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Alan3354 answered: 30973 problems
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Sequences-and-series/675337: find the next term of the sequence {1,4,11,26,57,120,...}?
1 solutions

Answer 419760 by Alan3354(30993) About Me  on 2012-11-03 10:03:40 (Show Source):
You can put this solution on YOUR website!
find the next term of the sequence {1,4,11,26,57,120,...}?
----------
Term n = term n-1 + 2^n - 1
247


Travel_Word_Problems/675293: If your traveling 30 miles per hour, how far would you travel in 18 minutes? What formula would you use to solve these types of equations.
1 solutions

Answer 419759 by Alan3354(30993) About Me  on 2012-11-03 09:57:28 (Show Source):
You can put this solution on YOUR website!
If your [sic] traveling 30 miles per hour, how far would you travel in 18 minutes? What formula would you use to solve these types of equations.
--------------
18 mins = 0.3 hours
d = r*t


Expressions-with-variables/675235: 10^7X(2X10^2)^4
1 solutions

Answer 419695 by Alan3354(30993) About Me  on 2012-11-02 22:14:57 (Show Source):
You can put this solution on YOUR website!
10^7X(2X10^2)^4
-------------
Is X a variable? or does it mean multiply?


Travel_Word_Problems/675186: You are riding your bike to prepare for a race. It takes you 12 min to go 2.5 mi. If you continue traveling at the same rate, how long will it take you to go 7 mi?

1 solutions

Answer 419645 by Alan3354(30993) About Me  on 2012-11-02 18:08:42 (Show Source):
You can put this solution on YOUR website!
You are riding your bike to prepare for a race. It takes you 12 min to go 2.5 mi. If you continue traveling at the same rate, how long will it take you to go 7 mi?
--------------------
12/2.5 = t/7
2.5t = 84
t = 33.6 minutes


Trigonometry-basics/675197: If sin(a + b) = 1 and tan(a) = 0, then tan(b) is
(a) undefined
(b) 1
(c) 0
(d) 1/4
(e) 1/2

1 solutions

Answer 419644 by Alan3354(30993) About Me  on 2012-11-02 18:06:51 (Show Source):
You can put this solution on YOUR website!
If sin(a + b) = 1 and tan(a) = 0, then tan(b) is
------------
tan(a) = 0 --> a = 0, pi --> sin(a) = 0 --> a = 0
b = pi/2
tan(pi/2) = undefined


Polynomials-and-rational-expressions/675150: 8y^2+14y+3
and i am factoring using grouping method .. is my answer 6y(4y+1)^2
1 solutions

Answer 419592 by Alan3354(30993) About Me  on 2012-11-02 13:01:08 (Show Source):
You can put this solution on YOUR website!
8y^2+14y+3
and i am factoring using grouping method .. is my answer 6y(4y+1)^2
----------------
6y%284y%2B1%29%5E2+=+96y%5E3+%2B+48y%5E2+%2B+6y
------------
8y^2+14y+3
= (2y + 3)*(4y + 1)


Travel_Word_Problems/674979: You can run 1:5 mile in two minutes. How long will it take u to run 2 miles?
1 solutions

Answer 419501 by Alan3354(30993) About Me  on 2012-11-01 22:05:55 (Show Source):
You can put this solution on YOUR website!
You can run 1:5 mile in two minutes. How long will it take u to run 2 miles?
------------
What is 1:5 mile?


Linear_Algebra/674992: f(X)=2/x^2-2x-3, what is the Y-intercept?
1 solutions

Answer 419500 by Alan3354(30993) About Me  on 2012-11-01 22:04:59 (Show Source):
You can put this solution on YOUR website!
f(X)=2/x^2-2x-3, what is the Y-intercept?
---------------
What is the denominator?


Proportions/674946: How fast was a car traveling if it left a 140 ft long skid mark when it was forced to stop quickly.
1 solutions

Answer 419480 by Alan3354(30993) About Me  on 2012-11-01 20:54:29 (Show Source):
You can put this solution on YOUR website!
How fast was a car traveling if it left a 140 ft long skid mark when it was forced to stop quickly.
-----------
Not enough info


Polynomials-and-rational-expressions/674950: I really need help with this problem
x^2/x-72=?
is the trinomial prime?

1 solutions

Answer 419479 by Alan3354(30993) About Me  on 2012-11-01 20:53:43 (Show Source):
You can put this solution on YOUR website!
I really need help with this problem
x^2/x-72=?
is the trinomial prime?
------------------
What trinomial?


Quadratic_Equations/674951: I really need some assistants with this equation.
(4x/9)(7x^2/8x/4
1 solutions

Answer 419478 by Alan3354(30993) About Me  on 2012-11-01 20:52:53 (Show Source):
You can put this solution on YOUR website!
I really need some assistants [sic] with this equation.
(4x/9)(7x^2/8x/4
-----------
It's not an equation.
I can tell, there's no equal sign.
The parentheses don't match, needs clarification.


test/674943: Hello what does 3/8 equal to. I was thinking 3.375 can you please send me the work out of how you get that answer. Thanks!
1 solutions

Answer 419474 by Alan3354(30993) About Me  on 2012-11-01 20:43:27 (Show Source):
You can put this solution on YOUR website!
Hello what does 3/8 equal to. I was thinking 3.375 can you please send me the work out of how you get that answer.
----------
3/8 = 0.375
-------------
3/8 = (3/2)/2/2
Or, = 3*0.5*0.5*0.5
---------
Working it out is similar to working out 2 times 2.


Linear-systems/674914: -4x+y=6
-5x-y=21
1 solutions

Answer 419473 by Alan3354(30993) About Me  on 2012-11-01 20:42:03 (Show Source):
You can put this solution on YOUR website!
-4x+y=6
-5x-y=21
---------- Add


Angles/674940: if measurement of angle 5= 2x+15 and the measurement of angle 7= 5x-48 find the measurement of angle 5
1 solutions

Answer 419472 by Alan3354(30993) About Me  on 2012-11-01 20:41:19 (Show Source):
You can put this solution on YOUR website!
if measurement of angle 5= 2x+15 and the measurement of angle 7= 5x-48 find the measurement of angle 5
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Not enough info.
Are these angles related? In the same polygon?


Quadratic-relations-and-conic-sections/674934: Graph the ellipse.
16(x - 1)^2 + 9(y + 2)^2 = 144
1 solutions

Answer 419471 by Alan3354(30993) About Me  on 2012-11-01 20:38:10 (Show Source):
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Graph the ellipse.
16(x - 1)^2 + 9(y + 2)^2 = 144
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Solve for x or y.
Then pick values for one, and find the other variable.
Plot the points, draw the curve thru them.
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logarithm/674936: how do you write 3ln(e^2 -e)-3 as a single logarithm?
1 solutions

Answer 419470 by Alan3354(30993) About Me  on 2012-11-01 20:36:38 (Show Source):
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how do you write 3ln(e^2 -e)-3 as a single logarithm?
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3ln(e^2 -e)-3 is a single logarithm.
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ln(2) + ln(3), for example, is not.


Linear-systems/674916: 4x+8y=20
-4x+2y=-30
1 solutions

Answer 419462 by Alan3354(30993) About Me  on 2012-11-01 20:22:20 (Show Source):
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4x +8y =20
-4x+2y=-30
------------- Add


test/674756: 17xy^3x^2yx^4
^= power
1 solutions

Answer 419414 by Alan3354(30993) About Me  on 2012-11-01 16:58:16 (Show Source):
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17xy^3x^2yx^4
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What's your question?


Polynomials-and-rational-expressions/674727: How do you do 16b squared minus 40b plus 25?
1 solutions

Answer 419408 by Alan3354(30993) About Me  on 2012-11-01 16:44:45 (Show Source):
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How do you do 16b squared minus 40b plus 25?
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It depends on what you mean by "do."


Roman-numerals/668200: will a girl sk me
1 solutions

Answer 419330 by Alan3354(30993) About Me  on 2012-11-01 08:50:15 (Show Source):
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You don't need to post math problems for help, your future is in comedy.
That was hilarious.


Rectangles/674557: The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?
1 solutions

Answer 419329 by Alan3354(30993) About Me  on 2012-11-01 08:44:28 (Show Source):
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The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?
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v = a*t where a is gravitational acceleration ~ 32 ft/sec/sec
s = at^2/2 (s = distance in ft)
t+=+sqrt%282s%2Fa%29
v+=+at+=+32sqrt%282s%2F32%29
v+=+32%2Asqrt%28121%2F16%29+=+32%2A11%2F4
v = 88 ft/sec


Travel_Word_Problems/674565: if a whale is travelling at 55 kilometres an hour how far has he travelled in six hours
1 solutions

Answer 419326 by Alan3354(30993) About Me  on 2012-11-01 08:30:02 (Show Source):
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if a whale is travelling at 55 kilometres an hour how far has he travelled in six hours
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d = r*t


test/674567: NeeD a tutor to help me with college algebra 1
1 solutions

Answer 419325 by Alan3354(30993) About Me  on 2012-11-01 08:28:33 (Show Source):
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NeeD a tutor to help me with college algebra 1
===============
What do you have in mind?
Some of the tutors express an interest in income, look at the list.


Quadratic-relations-and-conic-sections/674512: find the center and radius of x^+y^2-8x2y+8=0
1 solutions

Answer 419281 by Alan3354(30993) About Me  on 2012-10-31 22:53:22 (Show Source):
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find the center and radius of x^+y^2-8x2y+8=0
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What is x^ ? and 8x2y ?


test/674472: simplify by rationalizing the denominatior 5√(2)/(2-1)
1 solutions

Answer 419279 by Alan3354(30993) About Me  on 2012-10-31 22:31:37 (Show Source):
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simplify by rationalizing the denominatior 5√(2)/(2-1)
=========
= 5%2Asqrt%282%29
=~ 7.0711


Equations/674448: i need help solving an equation with fractions in it. I have worked it out but i want to be sure my answer is correct.
Original problem 3-2/5x=6
i did -2/5x=6-3
-2/5x=3
x=3/1(divided)-5/2
x=3/1*-5/2=-15/2
1 solutions

Answer 419277 by Alan3354(30993) About Me  on 2012-10-31 22:29:11 (Show Source):
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Original problem 3-2/5x=6
i did -2/5x=6-3
-2/5x=3
x=3/1(divided)-5/2
x=3/1*-5/2=-15/2
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It's correct, but I would eliminate fractions first.
3 - (2/5)x = 6
Times 5:
15 - 2x = 30
-2x = 15
x = -15/2


Numeric_Fractions/674321: how do you get an answer to a problem that is 7 7/32 - 2 18/32
1 solutions

Answer 419156 by Alan3354(30993) About Me  on 2012-10-31 14:15:02 (Show Source):
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how do you get an answer to a problem that is 7 7/32 - 2 18/32
231/32 - 82/32 = 149/32


�t�e�s�t/674227: Find the equation of the line with the given properties. Express.the equation in general form or slope intercept form
perpendicular to the line -3x+y=-21 containing points (6,-4)
1 solutions

Answer 419128 by Alan3354(30993) About Me  on 2012-10-31 12:30:56 (Show Source):
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Find the equation of the line with the given properties. Express.the equation in general form or slope intercept form
perpendicular to the line -3x+y=-21 containing points (6,-4)
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-3x+y=-21
y = 3x - 21
Slope = 3
The slope of lines perpendicular is the negative inverse, = -1/3
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Use y = mx + b and the point to find b, the y-intercept
-4 = (-1/3)*6 + b
b = -2
--> y = (-1/3)x - 2
Or y = -x/3 - 2 (better format)
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x + 3y = -6 (standard format)


Systems-of-equations/674282: 5u+3v=-16
2u+v=-5
use method of elimination to solve the system of equations
1 solutions

Answer 419122 by Alan3354(30993) About Me  on 2012-10-31 12:21:32 (Show Source):
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5u+3v=-16
2u+v=-5
use method of elimination to solve the system of equations
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Multiply the 2nd eqn by 3, then subtract.


Complex_Numbers/674250: 64x^(2)-16x+3
1 solutions

Answer 419114 by Alan3354(30993) About Me  on 2012-10-31 11:21:55 (Show Source):
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64x^(2)-16x+3
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What about it?


percentage/674238: what's 40% off 156 dollars
1 solutions

Answer 419113 by Alan3354(30993) About Me  on 2012-10-31 11:18:05 (Show Source):
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what's 40% off 156 dollars
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What do you mean by off?
That's not a math operation.