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tkhunny
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tkhunny
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04-12-2005
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08:48 PM
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05-25-2018,
11:57 AM
tkhunny
replied to a thread
Formula for angle in Polygon
in
Geometry and Trig
In my opinion, this is one of the most useless formulas ever. The sum of the EXTERNAL angles of polygon. is always 360º. For a Regular n-gon each...
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12 replies | 172 view(s)
05-25-2018,
11:52 AM
tkhunny
replied to a thread
At what point is more correct to pool data together?
in
Probability / Statistics
This depends on your pooling. If you have assumed the three samples have equal variance, you had better prove that before you throw them all...
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1 replies | 52 view(s)
05-25-2018,
09:03 AM
tkhunny
replied to a thread
Is zero a positive integer?
in
Beginning Algebra
There are programming languages that make various assumptions. Some tell you that 0/0 = 1 if it encountered in a program sequence. This is just an...
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4 replies | 92 view(s)
05-24-2018,
10:44 PM
tkhunny
replied to a thread
Simplification Clarification
in
Arithmetic
It may help to write everything in fractional form. .5 = 1/2 .6 = 3/5 .4 = 2/5 .3 = 3/10
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4 replies | 116 view(s)
05-24-2018,
01:54 PM
tkhunny
replied to a thread
Calculating Averages
in
Arithmetic
Word of warning. An average of averages is unlikely to be what you want.
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6 replies | 155 view(s)
05-24-2018,
01:52 PM
tkhunny
replied to a thread
What is the direction angle of the resultant <34,-21>
in
Calculus
Please plot this point on a set of coordinate axes. Which direction must you face in order to walk directly to the given point? Normally, an...
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1 replies | 44 view(s)
05-23-2018,
11:30 PM
tkhunny
replied to a thread
newbie DE question: "y'' + y = o is important because it appears in physics." How?
in
Calculus
Well, the differential equation itself tells you something about the nature of the function. Simply stating the equation, y" + y = 0 might mean...
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9 replies | 228 view(s)
05-23-2018,
07:58 PM
tkhunny
replied to a thread
newbie DE question: "y'' + y = o is important because it appears in physics." How?
in
Calculus
1) "plug in" doesn't mean anything. 2) This is the beauty of Differential Equations. You do not need to know the nature of the function to have a...
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9 replies | 228 view(s)
05-23-2018,
07:55 PM
tkhunny
replied to a thread
Final Review: Of 100 stadium workers, 42 work in concession stands, 88 wear name tags
in
Probability / Statistics
Perhaps just draw a box / grid. 1) Label the columns Concession / Other / Total 2) Label the rows Name Tags / Other / Total 3) Supply all the...
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5 replies | 139 view(s)
05-22-2018,
08:57 PM
tkhunny
replied to a thread
Probability: Danielle, Lilliana, Melody play fighting video game in tournament mode
in
Probability / Statistics
No, no. I didn't switch to the right problem. :-)
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6 replies | 192 view(s)
05-22-2018,
12:32 PM
tkhunny
replied to a thread
Probability: Danielle, Lilliana, Melody play fighting video game in tournament mode
in
Probability / Statistics
Also an excellent lesson in paying attention. It only looked like 2/5 because someone tapped me on the shoulder and told me I was late for a...
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6 replies | 192 view(s)
05-22-2018,
10:57 AM
tkhunny
replied to a thread
Probability: Danielle, Lilliana, Melody play fighting video game in tournament mode
in
Probability / Statistics
One must also get to the match. First, the Probability that there is a winner. Round 1 0 Round 2 1/2 Round 3 1/4 Round 4 1/8 ... Round n...
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6 replies | 192 view(s)
05-21-2018,
08:46 PM
tkhunny
replied to a thread
Geometric sequences: How can i proove that (a_(n+1))^2 = a_n *a_(n+2) is a geom. seq?
in
Intermediate/Advanced Algebra
Please state, for us, the DEFINITION of a Geometric Sequence.
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2 replies | 133 view(s)
05-21-2018,
08:44 PM
tkhunny
replied to a thread
If cosθ=725 and θ is between 0 and π2, what is the value of sinθ?
in
Geometry and Trig
1) This is a moderated forum. Your first few posts won't appear until they have been approved by a moderator. 2) You should have learned ...
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3 replies | 83 view(s)
05-21-2018,
03:23 PM
tkhunny
replied to a thread
Equation of tangent line to (6-2x)^1/2 at x=1
in
Calculus
...except that "(6-2x)^1/2" doesn't mean anything. Is that supposed to be a function definition or just an expression floating in space?
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5 replies | 146 view(s)
05-21-2018,
07:34 AM
tkhunny
replied to a thread
confusion over how √2√3 / 4 - √2 / 4 simplifies to √2(√3 - 1) / 4 (1st post here!)
in
Intermediate/Advanced Algebra
This principle is used twice: ab + ac = a(b+c) or this bd + cd = (b+c)d In each case, it is the Distributive Property of Multiplication over...
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3 replies | 101 view(s)
05-21-2018,
07:32 AM
tkhunny
replied to a thread
Please help me solve this integral
in
Calculus
Of course it did. WHAT other integral?
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8 replies | 158 view(s)
05-21-2018,
07:30 AM
tkhunny
replied to a thread
Installment loan APR: $260.00 loan w/ $100.00 finance charge; $60/mo paid for 6 mo's
in
Finance/Business Math
This is not a great question. We are not told if it is a Simple Interest loan, or otherwise. Monthly Compounding gives 219.80%. For Simple...
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2 replies | 135 view(s)
05-20-2018,
05:41 PM
tkhunny
replied to a thread
solve eqn w/ variable in exponent using logarithms: 10*2^x - 8*5^(x-2) = 0
in
Intermediate/Advanced Algebra
None taken. :-)
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11 replies | 339 view(s)
05-19-2018,
05:55 PM
tkhunny
replied to a thread
solve eqn w/ variable in exponent using logarithms: 10*2^x - 8*5^(x-2) = 0
in
Intermediate/Advanced Algebra
Kind of an offensive question. Yes, there is. Factor everything. Prime factorization. 10 = 2*5 Collect all the like factors and look at it...
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11 replies | 339 view(s)
05-18-2018,
03:21 PM
tkhunny
replied to a thread
Payout Annuity Problem: Jim won jackpot of $15 million
in
Finance/Business Math
This my or may not be an appropriate determination. Without quite a bit of classroom discussion, that you didn't share with us, "Guessed Right" might...
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11 replies | 449 view(s)
05-18-2018,
10:47 AM
tkhunny
replied to a thread
help with complex numbers: Solve z^3 + 3i z-bar = 0
in
Intermediate/Advanced Algebra
What have you tried? If nothing else pops out, at least recall that z = a+bi.
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6 replies | 213 view(s)
05-18-2018,
10:10 AM
tkhunny
replied to a thread
Exponential equation: Solve 5^(1/x) < 1/25
in
Intermediate/Advanced Algebra
Think about BASES. \dfrac{1}{25} = 5^{What}
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1 replies | 83 view(s)
05-17-2018,
02:32 PM
tkhunny
replied to a thread
Please help me solve this integral
in
Calculus
What were the results of your Integration by Parts?
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8 replies | 158 view(s)
05-15-2018,
08:27 PM
tkhunny
replied to a thread
Converting XYZ Coordinates to LRA (Length Rotation Angle) Values
in
Geometry and Trig
Turtle Graphics!!! Seriously, you are a turtle. You are walking along the pipe. Your eyes look only straight forward. Extend the line of vision...
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3 replies | 157 view(s)
05-15-2018,
08:18 PM
tkhunny
replied to a thread
Payout Annuity Problem: Jim won jackpot of $15 million
in
Finance/Business Math
You have not adequately defined the problem. 1) What are "take-home winnings"? Isn't it just $11¼ million? 2) How do you define "total worth"?...
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11 replies | 449 view(s)
05-15-2018,
06:18 AM
tkhunny
replied to a thread
how to set this up? 3mph walking away; 6mph running back; 30 min total time; find d
in
Intermediate/Advanced Algebra
Right. Logic and Algebra. Where is the "without" part?
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30 replies | 1216 view(s)
05-14-2018,
09:00 PM
tkhunny
replied to a thread
Need urgent help w/ "If x = t/1-t and y = t2/1-t, find dy/dx in terms of t..."
in
Calculus
Are you sitting for the exam right now?! You must start with knowing that t/1-t is NOT the same as t/(1-t). Likewise, t2/1-t is NOT the same as...
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5 replies | 175 view(s)
05-14-2018,
08:58 PM
tkhunny
replied to a thread
I cant figure out how to solve: If you earn $200 every 2.5 minutes, how long...?
in
Arithmetic
What sort of help would you like. You must start somewhere. Proportion Dimensional Analysis
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3 replies | 161 view(s)
05-14-2018,
09:45 AM
tkhunny
replied to a thread
how to set this up? 3mph walking away; 6mph running back; 30 min total time; find d
in
Intermediate/Advanced Algebra
What do you mean by "understand"? Algebra is intended to make abstract concepts more manageable. The fact that the concept remains abstract is...
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30 replies | 1216 view(s)
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About tkhunny
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"Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.
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