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Wilmer
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Today,
17:52
Wilmer
replied to a thread
Jokes
in
Chat Room
Geezzzz....forgot about this one; answer: remove the "n": in my books, a snob is a sob !! 2nd definition: a snob acts as if balancing an...
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186 replies | 30002 view(s)
Today,
16:50
MarkFL
replied to a thread
Find the areas of the shaded regions.
in
Geometry
14.) I would take the area of the circular sector, and subtract from it the area of the triangle to get the shaded area \(A\): ...
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1 replies | 25 view(s)
Today,
09:17
Wilmer
replied to a thread
Have a laff!
in
Chat Room
Got it now Mr.Fly?
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3 replies | 52 view(s)
Today,
02:57
MarkFL
replied to a thread
Areas of plane figures
in
Geometry
I just noticed you are instructed to round to the nearest tenth, not ten. :) To find the height you need to use: 3^2+h^2=8^2\implies...
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3 replies | 53 view(s)
Today,
01:55
MarkFL
replied to a thread
Areas of plane figures
in
Geometry
1.) The area for a trapezoid is given by: A=\frac{h}{2}(B+b) Plugging in the given values, we find: A=\frac{6\text{ m}}{2}(11+10)\text{...
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3 replies | 53 view(s)
Yesterday,
22:18
MarkFL
replied to a thread [SOLVED]
1.1.2 initial value problem
in
Differential Equations
We have: \frac{d}{dt}\left(e^{-2t}y\right)=-5e^{-2t} Integrate using the boundaries: \int_{y_0}^{e^{-2t}y}\,du=-5\int_{0}^{t}e^{-2v}\,dv ...
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7 replies | 95 view(s)
Yesterday,
20:08
MarkFL
replied to a thread [SOLVED]
1.1.2 initial value problem
in
Differential Equations
In your last line, on the LHS, you want: \left(e^{-2t}y\right)' Or what I would write: \frac{d}{dt}\left(e^{-2t}y\right) And on the RHS,...
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7 replies | 95 view(s)
Yesterday,
19:43
Wilmer
started a thread
Have a laff!
in
Chat Room
There once was a pretty young lass Standing in water up to her knees This poem does not rhyme yet Just wait till the tide comes in
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3 replies | 52 view(s)
Yesterday,
16:48
MarkFL
replied to a thread
Geometry help. Arc help
in
Geometry
Note that the instructions say to express your answers in terms of \(\pi\). :)
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2 replies | 56 view(s)
Yesterday,
16:45
MarkFL
replied to a thread
Find the area of the shaded region in terms of pi. (Geometry)
in
Geometry
I would first reduce: \frac{270^{\circ}}{360^{\circ}}=\frac{3}{4} And so we now have the area \(A\): A=\frac{3}{4}\pi r^2 Can you...
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3 replies | 61 view(s)
December 11th, 2018,
02:44
MarkFL
replied to a thread
Special triangles problem and distance
in
Pre-Calculus
I would let \(d_C\) be the distance from point C to the tree in meters, and so we may write: \tan\left(30^{\circ}\right)=\frac{4}{d_C}\implies...
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1 replies | 58 view(s)
December 11th, 2018,
02:18
MarkFL
replied to a thread
don't understand the question
in
Pre-Calculus
You haven't studied Euler's formula? How about de Moivre's theorem?
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3 replies | 61 view(s)
December 11th, 2018,
00:08
MarkFL
replied to a thread
don't understand the question
in
Pre-Calculus
I would let: y=8\left(\frac{\sqrt{3}}{2}+\frac{1}{2}i\right)=8e^{\Large\frac{\pi}{6}i} Can you proceed?
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3 replies | 61 view(s)
December 9th, 2018,
18:49
MarkFL
replied to a thread
Area of iscoceles triangle
in
Pre-Calculus
Let's check your answer using Heron's formula...the semi-perimeter \(s\) is 8, hence: A=\sqrt{8(8-6)(8-6)(8-4)}=\sqrt{2^7}=8\sqrt{2}\quad\checkmark
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1 replies | 50 view(s)
December 9th, 2018,
10:56
Wilmer
replied to a thread
Simple three way calculation
in
Pre-Algebra and Algebra
That's quite a simple li'l problem; wonder why it was written up so confusingly! 36 + 9 + 27 = 72 72 / 3 = 24 Satan: 36 - 24 = 12...
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1 replies | 83 view(s)
December 8th, 2018,
22:52
MarkFL
replied to a thread
Could someone check my answer?
in
Pre-Calculus
I would begin with the double-angle identity for the tangent function: \tan(2\theta)=\frac{2\tan(\theta)}{1-\tan^2(\theta)} Using the value...
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2 replies | 73 view(s)
December 8th, 2018,
20:18
MarkFL
replied to a thread [SOLVED]
2.2.20 initial value and interval...trig subst
in
Differential Equations
Yes, I would let: \theta=\arcsin(x)\implies x=\sin(\theta)\implies dx=\cos(\theta)\,d\theta And then we have after simplification, and using...
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4 replies | 100 view(s)
December 6th, 2018,
20:31
MarkFL
replied to a thread
profile upgrade
in
Questions, Comments, and Feedback
Good idea! Done. (Cool)
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7 replies | 182 view(s)
December 6th, 2018,
20:06
Wilmer
replied to a thread
assigned seating
in
Basic Probability and Statistics
Same as picking 9 balls numbered 1 to 9 at random: probability that order will be 1,2,3,4,5,6,7,8,9 ?
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1 replies | 555 view(s)
December 6th, 2018,
17:25
MarkFL
replied to a thread
profile upgrade
in
Questions, Comments, and Feedback
Whoops...I already removed it. :(
see more
7 replies | 182 view(s)
December 6th, 2018,
17:16
MarkFL
replied to a thread
profile upgrade
in
Questions, Comments, and Feedback
I put that there when you requested a badge. You don't like it? (Crying)
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7 replies | 182 view(s)
December 5th, 2018,
10:49
Wilmer
replied to a thread
HELP! How to calculate wage for assistants at hair salon?
in
Business Mathematics
This one has me pulling my hair out !
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2 replies | 96 view(s)
December 5th, 2018,
10:30
Wilmer
replied to a thread
Li'l math square...
in
Chat Room
Yagotitt My.Fly !!
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3 replies | 194 view(s)
December 4th, 2018,
15:27
MarkFL
replied to a thread
HELP! How to calculate wage for assistants at hair salon?
in
Business Mathematics
Using your example data, I would look first at stylist A and see that during their time working, there were 13 hours worked by the assistants. For...
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2 replies | 96 view(s)
December 4th, 2018,
13:31
MarkFL
replied to a thread
Composit Functions
in
Pre-Calculus
Hello, and welcome to MHB! (Wave) We are given: g(x)=2f(x-1) We are also given 5 points in the form: (x,f(x))
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2 replies | 93 view(s)
December 3rd, 2018,
20:22
MarkFL
replied to a thread [SOLVED]
de2.2.12 dr/dθ = r^2/θ, r(1) = 2 IVP, graph, interval
in
Differential Equations
You have: \frac{1}{r}=-\ln(\theta)+\frac{1}{2} If we combine terms on the RHS: \frac{1}{r}=\frac{1-2\ln(\theta)}{2} Invert both sides:
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8 replies | 224 view(s)
December 2nd, 2018,
00:16
MarkFL
replied to a thread [SOLVED]
de2.2.12 dr/dθ = r^2/θ, r(1) = 2 IVP, graph, interval
in
Differential Equations
You want a negative sign on the left resulting from the application of the power rule. :)
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8 replies | 224 view(s)
December 2nd, 2018,
00:13
MarkFL
replied to a thread
Find the degrees of an angle
in
Geometry
Suppose the 3 points are given by: \left(x_i,y_i\right) where i\in\{1,2,3\} Now further suppose we wish to make one line segment from point 1...
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1 replies | 103 view(s)
December 1st, 2018,
23:34
MarkFL
replied to a thread [SOLVED]
de2.2.12 dr/dθ = r^2/θ, r(1) = 2 IVP, graph, interval
in
Differential Equations
I would begin with: \int_2^r u^{-2}\,du=\int_1^{\theta} v^{-1}\,dv What's the next step?
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8 replies | 224 view(s)
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About Wilmer
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Retired, widower, grandfather...
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Ottawa Ontario Canada
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I'm a man of few words...but I use them often !
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Showing Friends 1 to 4 of 4
December 13th, 2018
17:48 -
Wilmer
clicked Likes for this post:
Re: Jokes
by
Evgeny.Makarov
"What is more beautiful:...
09:17 -
Wilmer
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Re: Have a laff!
by
Olinguito
There once was a pretty...
09:01 -
anemone
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Have a laff!
by
Wilmer
There once was a pretty...
03:03 -
Olinguito
clicked Likes for this post:
Have a laff!
by
Wilmer
There once was a pretty...
December 12th, 2018
20:35 -
topsquark
clicked Likes for this post:
Have a laff!
by
Wilmer
There once was a pretty...
20:30 -
MarkFL
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Have a laff!
by
Wilmer
There once was a pretty...
December 5th, 2018
04:23 -
Olinguito
clicked Likes for this post:
Li'l math square...
by
Wilmer
A + B - C = D + / +...
December 1st, 2018
22:03 -
anemone
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Li'l math square...
by
Wilmer
A + B - C = D + / +...
November 27th, 2018
00:26 -
greg1313
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Re: Equation with parameter
by
Wilmer
$$4x^2-a^2=(2x+a)(2x-a)$$...
November 26th, 2018
17:28 -
Wilmer
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Re: Equation with parameter
by
MarkFL
Mark, seems to me that...
November 25th, 2018
17:55 -
Klaas van Aarsen
clicked Likes for this post:
Li'l math square...
by
Wilmer
A + B - C = D + / +...