Please show me how to do this problem.
=================
Multiply the 2nd equation by 2, then subtract.
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Or, multiply it by 3, then add.


Quadratic_Equations/708577: Please help me solve this equation: 4x^9+6x^4
1 solutions

Answer 436144 by Alan3354(30965) About Me  on 2013-01-30 20:19:54 (Show Source):
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Please help me solve this equation: 4x^9+6x^4
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That's not an equation.
There's no equal sign.
--> nothing to solve