Tuesday
July 7, 2015

Posts by Damon


Total # Posts: 21,431

math
1.333 *1000 feet * (1 mile/5280 feet) = 1333/5280 = 0.2525 miles = 0.25 a little over a thousand feet is a little over a quarter of a mile by the way the Marianas Trench is more like 30,000 feet deep or over five miles
January 14, 2015

algebra
s = 2 k s-10 + k-10 = 23 s + k = 43 2 k + k = 43 3 k = 43 k = 43/3 = 14 1/3 s = 28 2/3
January 14, 2015

science
1. charged 2. pull 3. motion, work, potential energy(voltage), kinetic energy - beats me what they want her to say
January 14, 2015

Hist
It is not d.
January 14, 2015

Physics
A has a lower specific heat (heat capacity) Q = m C (T2-T1) for the same Q, lower C means bigger temp change
January 14, 2015

Engineer
You are welcome of course. Google water clock by the way.
January 14, 2015

Engineer
Water flows down because of gravity.
January 14, 2015

Physics C
force = E q force * distance = work done = Ke = Eqd so .880 = 64.0 * q * 0.500 solve for q
January 14, 2015

Math
Any time :)
January 14, 2015

Math
4 x = -12 x = -3 indeed
January 14, 2015

Math
Yes, that is correct
January 14, 2015

Math
3 (p - .35) = 3.45
January 14, 2015

physics
How far up from earth surface? 6.92 sin theta where theta is the angle up from horizontal mg opposite to up motion so g does negative work so - m g sin theta * (6.92)
January 14, 2015

Algebra 1
(2.5*10^-9)(1.5*10^3) = 3.75*10^-6 yes
January 14, 2015

math
7 (41/10) = $28.70
January 14, 2015

Math
t = 2h-4 h = 6 so t = 12-4 = 8 legs
January 14, 2015

Math
J + S + D = 5416 J = 1615 S = 6 D so 1615 + 6 D + D = 5416 7 D = 3801 D = 543 so S = 6 D = 3258
January 14, 2015

Math
.4 is bigger than .3
January 14, 2015

Math equation
No problem :)
January 14, 2015

Math equation
4 n = 6-5 = 1 n = 1/4
January 14, 2015

Math equation
I do not know for question 1. It could be + or -. My guess is that you are right. question 2 is 4 n - 6 = -5
January 14, 2015

math
(115 words/3 min)(7 min ) = 268
January 14, 2015

math
You are welcome ;)
January 14, 2015

math
elevation angle A = 45 degrees = pi/4 radians tan A = h/25 d tan A/dA = sec^2 A = (1/25) dh/dA so 25 sec^2 A * dA/dt= dh/dt = 5 dA/dt = (1/5) cos^2 A but cos^2 A = 1/2 dA/dt = .1 radians/second So I agrees but maybe you want degrees? .1 Rad/s( 180 deg/rad) = 18 degrees/second
January 14, 2015

Math
You are welcome.
January 14, 2015

Math
$20 per thousand ? 20*80 = 1,600
January 14, 2015

Algebra 2 ( I doubt it)
I bet you mean 9 x^2 - 100 (3x-10)(3x+10)
January 14, 2015

trigonometry
[sin T/cos T + cos T/sin T] /( sin T/cos T) = [ sin T + cos^2 T/sin T ]/ sin T = [ sin^2 T + cos^2 T ] /sin^2 T = 1/sin^2 T = csc^2 T
January 14, 2015

algebra 1
You are welcome.
January 14, 2015

algebra 1
If it is all under that square root sign then divide all the exponents by 2 25 x^2 z^4 y
January 14, 2015

Math.
You are welcome.
January 14, 2015

Math.
w = .5 x .5 * 120 = 60 grams
January 14, 2015

math
Mars 100 * 56.55/150 = 37.7% Moon 100 * 24.9/150 = 16.6% (about 1/6, remember that) Mars .377 x Moon .166 x .166 * 180 = 29.9 pounds (note 180/6 =30) 180 * 2.364
January 14, 2015

math
A. (x^1/2)^4√x^6 x^2 x^3 = x^5 B. I do not know if you mean (x^4)^.5 y^12 or (x^4 y^12)^.5 if the second then x^2 y^6 C if you mean (a^6 b^3)^1/3 then indeed a^2 b I am at a loss with your notation
January 14, 2015

Physics 10 (helppp please) thannnks
delta L/L = w /(E A) .008/120 = w/(E*6) w = 6 E * .008/120
January 14, 2015

physica science
When they are both in the same direction and therefore add. |R| = |A| |B| cos theta |cos theta| </= 1 for all theta and is max of 1 when theta = 0 5+7 = 12 If theta is the angle between vectors.
January 14, 2015

algebra
(-25/10)(1/A^2)( B^4) -25 B^4/(10 A^2)
January 14, 2015

Physic
https://iit.edu/arc/workshops/pdfs/Magnetic_Field.pdf
January 14, 2015

mathematics
L=(5x^2-4x-3) w=(x^2-x+1) h=(3x^2-5) use distributive property for multipication Lw: 5 x^2(x^2-x+1) = 5x^4-5x^3+5x^2 -4x(x^2-x+1)= -4x^3+4x^2-4x -3(x^2-x+1)= -3x^2 +3 x -3 add Lw = 5 x^4 - 9 x^3 + 6 x^2 -x - 3 for side areas 2 Lw = 10x^4-18x^3+12x^2-2x-6 do the same for top ...
January 14, 2015

Algebra
x - 9 = 6 x + 21 5 x = 30 x = 6
January 13, 2015

Math
85/100 = 17/20
January 13, 2015

Science
work = force * distanced moved in direction of force W = 10 * 1.5 = 15 Joules
January 13, 2015

MATH
Yes, it is D
January 13, 2015

MATH
NO! hey sketch both graphs for x = -1, x=+1, x = 0
January 13, 2015

MATH
Please sketch a graph. It is two V shapes identical except that one is 15 below the other.
January 13, 2015

Math
1/4 went 1/4 * 496 = 124
January 13, 2015

math
dimensions are length = 8+4 = 12 width = 4 +4 = 8 2 L + 2 w = 24 + 16 = 40
January 13, 2015

algebra 2
x = 0.04 t 25 = 0.04 t t = 25/.04 = 625 seconds which is about ten and a half minutes
January 13, 2015

math
You are welcome
January 13, 2015

math
yes 2.5 * 15 = 37.5 and 2.5 hours per day * 22 days = 55 hours
January 13, 2015

physics
It is going away so you hear a longer wavelength so LOWER frequency
January 13, 2015

algebra 2 help typo?
x+4 = 8/3 x = 8/3 - 12/3 = -4/3 or -x-4 = 8/3 x+4 = -8/3 x = -20/3
January 12, 2015

alegebra 2 Help
(x+h)^2 = x^2 + 2 h x + h^2 x(x^2 + 2 h x + h^2)=x^3 +2 hx^2+ xh^2 h(x^2 + 2 h x + h^2)=hx^2+2h^2x+h^3 sum=x^3 +3hx^2 +3h^2x+ h^3 etc
January 12, 2015

alegebra 2 Help
so continue [ x^3 -(x+h)^3 ] / [h x^3(x+h)^3]
January 12, 2015

alegebra 2 Help
[1/(x+h)^3 - 1/x^3 ]/h
January 12, 2015

physics
reaches top in 1.5 seconds v = Vi - g t 0 = 5 - 1.5 g g = 5/1.5 = 3.33 m/s^2 v = 15 - 3.33 t 8 = 15 - 3.33 t t = 2.1 seconds h = 15 t - (3.33/2) t^2
January 12, 2015

Legal research
Would you believe it says a digest is an index ? :)
January 11, 2015

Legal research
http://lawlibguides.byu.edu/content.php?pid=225319&sid=1961818
January 11, 2015

Legal research
I believe you are correct.
January 11, 2015

math
You are welcome.
January 11, 2015

math
M = 2 P- 4 so P + 2P-4 = 32 3 P = 36 P = 12 then Marc has 24 - 4 = 20
January 11, 2015

legal research writings
Then I suppose go with the dictionary. I do not think law dictionaries have pockets with updates, but I am not a legal scholar.
January 11, 2015

legal research writings
Well, I agree that a treatise might not be typically updated.
January 11, 2015

legal research writings
but I think you might just publish a new edition of a dictionary.
January 11, 2015

legal research writings
I think you might: http://en.wikipedia.org/wiki/Legal_treatise
January 11, 2015

legal research writings
Would you update treatises?
January 11, 2015

Legal research
Yes, Lucina is right http://www.acronymfinder.com/LexisNexis-%28online-legal-research-tool%29-%28LN%29.html
January 11, 2015

Legal research
go with Lucina, I just Googled it.
January 11, 2015

Legal research
sorry, Google shows: Lex-Nex
January 11, 2015

chemistry
mol of Na O H = 23+16 + 1 = 40 grams so 1 gram is 1/40 mol = .025 mol .025 mol = .2 mol/liter * x liters so x = .025/.2 = .125 liters or 1/8 liter
January 11, 2015

Algebra Help Please
here, for any old x x^0 * x^1 = x^(1+0) = x^1 so x^0 was 1
January 11, 2015

Algebra Help Please
ANYTHING^0 = 1 no more steps needed
January 11, 2015

algebra
HEY, you were almost there! -4 1/x^2 x * y^4 y^7/1 -4 *1/(x^2*x) * y^(4+7) = -4 y^11/x^3
January 11, 2015

algebra
12 x^-2 y^4 /{ -3 x (y^-7) } ?? is -4 x^-3 y^11 = -4 y^11/x^3
January 11, 2015

Math
maybe average = (7.6+10.4)/2 = 9 9 +/- |1.4|
January 11, 2015

physics
we must find the change of momentum during contact, in other words Vi and u Vi = w sin 61.8 u = w cos 61.8 if w is the initial speed 176 = u t where t is total time in air v = w sin 61.8 - g t h = Hi + Vi t - 4.9 t^2 0 = 0 + Vi t - 4.9 t^2 = t(Vi - 4.9 t) so it is at the ...
January 11, 2015

Math
10/(100+20) = 10/120 = 1/12
January 11, 2015

Algebra 2
z = k x y^2/ (r s) where k is a constant
January 11, 2015

Physics
average force = change of momentum/time instantaneous force if m is constant = m A so average force = 97.7 / .368 Newtons
January 11, 2015

Algebra II
(f+g)(x) = 8 x^2 + 1/x^2 (f-g)(x) = 8 x^2 - 1/x^2 f [g(x)] = f (1/x^2) = 8(1/x^4) = 8/x^4 f [1/g(x)] = f (x^2) = 8 x^4
January 11, 2015

Algebra 2
Intersection of a hyperbola with an ellipse, cool 2 x^2 - 5 y^2 = 1 2 x^2 + 10y^2 = 136 --------------------subtract -15 y^2 = -135 y^2 = 9 so y = +/-3 x^2 = 68-45 = 23 so x = +/-sqrt(23) (sqrt 23 , 3) (sqrt 23 , -3) (-sqrt 23 , 3 ) (-sqrt 23 , -3)
January 11, 2015

math
The trick is: Out of every four bagels one is sesame and three are plain so that sesame/plain = 1/3 sesame/all = 1/4 = .25 = 25% plain/all = 3/4 = .75 = 75% (1/4) 24 = 6 sesame (3/4) 24 = 18 plain
January 11, 2015

Calculus
f' = 1/x^2 at x = -3, f = 1/3 at x = -1/2, f = 2 slope = (2 - 1/3)/(-1/2 + 3) = (5/3)/(5/2) = 2/3 where is the derivative = 2/3 ? 1/x^2 = 2/3 x^2 = 3/2 x = +/- sqrt (3/2) yes B
January 11, 2015

Math
first equation y - x/2 = 5 2 y - x = 10 second equation -x + y/5 = -13 y - 5x = -65 2 y - 10 x = -130 so two equations 2 y - x = 10 2 y - 10 x = -130 --------------------subtract 9 x = 140 x = 15.56 y = 5 + x/2 = 12.78
January 11, 2015

Calculus
yes, v = 6 t - 3 t^2 dv/dt = 0 at max or min = 6 - 6 t so max or min at t = 1 max or min? d^2v/dt^2 = -6 so max what is that max v at t = 1 v(1) = 6-3 = 3 so C.
January 11, 2015

MATH
I think you will have to try various interest rates and graph that function if i = .1 or 10% 6.25 = 5.76 if i = .08 6.25 = 6.24 close to 8%
January 10, 2015

Math
scroll down a bit. I just did that not a good idea to use your real name
January 10, 2015

Polynomials
it is asking if the left is the same as the right look at a (a-b)(a-b) = a^2 -2ab + b^2 Always then b (a+b)(a+b) = a^2 + 2ab + b^2 NOT a^2+b^2 and is ONLY true if a or b is zero same problem with c You have a typo in d but if that is a + sign then true (a+b)(a+b)=a^2+2ab+b^2
January 10, 2015

Math
(4x-1)/[(x+3)(x+4)] * (x+4)(x-3)/(2x-1) when you divide fractions, invert the denominator and multiply (x+4) cancels (4x-1)(x-3) /[ (x+3)(2x-1)]
January 10, 2015

Math
yours (x^2-2x)/(x+1)x (x^2-1)/(x^2+x-6) My work on simplifying the expressions x(x-2)/(x+1) * (x+1)(x-1)/[(x+3)(x-2)] note your sign error in second denominator (x+1) and (x-2) cancel x(x-1) / (x+3)
January 10, 2015

Calculus
2^1 +2^1 *2^1 + 2^1* 2^2 ..... 2^1*2^(n-1) is 2 + 2*2 + 2 *2^2 .... note 2^1 * 2^(n-1) = 2^n 2^1 =2 = a 2 = r sum from i = 1 to n = 2 ( 1-2^n)/(1-2) = -2 (1-2^n) =2^(n+1) - 2
January 10, 2015

calculus
Do you mean from 0 to 5 and from 0 to 6 ? if so 2 (x^2 -3 x) at 5 - at 0 = 2 (25 - 15) - 0 = 20 at6 it is 2 (36-18) = 2*18 = 36
January 10, 2015

calculus
what is the derivative of (5/7)x^7 ? what is the derivative of -x^(-2) ?
January 10, 2015

Physics
period = T = 60 seconds/26 = 30/13 f = 1/T = 13/30 A = 3.9 cm y = -3.9 cos (2 pi t/T) because y = -3.9 when t = 0 y = - 3.9 cos (26 pi t/30)
January 10, 2015

Math
I can not simplify it but f(x) = -3(x^2+4x+4) -x-1 = -3 x^3 -12 x -12 - x - 1 = -3x^2 - 13 x -13 sure enough f(x) = [(x-2)(x+1)] / [ (3x+1)(x+1) ] = (x-2)/(3x+1) we win again
January 10, 2015

Math
(x-2)(x+1)/(x+1) = x-2 = g(x) (x-4)(x+3)/(x+3) = x-4 g(x) = (x-2)(x-4)/(x-2) = x-4 also
January 10, 2015

math
13,000 = 6,000 +.05(x-20,000)
January 10, 2015

maths
took me 40 http://www.jiskha.com/display.cgi?id=1420913304
January 10, 2015

maths-6th grade
sorry I took so long, had a grandson's hockey game in the middle of that.
January 10, 2015

maths-6th grade
t x 0 0 1 20 2 10 3 30 4 20 5 40 6 30 7 50 8 40 9 60 10 50 11 70 12 60 13 80 14 70 15 90 16 80 17 100 18 90 19 110 20 100 21 120 22 110 23 130 . . . 40 200 averages 5 meters/min
January 10, 2015

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