Saturday
October 1, 2016

Posts by Damon

Total # Posts: 27,243

world geography
1. disagree 2. agree 3. agree 4. Irish is a folk and the parade is part of their culture :) I am not at all sure fast food is a habit of members of any particular religion! When it says "general population" it is not focusing on a particular folk.
August 23, 2016

algebra 1
yes equation would be c = 0.75 + 0.25 t
August 22, 2016

math
sin x/ cos x = tan x 3 - 4 tan^2 x = 3 - tan^2 x tan x = 0 x = 0, pi etc
August 22, 2016

Medical dosages - no idea
I do not know what your acronyms mean.
August 22, 2016

algebra 1
You are welcome.
August 22, 2016

algebra 1
http://www.mathsisfun.com/definitions/quotient.html
August 22, 2016

algebra 1
Yes, when you see the word quotient you are talking about division.
August 22, 2016

algebra
v = 2.8 - 9.8 t v = 0 at top so t = .286 seconds rising at top h = 12 + 2.8 (.286) - 4.9 (.286)^2 = 12.4 meters how long to fall from 12.4 ? 0 = 12.4 - 4.9 t^2 t = 1.59 seconds to fall from up there so total time = .286+1.59 = 1.88 seconds
August 22, 2016

Math
x-1 = 1/x x^2 - x = 1 x^2 - x - 1 = 0 x = [ 1 +/- sqrt (1+4) ]/2 x = .5 +/- .5 sqrt 5 since it has to be positive x = .5 + .5 sqrt 5
August 21, 2016

Math 2
see above
August 21, 2016

physics
total time = 95/1.26 + 95/3.61 total distance = 95+95 average speed = total distance/total time
August 21, 2016

Calculus
V = x (30-2x)(20-2x) multiply that out Of course part 2 will be to take the derivative and set it to zero to find the height for maximum volume.
August 21, 2016

physics .Henry,Damon,Steve,Saed,bobpursley, And This is my question every one
back in his hands. It has the same horizontal velocity as the train has (ignoring air drag of course) Of course if the train speeds up while the ball is in the air, that changes it, but you can figure that out.
August 21, 2016

physics .Henry,Damon,Steve,Saed,bobpursley, And This is my question every one
Hey, why ask us? You know. In a vacuum, there is no difference, mass does not enter the equations. However if you include air drag, it is like you have a parachute attached. The lead ball will go further.
August 21, 2016

LOL
Do not see graph.
August 21, 2016

physics .Henry,Damon,Steve,Saed,bobpursley, And This is my question every one
a) do r(5) b) dx/dt = u = -12.3 + 4.86 t dy/dt = v = 3.6 t - .39 t^2 c) find sqrt (u^2+v^2) at t = 5
August 21, 2016

PHYSICS ASAP REPLY
A hydrogen filled balloon is lighter than air and rises. It can also burn very rapidly (Google Hindenburg) and it is safer to use helium even though it is not as buoyant.
August 20, 2016

PHYSICS topic is pressure
If you stay there long enough to decrease the oxygen and increase the CO2 and there is no input of fresh air that could happen.
August 20, 2016

PHYSICS topic is pressure
I do not have a lot of trouble breathing with SCUBA gear under 100 feet of water. The pressure there is far greater than that in any deep well full of air that I can imagine. Perhaps this well is full of water? I suppose the increased pressure by increased density of gas makes...
August 20, 2016

typo error
average speed crossing window = 20 m/s now look at increase of speed in 2 meter drop v = Vi + 9.8 (.1) call g = 10 for simplicity v = Vi + 1 but we know (v+Vi)/2 = 20 the average v = Vi + 1 v = -Vi + 40 -------------- 0 = 2 Vi -39 Vi = about 20 at top of window so how long did...
August 20, 2016

Physics
average speed crossing window = 20 m/s now look at increase of speed in 2 meter drop v = Vi + 9.8 (2) call g = 10 for simplicity v = Vi + 20 but we know (v+Vi)/2 = 20 the average v = Vi + 20 v = -Vi + 40 0 = 2 Vi -20 Vi = 10 at top of window so how long did it fall to the top ...
August 20, 2016

Maths Unitary Method
4*12 = 48 48 ban/104 RS (48 ban/104 RS)* 6.5 RS
August 20, 2016

Maths Unitary Method
(48 boxes/6000 pens) * 1875 boxes
August 20, 2016

Maths Unitary Method
(28/550)*700
August 20, 2016

Math
p = k sqrt r p^2 = k^2 r 3.2^2 = k^2 (4) so k^2 = 3.2^2/4 p^2 = (3.2^2/4)(6.5) find p^2 and take the square root
August 19, 2016

computers
I tend to agree, because based on the subject line I may or may not read the text itself. That also tends to make me decide if the thing is spam or not.
August 19, 2016

Mathematics
3 n - 5 n = 3.7 2 n = -3.7 n = -3.7/2
August 19, 2016

Math
g = b/3 b - g = 240 b - b/3 = 240 3 b - b = 720 2 b = 720 b = 360
August 19, 2016

Math
There are 11 + 9 = 20 children of those 20 children 11 are boys 11/20 = 55/100 = 55% of the children are boys Now you try the others.
August 19, 2016

Maths Algebra
speed down = v+2 speed up = v-2 5 (v-2) = 4 (v+2) 5 v - 10 = 4 v + 8 v = 18
August 19, 2016

Science
negative feedback. The increase in body temp caused a reaction (sweating) that counters the temperature increase. Positive feedback would be something that makes you heat up even more.
August 18, 2016

math
n^2 = 8281 n = sqrt (8281) 91 rows * 91 students/row
August 18, 2016

Math- Geometric solutions and problems RIA
I. is 200 *2^n if n = 5, then 200 * 32 II. 2^4 = 16 times as much every hour if it doubles every quarter hour 1500*16^6 (infinite :) III. a r^n + a r^n+1 + a r^n+2 = 70 or a r^2 (1 + r + r^2) = 70 4 a r^n + 5 a r^n+1 + 4 a r^n+2 is arithmetic so 5a r^n+1 - 4a r^n = d 4a r^n+2...
August 18, 2016

Science
I agree.
August 18, 2016

Mechanics
y = x^2 = x * x cm * cm or cm^2 So it is not correct. It is probably a typo or they just mean that lengths are in centimeters, leaving you to figure out that area is therefore in square centimeters.
August 18, 2016

algebra
Hey, Bob Pursley answered this hours ago.
August 18, 2016

algebra
x^2 + 1 = 2 x x^2 -2x + 1 = 0 (x-1)(x-1) = 0 so x = 1 x^anything = 1 and 1 + 1/1 = 2
August 18, 2016

Chemistry
35 x + 37(1-x) = 35.5 -2 x = -1.5 x = .75 1-x = .25 three times as much 35
August 18, 2016

number theory
http://www.jiskha.com/display.cgi?id=1471506858
August 18, 2016

math
yes, cool :)
August 18, 2016

math
g = sin^2(3T) dg/dT = 2 sin(3T) (3) cos(3T) = 6 sin (3T) cos(3T)
August 18, 2016

Maths Algebra
12.75 * 10^-6 and 7 * 10^-6 well 7 is about half of 13
August 17, 2016

Math
Maybe it means log base b of a^2=c That means 2 logb (a) = c or logb(a) = c/2 which means b^(c/2) = a can you take the log of a negative number?
August 17, 2016

physics
ok :)
August 17, 2016

physics
total east = -140 + 250 sin 45 + 280 sin 30 = 176.78 total north = 0 -250 cos 45 +280 cos 30 = 65.71 I do not understand where you get that last x and y in my opinion you must go west 176.78 and south 65.71 tan^-1 65.71/176.78 = 20.4 deg south of west
August 17, 2016

Physics
2 pi R/T = 1670 km/hour
August 16, 2016

Science
find a average speed = (15+7)/2 = 11 m/s so t = 88/11 = 8 seconds so a = (7-15)/8 = - 1 m/s^2 v = Vi + a t 0 = 7 - 1 t t = 7 during final stop d = Vi t + (1/2) a t^2 d = 7*7 - (1/2)49 d = 49/2 = 24.5 meters
August 16, 2016

math
(8/5)2000
August 16, 2016

Algebra
2 1/4 = 9/4 (9/4)/3 = 3/4 3/4 * 12 = 9 inches
August 15, 2016

Social Studies
That is an interesting choice but I disagree.
August 15, 2016

math
Horse named friday?
August 15, 2016

physics
h = (1/2) g t^2 = 4.9 *9 or about 45 meters
August 15, 2016

Science(help please)
Google !!!!
August 15, 2016

Physics
a = dv/dt = (31-15.3)/5 = 3.14
August 15, 2016

math
x and x+25 x^2 + x^2 + 50 x + 625 = 2425 cm^2 2 x^2 + 50 x - 1800 = 0 x^2 + 25 x - 900 = 0 (x-20)(x+45) = 0 x = 20 x+25 = 45
August 15, 2016

Science
plant growth depends on light when you vary the independent variable, light, the dependent variable , growth, changes. I would conclude that the plant needs water and light. Of course I assume they were both in the same soil with all essential nutrients.
August 14, 2016

sorry
I did not notice the second part. L * w = 68200 2 L + 2 w = 1460 L = 730 - w (730-w)w = 68200 730 w - w^2 = 68200 w^2 -730 w + 68200 = 0 w = [ 730 +/- sqrt(532900-272800)]/2 w = [730 +/-510 ]/2 w = 110 or 620 L = 620 and w = 110
August 14, 2016

idea
L * w = 68200 however unless you know more about the ratio of L to w, there are an infinite number of solutions.
August 14, 2016

Math
7 quarters/8 dimes is not 8 dimes / 7 quarters
August 13, 2016

Help- Precalc
since sin α < 0 α is in quadrant 3 or 4 since tan α is +, that puts α in quadrant 3 -5,-7, sqrt 74 triangle since csc β > 0, β is in quadrant 1 or 2 since cot β is -, β is in quadrant 2 -3, 5, sqrt 34 triangle now sin (a-b) = sin a...
August 13, 2016

Math
a-b = 4 a^2-b^2 = 80 (a-b)(a+b) = 80 4 (a+b) = 80 a+b = 20 a-b = 4 ------------ add 2 a = 24 a = 12 so b = 8
August 13, 2016

physics
v = g t = 9.81 t at t = 9, v = 9.81 * 9 at t = 10, v = 9.81 * 10 average speed during tenth second 4.9 (19) distance during tenth = 4.9 * 19 * 1
August 13, 2016

Use parentheses
I do not know what are your numerators and denominators.
August 12, 2016

car rental agency
a is 60 + .22 x b is 56 + .26 x when does 60 + .22 x = 56 + .26 x .04 x = 4 x = 100 miles
August 12, 2016

Algebra 1
http://www.dictionary.com/browse/irrational--number
August 12, 2016

Better
2 sqrt 5 = sqrt 20 sqrt 5 = 2.236067977 IRRATIONAL
August 12, 2016

propability
By the way I am assuming that death is a failure ;)
August 12, 2016

propability
4/20 = 2/10 = 0.2 Ik versta wel.
August 12, 2016

physics
Mass does not change with g, weight does. You seem to be using feet/pounds units so g = 32 ft/s^2 approx on earth Mass = 150 /32 slugs g other = 32 * (34/15)
August 11, 2016

Science -Please answer
I think your control is no cleanser.
August 11, 2016

Trigonometry
tan (angle) = 20/12 so angle = tsn^-1 (20/12)
August 11, 2016

Science 1 question help plz thank you
Basing a conclusion on too little data is not an ethical error but a scientific planning and execution error. Google ethical definition eg: http://www.dictionary.com/browse/ethics
August 10, 2016

Pre algebra
well, look at it here and there x always left of y on number line x=-2 y=-1 -> x-y = -1 and |x-y|=1 x= 8 y= 10 -> x-y = -2 and |x-y|=2 in fact if x < y then x-y is ALWAYS - and |x-y| = y-x so I conclude y-x
August 10, 2016

check my spanish 3
Do I have to write a sentence with it or can I just state the verb?? Sorry, it's a stupid question but I just want to make sure I'm correct
August 9, 2016

check my spanish 3
escriba la forma del verbo indicado en el tiempo indicado yo/ tener/ futuro My answer is tendré
August 9, 2016

math
163.50 ( 6/11 ) = 88.18
August 9, 2016

math
3*7*11 = 231 and 2+3+1 = 6 so that does it, 231 ====================== three times that would have a sum of 18 so 3*231 = 693
August 9, 2016

Maths
a = 5 p/7 p = a + 92 so a = 5(a+92)/7 7 a = 5 a + 460 2 a = 460 a = 230
August 9, 2016

messed up physics
acceleration is the rate of change of velocity A = dV/dt The ratio is not meaningful. Did you get this language from a book?
August 9, 2016

Math
60/12 = 5
August 8, 2016

sign error
d^2 -10 d - 25 = 0 d = [ 10 +/-sqrt (100+100) ]/2 = 5 +/- .5 sqrt (200) = 5 +/- 5 sqrt 2 use + so 5 sqrt 2 left of zero = - 7.07
August 8, 2016

Physics
You show a charge at x = 5 but you ask for the E field there It is UNDEFINED. 1/r^2 as r--->0 is infinite r is simply the distance between the charge and the location where you compute E to the left of 5, the E field due to + q at 5 is left (repels) however the E field due ...
August 8, 2016

Math
You are welcome.
August 8, 2016

Math
s = 2 m s = b/5 but m = 23 so s = 2 m = 46 but b = 5s so b = 230
August 8, 2016

Chem
You are welcome ;)
August 8, 2016

Chem
LOL, hint - it is below freezing point of water with no antifreeze
August 8, 2016

Math
x + 2x + 3x = 480 6 x = 480 x = 80 2x = 160 3x = 240
August 8, 2016

Math
You are welcome :)
August 8, 2016

Math
one tile area = .1*.1 = .01 m^2 total area = 2.4 m^2 2.4 /.01 = 240/1 = 240 tiles
August 8, 2016

algebra
y = (3/4) x - 3 so slope = 3/4 y = (3/4) x + b 3 = (3/4)8 + b b = -3 so y = (3/4) x - 3 or 3/4 = (y-3)/(x-8)
August 8, 2016

Science
You are welcome :)
August 8, 2016

Science
I too would have picked A and C.
August 8, 2016

Math
yes
August 8, 2016

Math
k = y/x = 350/40 dollars/hour
August 8, 2016

Science
Some would argue about C. However I agree that C is fundamentally science because the planting dates and predicted climate in the almanac are based on observed data over the years. Of course the seed catalog also tells you when to plant what in which zone without pretending to...
August 8, 2016

Calc
slope = f' = 6 x - 5 x^4 at x = 1 slope = m = 6(1)-5(1)^4 so m = 1 y = 1 x + b to get b 7 = 1(1) + b b = 6 so y = x + 6
August 8, 2016

Applied Stats
You are making a mountain out of a mole hill I think: .24 * 20 is the number that have been told 20 - .24*20 = number that have not been told
August 8, 2016

physics
weight = force = 25*9.8 N force = k x 25 * 9.8 = 700 x
August 8, 2016

statistics
This is really linear programming, not statistics. p = 4 a + 6 b That is the objective function we wish to maximize 1 a + 3 b </=240 wood constraint 3 a + 4 b </=360 plastic constraint 2 a + 1 b </=180 steel constraint graph those three constraint lines with a on x ...
August 8, 2016

math
78 cos (180-165)
August 7, 2016

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