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01-20-2018,
10:33 AM
Quick
started a thread
Thought experiment, don't know where else to put this.
in
Math Odds & Ends
Where to start... Let's say you have a circle. This circle represents all possible outcomes (infinity). Within the circle, is another circle. What...
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48 replies | 2188 view(s)
01-19-2018,
02:38 AM
mmm4444bot
started a thread
Trump and Global Warming
in
Math Odds & Ends
In the past, our president has claimed that global warming is a hoax. (He thought the Chinese created the hoax.) However, as with other matters...
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38 replies | 1612 view(s)
01-20-2018,
02:37 PM
bennyJ
started a thread
Pretty tricky probability "dice" question
in
Probability / Statistics
Suppose a modified version of the dice game craps is played with two regular (i.e., perfectly symmetrical) dodecahedra. Each die has its sides...
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17 replies | 1114 view(s)
01-21-2018,
09:36 PM
Quick
started a thread
I forgot how to reverse foil (such as X^2 + 2X + 2)
in
Beginning Algebra
Take this equation: X^2+2X+2 If you reverse foil (I remember how to foil I think) would you get: (X+1)(X+1)
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19 replies | 888 view(s)
02-02-2018,
10:11 AM
richiesmasher
started a thread
Find angle of latitude: distance between P (63° N, 70°E), R (63° N, x° E) is 900km
in
Geometry and Trig
Hi I've done a question on latitude and longitude. It states : Take the radius of the earth to be 6400km and pi to be 3.142. (i)The distance...
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19 replies | 742 view(s)
01-19-2018,
09:49 PM
Quick
started a thread
I'm taking this here because no one else understands what I am saying.
in
Beginning Algebra
OK, so I have stated this on 3 different forums and pretty much no one really knows what I am saying. So consider this a test of my sanity. The...
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17 replies | 591 view(s)
01-23-2018,
09:05 PM
tkhunny
started a thread
Forum Policy Discussion
in
Math Odds & Ends
… we're not a free consulting service.
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15 replies | 590 view(s)
02-02-2018,
11:59 AM
sheejave
started a thread
Find the number of pencils and the number of pens that Sharon can buy if she has to b
in
Pre-Algebra
A wooden pencil costs 30 cents and a pen costs 55 cents. Sharon is given $9.50 and is told to spend the money as much as possible on at least one...
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13 replies | 766 view(s)
01-19-2018,
10:57 AM
bennyJ
started a thread
Visualization Problem: Dots and Lines
in
Geometry and Trig
Five dots are arranged in space so that no more than three at a time can have a single flat surface pass through them. If each group of three dots...
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13 replies | 523 view(s)
02-09-2018,
12:22 AM
bennyJ
started a thread
Given five drawn shapes in a sequence, infer the next shape...?
in
Geometry and Trig
Several identical cubes are fused to form a solid object. Given the following five views of such an object, draw the sixth.
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13 replies | 685 view(s)
02-06-2018,
09:17 PM
magn
started a thread
Special Right Trinagle: "...Clay Ave, Rt 35 are straight, perp. to each other."
in
Geometry and Trig
Hello! I understand how to apply the 30-60-90 and 45-45-90 triangle ratios; however, I do not understand how these streets are in relation to each...
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14 replies | 382 view(s)
01-30-2018,
05:49 AM
mmm4444bot
started a thread
Cryptic Godsend?
in
Math Odds & Ends
Baboons without a degree are blessings (5)
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15 replies | 457 view(s)
01-22-2018,
09:34 AM
richiesmasher
started a thread
Balance to be repaid: cash price $12480; computer bought on hire purchase
in
Finance/Business Math
Hey, I have a question here and I'm mad at myself I can't figure it out, it's literally on the easy section. It goes, : ''The cash price of a...
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13 replies | 532 view(s)
02-02-2018,
02:18 PM
muzik
started a thread
Continuity lim x->-13*pi/14 cos(7x - cox(7x))
in
Calculus
Help please I should be able to just apply x into the function but I'm having trouble solving lim x->-13*pi/14 cos(7x-cox(7x)) I get to ...
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14 replies | 391 view(s)
01-31-2018,
11:54 AM
enoimreh7
started a thread
Biggest natural number whrer each of her figures is smaller ...
in
Intermediate/Advanced Algebra
Hello dear Sirs! We try to solve this Problem, may be, you could help us to find a beginning of the solution? Which is the biggest natural...
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14 replies | 455 view(s)
01-29-2018,
04:27 AM
mariam90
started a thread
Davied has less than one-half the number of balloons that kaite has .
in
Beginning Algebra
1. Davied has less than one-half the number of balloons that kaite has . If David has d balloons and kite has K balloons has ,which of the ...
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12 replies | 545 view(s)
01-25-2018,
09:05 AM
JSITD
started a thread
Ratios Of Lines Within Quadrilateral (Proof): Show AX:XC is same as AB:BC
in
Geometry and Trig
(a) In a quadrilateral ABCD, the sides AB and CD are parallel, and the diagonal BD bisects angle ABC. Let X be the point of intersection of the...
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11 replies | 541 view(s)
02-01-2018,
01:23 AM
prepforcalc
started a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
In the lines below, where does the 2Vo come from? The 2Vo I speak of is to the right of the first equal sign. . . . . .v(t)^2\, =\, v_0^2\, +\,...
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13 replies | 399 view(s)
02-08-2018,
09:13 PM
allegansveritatem
started a thread
how to write an equation and graph it given only one point on the line
in
Intermediate/Advanced Algebra
The instructions for this problem are: Given the ordered pair (1.3) write an equation for the line and graph it. I came up with this: x +y= 4. The...
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11 replies | 380 view(s)
01-28-2018,
01:50 AM
Jeane
started a thread
geometry of the derivative: applications of maximisation and minimisation
in
Calculus
Here is the question: the diagram(which I am unable to draw) has two parabolas in the first quadrant, one with a minimum at (3,7) and one with a...
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12 replies | 409 view(s)
01-24-2018,
09:28 PM
Hasoniii7
started a thread
100 animals 100dollars
in
Pre-Algebra
Hey, this one is different. Can you someone solve it for me? A farmer buys 100 animals for $100. Cow=$10 Sheep=$5 Chicken=$3 Rabbit=$0.50...
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10 replies | 463 view(s)
02-06-2018,
10:55 AM
calc67x
started a thread
Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))
in
Calculus
I had a math problem that I need help with. I already have the answer but I can't arrive at the explanation. It is the following: ...
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10 replies | 353 view(s)
01-23-2018,
05:34 PM
trader90
started a thread
Want position-size eqn: X trading balance, Y% max loss per trade, Z% stop loss
in
Finance/Business Math
If X is my trading balance, Y% is max loss per trade and Z% is stop loss. For Example: X = $1000 trading balance Y= max loss per trade...
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9 replies | 636 view(s)
01-26-2018,
02:45 PM
SMcNeill
started a thread
Can someone prove this? (using A+(B-A)/2 instead of (A+B)/2 to avoid overflow errors)
in
Intermediate/Advanced Algebra
As a computer programmer, sometimes I have to deal with data-size limits when working with numbers, and I have to be careful of "OVERFLOW ERRORS"...
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9 replies | 433 view(s)
02-10-2018,
11:52 PM
mathdaughter
started a thread
Justify steps w/ property, definition, or operation: (3x + 10x) to x(3 + 10) to x(13)
in
Beginning Algebra
In the following, justify each step with a property, definition or an operation. 1. Justify going from (3x + 10x) + 2y to x(3 + 10) + 2y We...
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11 replies | 400 view(s)
01-24-2018,
05:51 AM
themuffinyamber
started a thread
Significant Figures in Mixed Operations Problem Driving Me Bonkers
in
Intermediate/Advanced Algebra
:confused: So this is driving me crazy. In my Chemistry class, we are learning about retaining significant figures and digits of precision in...
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10 replies | 400 view(s)
01-31-2018,
07:07 AM
supreme
started a thread
How to solve three-term ratio problem with two variables?
in
Intermediate/Advanced Algebra
This problem has me completely stumped: (600-x)/60:(800-y)/80:(1000+x+y)/100=3:4:5 How can I simplify this ratio in order to solve for x and y? I...
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9 replies | 286 view(s)
02-07-2018,
08:53 AM
richiesmasher
started a thread
Find missing angles In pentagon ABCDE and angle ABC=angle BCD=CDE
in
Geometry and Trig
Hello, here is a pentagon ABCDE and angle ABC=angle BCD=CDE Calculate giving a reason for each answer the magnitudes of angles (i) ABC and (ii)...
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10 replies | 348 view(s)
01-23-2018,
11:51 AM
Whutever42
started a thread
Superbowl Predictions?
in
Math Odds & Ends
I would like to know the probablity of which team will win (Pats or Eagles) and what score? Thank you in advanced!
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9 replies | 436 view(s)
01-20-2018,
05:09 PM
Alex_Of_Darkness
started a thread
Need Help w/ Partial Elasticity Problem: sum[i=1,3]El x_i z
in
Calculus
Hi everyone, does anyone would be able to help me with that one? Don't even know where to start so if you could show me how to solve it it would be...
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8 replies | 517 view(s)
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