Tuesday
October 21, 2014

Posts by Damon


Total # Posts: 18,972

Algebra 2
y = 7 + 5/(x-6) would work
May 24, 2014

algebra
r = .05/12 = .004167 interest per payment 1+r = 1.004167 n = 12*40 = 480 number of payments amount = 150 [ 1.004167^480 -1 ]/.004167 = 150 [7.3584 - 1 ]/.004167 = $ 228,884.71
May 24, 2014

Algebra 1
Perhaps you mean ???? [ 6w^2 + 11w - 7 ] / [ 6w - 3 ] (2w-1)(3w+7) / [3(2w-1)] (3w+7)/3
May 24, 2014

Precalculus
y = 8/x x^2 + 4 (64/x^2) = 68 x^4 - 68 x^2 + 256 = 0 let z = x^2 z^2 -68 x + 256 = 0 (z-64)(z-4) = 0 z = 64 or 4 so x = 2 or -2 or 8 or -8 if x = 2, y = 4 if x = -2, y = -4 if x = 8, y = 1 if x = -8, y = -1
May 24, 2014

Math
die a-> 1 2 3 4 5 6 die b 1 2 3 4 5 6 36 boxes label them for the sum of number above and to the left eg 2 3 4 5 ....7 3 4 5 7 ....8 4 5 ........9 etc Now for example 6 of the boxes contains a sum less than 5 that means 30/36 are greater than five of course 30/36 = 5/6
May 24, 2014

math
a = apples b = bananas = 2a a + 2 a = 45 3 a = 45 a = 15 b = 2 a = 30
May 24, 2014

Precalculus
but I have -16 x^2 -200 x = 600 so 16 x^2 + 200 x + 600 = 0 x = -7.5 or -5 check -7.5 16(7.5)^2 -200(7.5) +600 900 - 1600 + 600 zero, it worked for me
May 24, 2014

Algebra
amplitude is 2 when theta = pi/2 we have sin 2 pi so period is pi/2 A.
May 24, 2014

math
but if you really mean what you said,(which I doubt) divide by (1/4) that is 4 times or 500%
May 24, 2014

math
100 * (1/4) = 25%
May 24, 2014

PHYSICS
8 sin 30 + 8 sin (180-120) 4 + 8 (.866) = 4+6.93 = 11 N In other words none of the above I bet you mean 30 and 150 with x axis in which case C
May 24, 2014

Physical sciences
-50* 1.6*10^-19 = -80*10^-19 = -8*10^-18 C
May 24, 2014

maaattthhhh
http://www.mathportal.org/calculators/statistics-calculator/descriptive-statistics-calculator.php mean = 23.375 median = 22 mode = 26 so the last choice you listed 37 - 25 = 12 37 is a long way from the others.
May 24, 2014

physics
You are welcome.
May 24, 2014

physics
tan theta = 3/100 so sin theta = .0299865 -500 (.0299865) = -14.99 they defined y as up so it is negative
May 24, 2014

physics
LOL, the way MathMate did it is a lot easier :)
May 24, 2014

physics
The total energy at the top of the trajectory is the same as was stored in the spring (1/2)kx^2 Total energy at top where v = 0 = (1/2) u^2 + m g h we can find u, horizontal velocity easily u = 24.7 m/2.72 s = 9.08 m/s but Vi, initial speed up is easy too tan 55.8 = Vi/u Vi = ...
May 24, 2014

Algebra
a^(-1.5) ?
May 24, 2014

physics
say the mass is 1 and the length is 1 if the length were 0.98, the volume would be .98^3 = .941 then if the mass were 1.03 density = mass/volume = 1.03/.941 = 1.094 or 9.4 percent greater
May 24, 2014

Physics
Volts is not power Amps is not power WATTS is power (volts times amps) watt hours is energy, not power so it has to be 10 kW which is very high, let me see 220 Volts * 50 amps = 11,000 Watts = 11 kW well this is a pretty hefty oven. I could not run two of them in my house :)
May 23, 2014

math
All the y values are positive the bottom of the V is at (0,0) Hey just sketch the x and y points !
May 23, 2014

math
what is that symbol? absolute value? y = |-x| is the same as y = |x| x y -3 3 -2 2 -1 1 0 0 1 1 1 2 etc. looks like V
May 23, 2014

math
slope is NEGATIVE 1/3
May 23, 2014

math
it goes through (0,5) and (15,0) I do not know what you mean by coordinates or where those numbers come from
May 23, 2014

math
no, it goes down to the right
May 23, 2014

math
no graph the line when x = 0 , y = 5 when x = 15 , y = 0
May 23, 2014

Physics
You are welcome :)
May 23, 2014

Physics
i = charge /second 5.6 = 116/t t = 116/5.6 = 20.7 call it 21 s
May 23, 2014

Physics
You are welcome.
May 23, 2014

Physics
amps is charge per second coulombs/seconds n C /n s so 1.5 C/1.5 s
May 23, 2014

Math
yes
May 23, 2014

Math
t = k/r 2 = k/67 k = 134 (which happens to be the distance) t = 134/r t = 134/55 t = 2.436 hours
May 23, 2014

Science
weight = f ( vitamin A) weight is dependent on vit A hypothesis the weight of the rats depends on how much vitamin A they get in their diet.
May 23, 2014

Math
Carla, Ms Sue told you to type them in order, then look at the middle.
May 23, 2014

Math
even number, average of the two middle ones
May 23, 2014

Maths
y = k/x 2 = k/8 k = 16 y = 16/x a^2-b^2 = (a-b)(a+b) always
May 23, 2014

Algebra
1 2 3 4 5 6 * * 2/6 = 1/3
May 23, 2014

Math
You are welcome :)
May 23, 2014

Math
If c = .2 n = 6/.2 = 30 so sold 25 for .3 so got 25*.3 = 7.5 sure enough
May 23, 2014

Math
1.25 * 6 = 7.5 profit = 1.5 let cost per box = c sales price = s = c+.1 bought n gave away 5 sold (n-5) cost = n c = 6 so n=6/c sales = (n-5)(c+.1) so (n-5)(c+.1) - 6 = 1.5 (6/c -5)(c+.1) = 7.5 6 -5c + .6/c -.5 = 7.5 -5c + .6/c = 2 -5 c^2 -2 c + .6 = 0 5 c^2 + 2 c -.6 = 0 c...
May 23, 2014

Algebra 1--Please, help me!
Incomprehensible. Typos?
May 23, 2014

Algebra 1
look for vertex of the parabola in algebra. (You would be able to do it much faster with calculus or physics) t^2 - 9.25 t - 1.875 = -h/16 t^2 - 9.25 t = -h/16 + 1.875 t^2-9.25t+4.265^2 = -h/16 +1.875+21.39 ( t-4.265)^2 = -1/16( h - 372.25) So, I think it is d and at 4.265 ...
May 23, 2014

Math
Nah, I do not have to do an experiment. there are four equally likely outcomes.
May 23, 2014

Science
http://www.jiskha.com/display.cgi?id=1400875475
May 23, 2014

having trouble please help?
Do you think we should allow them ... starts out biased (should we throw them in jail or merely hang them?) "syrupy soft drink" implies bias ---> Should there be a ----- no bias healthy versus unhealthy ? certainly biased
May 23, 2014

Calculation in chemistry
2 grams of M in 8 grams of MOn where M is metal symbol and n is O atoms per metal atom There were 8-2 = 6 grams of O in MOn 6 grams of O * (1 mol of O/16 grams) = 6/16 = 3/8 mol of O which is 3/16 mol of O2 so 3/16 mol of O2 combines with 2 grams metal so .5 mol of O2 combines...
May 23, 2014

Math
draw a sketch The bottom has height 7 The top has height 9 The left side is at 4 the right side is at 8 what is missing is the upper right at (8,9)
May 23, 2014

science
v = g t 20 = 9.81 t t =2.03 seconds h = (1/2) g t^2 h = 4.9 (2.03)^2 h = 20.4 meters
May 23, 2014

Science
same Justin the whole tie amount of tissue needed depends on type of tissue used pulse rate is the dependent variable and I do not know why you say it is not write as: pulse rate = f(music type) see definition:http://dictionary.reference.com/browse/dependent+variable
May 23, 2014

physics
final momentum = 4.7 (1000+2200)=15040 initial momentum = 1000 v so v = 15.04 m/s
May 23, 2014

physics
a liter is 10^3 = 1000 cm^3 so we have 22.4 * 1.5 = 33.6 moles of gas at 273 deg K and 100 kPa P V = n R T n and r remain the same so P1V1/T1 = P2V2/T2 100 (1500)/273 = P2 (1000)/253 P2 = 139 kPa ABSOLUTE pressure - 100 KPa for gage = 39 k Pa gage
May 23, 2014

Algebra
Here is a combinations and permutations calculator to get permutations, the "Is order important" box should be YES to get combinations the is order important box is NO http://www.mathsisfun.com/combinatorics/combinations-permutations-calculator.html Here you are ...
May 22, 2014

HELP!!!! MATH
LOL, I would have had the 15 degrees from horizontal, living on the bleak ocean where at least a seven to one scope is required.
May 22, 2014

geometric
No C) foot
May 22, 2014

geometric
Given those English unit choices, I think foot is the correct choice. A standard shipping container is 20 feet long but most these days are double that, 40 feet long.
May 22, 2014

Physic
x = A sin w t v = A w cos wt a = -w^2 A sin wt = -w^2 x so A w = .438 or w = .438/A A w^2 = 1.53 so A *(.438)^2/A^2 = 1.53 so 1.53 A = .192 A = .125 m
May 22, 2014

One last math question
1/2 - 1/9 = 9/18 -2/18 = 7/18 18 * 7/18 = 7 2/3 - 1/6 = 4/6 - 1/6 = 3/6 = 1/2 9 * 1/2 = 9/2 so 7+9/2 = 14/2+9/2 = 23/2 then 23/2 / (5/2) = 23/5 = 4 3/5
May 22, 2014

math
Draw a sketch of the ten tables in a row. Only two people can sit at the middle ones because the ends are up against the next tables. for the two tables on the end, the usual two can sit plus one on each end of the whole line
May 22, 2014

math
20* .3 + 15 * .05 = 6 + .75 = 6.75 ============================ the middle 8 tables only seat 2 but the two end tables seat 3 8*2 + 2*3 = 16 + 6 = 22
May 22, 2014

algebra
h(m+1) = 2 f f = h(m+1)/2
May 22, 2014

5th Grade ADV. Math
You are welcome :)
May 22, 2014

5th Grade ADV. Math
another way A plays the other 3 B plays only C and D more because has already played A that is 2 more C plays only D because has played A and B so one more 3+2+1 = 6 again plus that last game = 7
May 22, 2014

5th Grade ADV. Math
That did not line up right, but I hope you see the point
May 22, 2014

5th Grade ADV. Math
Whoops, you do not do it that way in grade 5 Make a grid ___A___B___C___D A --- * --* --* B----------*---* C--------------* D ------------- The stars are the games played in the first round You see there are 6 of them then the final is 7
May 22, 2014

5th Grade ADV. Math
combinations of four taken two at a time = 4C2 = 4!/[ 2! (4-2)! ] = 4*3*2 /(2 * 2) = 6 games before the final so 7
May 22, 2014

calculus
If you draw this you see you want the integral from y =0 to y = 3 of -x dy y = ln(1-x) e^y = 1-x -x = e^y -1 so integral from 0 to 3 e^y dy - dy e^y - y at 3 = e^3-3 e^y - y at 0 = 1 so e^3 - 4 about 20 - 4 = 16
May 22, 2014

pre-algebra
when x increases by 2, y always decreases by 1 so m = slope = -1/2 y = -x/2 + b put in a point like (4,0) 0 = -4/2 + b so b = 2 so y = -x/2 + 2
May 22, 2014

Math
You are welcome.
May 22, 2014

Math
The top of the first rainbow will not fit into the bottom of the one above it.
May 22, 2014

math
tan 15 = d/495
May 22, 2014

math
You are welcome :)
May 22, 2014

math
yes -10 + 8 = -2 yes 9 - (-9) = 9+9 = 18
May 22, 2014

Algebra where did I go wrong
5! / [ 2! (5-2)! ] 5!/(2! 3!) 5 * 4 * 3 *2 /(2 * 3 * 2) 10
May 22, 2014

math
combine LIKE terms 8x + 6 x = 14 x 2 = 2 so 14 x + 2
May 22, 2014

MATH
You are welcome.
May 22, 2014

MATH
L * w = 225 2 L + 2 w = 60 so L + w = 30 and w = 30-L L (30-L) = 225 30 L - L^2 = 225 L^2 -30 L + 225 = 0 (L-15)(L-15) = 0 L = 15 meters
May 22, 2014

SCIENCE HELP !!
Do muskrats eat catfish? If so, they might get hungry.
May 22, 2014

college calculus
.5 = e^-k(5730) ln .5 = -.6931 = - 5730 k k = 1.2097*10^-4 .45 = e^-1.2097*10^-4 t ln .45 = -.7985 = -1.2097*10^-4 t t = 6601 years
May 22, 2014

Algebra
I can not. { x-[ -2 + sqrt(160) ]/6} * {x+[ -2 + sqrt(160) ]/6}
May 22, 2014

History
I guess I would go with Midway of the choices above. He certainly did not buy Alaska from Canada :)
May 22, 2014

History
seward's folly
May 22, 2014

History
Lots of things, including buying Alaska (Seward's Folly)from Russia :)
May 22, 2014

algebra/ Can see I am right
arrangements of three letters: 26^3 = 17576 but subtract 241 17335 times 1000 17,335,000
May 22, 2014

Math please check my answers?
237 (1.02)^t is correct
May 22, 2014

Math please check my answers?
slope = (83- -29) / (-2 - -10) = 112/8 = 14 which is indeed positive :)
May 22, 2014

appliance repair
Although E is the answer they are looking for, E is much more commonly used for the electric field strength which is Volts per meter. The question is poorly written.
May 22, 2014

Algebra
You are welcome. This is a good example to diiferentiate between combinations and permutations Combinations of 31 taken 5 at a time would be 31! /[ 5! (31-5)! ] That takes into account all the different groups of five you can make, but does not order the five for specific ...
May 22, 2014

Algebra
It is not combinations because the order matters, it is permutations. (Joe could be either president or vice president for example and those are not the same) 31!/(31-5)! = 31!/26! = 31*30*29*28*27 = 20,389,320
May 22, 2014

Evaluate the expression.Algebra
9*6*3 /(6*4) 9*3/4 27/4
May 21, 2014

geometry
2 x + 10 = 80 2 x = 70 x = 35
May 21, 2014

physics
used up 67,500 + 290,000 - 30,000 Joules
May 21, 2014

math 6 probaility
there are four possible outcomes of flipping a pair h h h t t h t t so you should get h h 60/4 = 15 times we got it 24 or 9 more times than expected
May 21, 2014

math 6 probability
It is a whole new game after the first play. 75% IF you had said what is the probability of him hitting two in a row, that would be .75*.75 BUT that is NOT what you were asked.
May 21, 2014

math
up 4 in horizontal 10 so 4/10 = .4
May 21, 2014

math
do the others the same way
May 21, 2014

math
That was using the distributive property. You can also use FOIL if you know it.
May 21, 2014

math
4. (3x + 4)(x – 2) (1 point) 3x(x-2) + 4(x-2) 3 x^2 - 6 x + 4x - 8 3 x^2 -2x - 8
May 21, 2014

math
2 x * 10 x = 2*10 * x *x = 20 x^2 2. –3m(m + 8) = -3 m(m) + -3m(8) = -3m^2 - 24 m
May 21, 2014

math 6 probability
no, it hit the red section 225 times out of 1125 times spun
May 21, 2014

math 6 probability
5*225 = 1125
May 21, 2014

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