Friday

April 29, 2016
Total # Posts: 26,095

**Math**

2.5 gal (4 qt/gal) = 10 qt
*January 12, 2016*

**math help**

70/2
*January 12, 2016*

**math**

3 * 5.5 = 16.5 = 17
*January 12, 2016*

**math**

if n is 12 then n+6 is 18
*January 12, 2016*

**Conversion**

if it is 10 seconds I suspect 110 yards :) 1760 yd/mi 3600 s/h 110 yd/10 s (1 mi/1760 yd)(3600s/h) = 22.3 mi/h
*January 12, 2016*

**PHYSICS 1**

if your angles are math convention, counterclockwise from x axis and not compass angles from north then just use what Steve gave you for A Ax = 145 cos 190 Ay = 145 sin 190 etc
*January 12, 2016*

**math**

4.5 / 60
*January 12, 2016*

**6 is right**

You got one, enough already
*January 12, 2016*

**Random selections?**

4 C Hey have you just picked random answers?
*January 12, 2016*

**Math**

3D wrong, solution is y = 0 but what about 0 x = 0 in 2C ?
*January 12, 2016*

**Math**

2. Same mistake 5 x = + 40
*January 12, 2016*

**Math**

1) no 16 - 9 = +7
*January 12, 2016*

**Please try to do these before asking**

We are here to help, not to do your work for you. Try first
*January 12, 2016*

**math**

I just answered this http://www.jiskha.com/display.cgi?id=1452632926
*January 12, 2016*

**Math**

2 L + 2 w = 30 L = 4 w ======================== 2(4 w) + 2 w = 30 10 w = 30 w = 3 so L = 12 and A = 3 * 12 cm^2
*January 12, 2016*

**Language Arts - Please Help!**

1. I would pick B. It follows line by line the poem. 6. It says rhythym, not rhyme 7. I have no idea. 9. the second half can stand independently.
*January 12, 2016*

**Grade 5 math**

16 * 75 = ??? cm divide cm by 100 to get meters
*January 12, 2016*

**msth**

10 x + y x = 3+5 = 8 8 = 2 y so y = 4 80 + 4 = 84
*January 12, 2016*

**Math**

yes, you are welcome.
*January 12, 2016*

**Math**

2.6 + 6.03 + 2.6
*January 12, 2016*

**Algebra**

I do not see your answers.
*January 12, 2016*

**maths**

LOL you need more than that side side side? side angle side? angle side angle? or something
*January 12, 2016*

**Math**

1. yes 2. yes 3. no 9-12 = ? 4. five less is x-5 it can be equal to 9 or x-5 = 9 or it can be greater than 9 or x-5>9 so x - 5 >/= 9 which I believe is A
*January 12, 2016*

**Algebra**

y = (-3/4) x + 2 y = (+3/4) x + 2 slopes are -3/4 and +3/4 if they were the same, then parallel if one were - 1/the other, then perpendicular so neither
*January 12, 2016*

**math**

45 x = 100 + 25 x
*January 12, 2016*

**SS HELP!**

Which answer uses the word "Rights".
*January 12, 2016*

**SS HELP!**

1. No 2. yes 3. yes 4. I am not familiar with Georgia constitution but wonder if the conduct negotiations with Germany
*January 12, 2016*

**History**

neither
*January 12, 2016*

**History**

The assumption that "Most people know ... " is a hint of bias of course.
*January 12, 2016*

**History**

No, but we do not see what is in the article you read.
*January 12, 2016*

**Math**

yes
*January 12, 2016*

**Social studies**

Look at a globe or map !!!!!
*January 12, 2016*

**Social studies**

I would not pick d. That covers all of Europe and Africa :)
*January 12, 2016*

**Social studies**

For example: Israel, Jordan, and Lebanon. Saudi Arabia, Iraq,Iran Egypt, Turkey. ============================= find them :) by the way I am sure that they are all south of the arctic and north of the south pole, but that does not locate them satisfactorily.
*January 12, 2016*

**Math**

13891885.31 approximately
*January 12, 2016*

**Math**

220/8 = 27.5 225/5 = 45 do the others the same way and see which is the most words/minute
*January 12, 2016*

**Math**

Which ratio is equivalent to 4/16 A. 2:4•• B. 6 to 20 C. 8:32 D. 12 to 64 ===================== no 2/4 = 1/2 4/16 = 1/4 the only one with a denominator four times the numerator is 8/32 C.
*January 12, 2016*

**I am not sure**

I guess I would start with a Google search, maybe on napkin dye safety or just paper dye safety or something. I am not sure they are any more dangerous though.
*January 12, 2016*

**Wait a minute**

What am I thinking? The RANGE is the amount in the account. The DOMAIN is the date :)
*January 12, 2016*

**Algebra 2**

However it would not include 51.473 so 100 * entry is integer
*January 12, 2016*

**Algebra 2**

Why would it be integers? $ 51.47 for example I suppose it could be negative if your bank has some sort of policy covering your bad checks.
*January 12, 2016*

**math**

2 x^2 = 100^2 ? x^2 = 5,000 x = 70.7 feet if you want the sides of a square with 100 ft diagonal
*January 12, 2016*

**I do not understand**

Is this the diagonals of a square or something and you want the sides?
*January 12, 2016*

**Math**

(3/7)(3/3) = 9/21 sure enough :)
*January 12, 2016*

**Math**

Cute problem :)
*January 12, 2016*

**Math**

log 2 (-3sin x) -log2 (cos^2) x =1 log 2 [ -3 sin x/cos^2 x = 1 -3 sin x / cos^2 x = 2^1 = 2 sin x/cos^2 x = -2/3 well the sin must be negative so x is between pi and 2 pi well try sin x/(1 - sin^2 x ) = -2/3 let z = sin x z/(1-z^2) = -2/3 3 z = -2 + 2 z^2 2 z^2 - 3 z - 2 = 0...
*January 12, 2016*

**Math**

5h - 9 = -16 + 6h subtract 5 h from both sides - 9 = - 16 + 1 h add 16 to both sides 7 = h the end
*January 12, 2016*

**Social studies**

LOL - I would have picked A. Jews, Christians of all sorts in Syria and Lebanon and Armenia (if any survive) and Egypt .... But probably C is the expected answer.
*January 12, 2016*

**of**

1 12/60 hours = 1.2 hours 50 km/h * 1.2 h = 60 km
*January 12, 2016*

**math**

so A total = 32 x^2 sqrt 3/.75 so 32 x^2 sqrt 3/.75 = 19200 sqrt 3 x^2 = 450 x = 21.2 check my arithmetic
*January 12, 2016*

**math**

If you draw it you can see that An = An-1 * .25 or a , .25 a , .25^2 a etc we have a sum of a geometric series here with r = .25 see http://www.mathsisfun.com/algebra/sequences-sums-geometric.html the first term a is area of triangle with 8 x sides a = 2 * 4x * 4x sqrt 3 = 32 ...
*January 12, 2016*

**machanics**

G m M/r^2 = m v^2/r so G M/r = v^2 M = (4/3)rho r^3 G(4/3) rho r^2 = v^2 T = 2 pi r/v v^2 = (2 pi)^2 r^2/T^2 so G(4/3) rho = (2 pi/T)^2
*January 12, 2016*

**Physics**

450 * 2 = 900 Joules
*January 12, 2016*

**Physics**

Depends if they are vertical and symmetric about the cg if so 100/8
*January 12, 2016*

**Physics**

F = .5 m g = .5 * 35 * 9.81 Newtons
*January 12, 2016*

**Physics**

PE = 31 * 9.81 * 1.92 Joules at bottom (1/2) m v^2 = PE suspect C wants work done which is the same as the PE again
*January 11, 2016*

**yes**

If the tree were INCREASING there would be less CO2 released to the atmosphere. So you are right.
*January 11, 2016*

**math**

300/330 = .91 1 - .91 = .09 .09 * 100 = 9 %
*January 11, 2016*

**Physics**

with F = m a f cos 38 = .788 F again a = change in velocity/time = 2.2/time but time = distance/average speed = 3.4 /1.1 = 3.09 seconds so a = 2.2/3.09 = .712 m/s^2 so .788 F = 12 * .712 F = 10.8 Newtons (remarkable)
*January 11, 2016*

**Physics**

You can do it with work if you wish or you can do it with F = m a with work work done = Force in direction of motion * distance Force in direction of motion = F cos 38 = .788 F work done = .788 F * 3.4 meters = 2.68 F Joules that is the increase in kinetic energy (1/2) m v^2...
*January 11, 2016*

**so what is the question**

Are you doing geometric sequences? Fractals ? whatever ?
*January 11, 2016*

**us history**

If you go east from Florida you go to Africa.
*January 11, 2016*

**Math watch addition**

45 min for lunch so 6 hrs and 85 minutes I hour = 60 minutes so you have 7 hours 20 minutes I think 25 minutes
*January 11, 2016*

**Math**

driving 6.5 hr gas 1/6 hr lunch 3/4 hr sum = 7.41666666... hr = 7 hours + .416666.. * 60 min = 7 hours and 25 minutes so that is 5 hours to noon + 2 hours 25 minutes before noon sounds like 9:35 am
*January 11, 2016*

**Physics**

F up = 119 sin 31 = 61.3 N F x = 119 cos 31 = 102 N normal force = m g - 61.3 = 22.5*9.81 - 61.3 = 159 N friction force = .72*159 = 115 N They did not ask for the horizontal acceleration?
*January 11, 2016*

**math**

x of them were there x/4 after an hour x/4 - 20,000 after two hours that is x/12 so x/12 = x/4 - 20,000 3 x/12 - x/12 = 20,000 x/6 = 20,000 x = 120,000 big game
*January 11, 2016*

**math**

if 3 + 4 i is a solution then its complex conjugate 3 - 4 i is also a solution because when you solve a quadratic for example (- b +/- sqrt(b^2-4ac))/2a if b^2-4ac is negative then you have -b + number*i and -b - same number*i They come in complex conjugate PAIRS
*January 11, 2016*

**better link**

http://www.khanacademy.org/science/chemistry/acid-base-equilibrium/copy-of-solubility-equilibria-mcat/v/solubility-product-constant-from-the-solubility
*January 11, 2016*

**Dr Bob - Kayla needs you :)**

I am just plodding through this
*January 11, 2016*

**math/ chemistry**

so you have 1.72 * 10^-3 g /100 mL which is 17.2 * 10^-3 g/liter ten times as much because 1000mL is 1 liter how many mols is 17.2 * 10^-3 g 17.2*10^-3 g/L / 62 g/mol = .277 * 10^-3 mol/Liter 2.77 *10^-3 mols/Liter or M Now to get from there to Ksp I suggest looking at https...
*January 11, 2016*

**math/ chemistry**

there are 1000 cubic centimeters which is 1000 grams of water (close enough) in a liter which is 10 cm * 10 cm * 10 cm now I do not know what chemical you are using that is 62 grams/mol You better give me the whole problem carefully because unless you know M, the molarity, you...
*January 11, 2016*

**Math forum link**

http://mathforum.org/sum95/suzanne/whattess.html
*January 11, 2016*

**yes**

Yes, yes, yes I love it !!!
*January 11, 2016*

**Math**

4 + 5 = 9 4/9 5/9
*January 11, 2016*

**BUT**

which of those is the key to FAILURE of modern civilizations?
*January 11, 2016*

**History**

Nile, Indus, Tigris, Euphrates, Yellow, Mekong ........ Oh, Belarus Volga, Oxus ....
*January 11, 2016*

**Math**

4 s + 6 h = 52 2 h = 1 + s so 6 h = 3 + 3 s ========================= ====================== so 4 s + 3 + 3 s = 52 7 s = 49 s = 7 well that was easy
*January 11, 2016*

**Now way no way no way at all**

Now how can I be 10 years old and 4 years before birth at once :( Those are two parallel lines, they never cross. THERE IS NO SOLUTION !!!!
*January 11, 2016*

**yes**

yes
*January 11, 2016*

**us history**

I love using Mother Jones as my primary source.
*January 11, 2016*

**us history**

Google Mother Jones Haiti Napoleon Louisiana I already used it today :)
*January 11, 2016*

**us history**

Google will settle that in no time :)
*January 11, 2016*

**Math**

well, 1/4 of what it all cost last week so'last week 8000 + 2040 + 8400 = 18,440 so this week 18,440/4
*January 11, 2016*

**Physics**

d is the same for both I will do F d^2 so you see which wins :) gravity Fg * d^2 = G M1 M2 = 6.673*10^-11 * (1.673*10^-27)^2 = 18.7 * 10^-65 electrostatic Fe d^2 = k Q1Q2 = 9*10^9 (1.6*10^-19)^2 = 23 * 10^-29 it is 10^-65 for gravity and 10^-29 for electricity Electricy wins ...
*January 11, 2016*

**Physics**

if a = 0 F = m g = (91)(9.8) = 892 N a = 1.7 m/s / 1.07 s = 1.59 m/s^2 Fup - mg down = m a = 91(1.59) Fup = 892+145 = 1037 N constant speed, no acceleration so back to m g = 892 892 -91(1.67/t) and 0 = 1.7 - 1.67 t t = 1.02 seconds to stop so 892 - 91 (1.67/1.02) = 743 N
*January 11, 2016*

**physics**

a = change in v / change in time = (12-2)/2 = 5 m/s^2 m Vi = 1500 * 2 = 3000 kg m/s m Vf = 1500 * 12 = 18,000 kg m/s 18,000 - 3000 = 15,000 kg m/s F = rate of change of momentum = m a do both ways F = 15,000/2 = 7,500 N or F = 1500 * 5 = 7,500 N remarkable LOL Now What Newton ...
*January 11, 2016*

**us history**

I do not think so, but you are entertaining. I am from Cape Ann where we had few slaves and 15 year old girls helped their mothers.
*January 11, 2016*

**us history**

The wrong ones are a riot !
*January 11, 2016*

**Math-Algebra**

Just try them, and did you catch the error in your previous problem way below, scroll down as for this 2(4) -5(-3) = 8 + 15 yes, ok 2(-5/3) -5(5) = 10/3-25 NO, way too small 2(5)-5(3/4) easy bigger than 6 etc
*January 11, 2016*

**us history**

yes
*January 11, 2016*

**us history**

I do not think so. You better Google Shay's rebellion. The middle two possible answers are a pretty good hint.
*January 11, 2016*

**Geometry**

LOL, just draw tow isoceles triangle, one equilateral 60 60 60 , one 90 45 45
*January 11, 2016*

**Geometry**

Two congruent triangels are similar : ALWAYS Two squares are similar : ALWAYS Two isosceles triangles are similar : SOMETIMES Two obtuse triangles are similar : SOMETIMES Two equilateral triangles are similar ALWAYS
*January 11, 2016*

**Geometry**

X^2 +(X^2 + 4 X + 4 ) = X^2 +8 X + 16 ?????? x^2 - 4 x - 12 = 0 (x-6)(x+2) = 0 x = 6
*January 11, 2016*

**math**

Hey, give me the whole problem the first time. When I did the one below you did not say angle was right angle at B
*January 11, 2016*

**math**

|AC|^2 = 40^2 + 45^2 = 1600+2025 so |AC| = 60.2 meters Now this is the same as the problem below this one draw a line through A perpendicular to AC Now with trig the problem is trivial, but I will assume you must stick to geometry let AP = x then CP = (60.2 - x) call the ...
*January 11, 2016*

**math**

I suspect you tried to paste a picture here. That will not work. I do not see it. However you need the line perpendicular to AC through point B If you have AC in algebra y = m x + b then the slope of BP is m' = -1/m and it goes through B so find y = m' x + b' for ...
*January 11, 2016*

**disagree**

I would subtract first to eliminate y 65 y is in both
*January 11, 2016*

**physics**

P V/T = n R n and R are the same for both P1 V1/T1 = P2 V2/T2 P1 V1 T2 = P2 V2 T1 T2 = T1 (P2/P1)(V2/V1) luckily using degrees Kelvin so T2 = 300 (3.5/2)(12/15)
*January 11, 2016*