Saturday

April 19, 2014

April 19, 2014

Number of results: 94,667

**math**

6 3 / 5 = 6 * 30 / 30 + 3 * 6 / 30 = 180 / 30 + 18 / 30 = 198 / 30 3 5 / 6 = 3 * 30 / 30 + 5 * 5 / 30 = 90 /30 + 25 / 30 = 115 / 30 6 3 / 5 + x = 3 5 / 6 198 / 30 + x = 115 / 30 x = 115 / 30 - 198 / 30 x = -83 / 30
*Wednesday, November 9, 2011 at 6:26am by Anonymous*

**MATH**

Right. 5/6 = 25/30 1/5 = 6/30 4/6 = 20/30 25/30 + (6/30)t = 20/30 (6/30)t = (20/30) - (25/39 (6/30)t = -5/30 t = (-5/30) / (6/30) t = (-5/30) * (30/6) t = -150/180 t = -15/18 = -5/6
*Friday, December 10, 2010 at 5:57pm by Ms. Sue*

**bobpursly, check please,math**

do you mean like this: 720/(V-30) + 720/(V+30) = 10 Get a common denominator of (v-30)(v+30) then multiplying both sides by that, then (v-30)(v+30)X 720(V+30) + (v-30)(v+30) X 720(V-30)=(v-30)(v+30)X 10(v-30)(v+30) then multily out, and solve for v. 720(v-30)+720(v+30)=10 720v...
*Sunday, February 25, 2007 at 11:04pm by jas20*

**11**

h0 = 30 h1 = .6*30 h2 = .6^22 * 30 h3= .6^3*30 hn = .6^n*30 h10 = .6^10 * 30 = .2
*Monday, March 18, 2013 at 6:22pm by Damon*

**maths**

1/6 = 5/30 3/5 = 18/30 1/5 = 6/30 Altogether he has given them 29/30, leaving 1/30 of 150 gms. 1/30 * 150 = 150/30 = 5 grams
*Sunday, November 24, 2013 at 2:31pm by Ms. Sue*

**algebra probl 4**

actually, in the absence of parentheses, multiplication and division proceed left to right 30/6*5 = (30/6)*5 = 5 * 5 = 25 30/(6*5) = 30/30 = 1
*Thursday, October 6, 2011 at 8:10pm by Steve*

**calculus**

If we let r = rms of f(t), then 4r^2 = Int(15 - 15e^-1/2t)[0,4] = 15t + 30e^(-t/2)[0,4] = [60 + 30/e^2] - [0 + 30] = 60 + 30/e^2 - 30 = 30 + 30/e^2 =34.06 so, r = 2.92 see wikipedia on root mean square
*Sunday, November 20, 2011 at 4:40pm by Steve*

**algebra**

h = -1 6 t ^ 2 + vt v = 120 h = - 16 t ^ 2 + 120 t h = - 4 * 4 t ^ 2 + 4 * 30 t h = 4 t ( - 4 t + 30 ) 0 = 4 t ( - 4 t + 30 ) obviously solution : t = 0 ( initial point ) and - 4 t + 30 = 0 - 4 t = - 30 - 4 t / 4 = - 30 / - 4 t = 30 / 4 = 2 * 15 / ( 2 * 2 ) = 15 / 2 = 7.5 s
*Tuesday, March 4, 2014 at 8:51am by Bosnian*

**math**

a+1/6=3/5 subtract 1/6 on each side: a+(1/6)-(1/6)=(3/5)-(1/6) a=(3/5)-(1/6) The common denominator is 30, so a=(3*6/30 - 1*5/30) =(18-5)/30 =13/30
*Tuesday, December 14, 2010 at 11:33pm by MathMate*

**english**

x+30+90 you have to subtract 30 from both sides and the answer is X=60
*Monday, March 7, 2011 at 6:12pm by bluestarr*

**math**

11/15+7/10-2/5 First, you need to find the common denominator. Since 30 is the smallest number divisible by 15, 30, and 5, then 30 is the common denominator. 11/15 = 22/30 7/10 = 21/30 2/5 = 12/30 22/30 + 21/30 = 43/30 43/30 - 12/30 = 31/30 = 1 1/30
*Monday, July 14, 2008 at 9:01pm by Ms. Sue*

**Calculus-Rationalizing Denominator**

(a+b)(a-b) = a² - b² (√6 + 2)(√6 - 2) = (√6)² - 2² = 6-4 = 2 So, you end up with (√6 - 2)/2 = √6/2 - 1 Your lack of parentheses got you the wrong answer. (√30 + 3√3)/((√30 - 3√3) * (√30 + 3√3)/(√30 + 3&#...
*Monday, October 3, 2011 at 9:34pm by Steve*

**English**

Hello. I apologize for bothering you with similar questions but I'm supposed to explain the difference in tenses in the following English sentences taken from the original English press. Will you help me please? The context is absolutely the same, but the tenses are different...
*Sunday, February 5, 2012 at 12:45pm by Ilma*

**algebra**

t =(-b}ã(b^2-4ac))/2a t =(-7}ã(7^2-4(15)(-2)))/(2(15)) t=(-7}ã(49 +120))/30 t=(-7}ã169)/30 t=(-7}13)/30 t=(-7+13)/30 = 6/30 = 1/5 t=(-7-13)/30 = -(20/30) = -(2/3) Therefore, t = 1/5 & -(2/3)
*Thursday, July 28, 2011 at 11:51am by Mithra*

**Chemistry**

..............HA + NaOH ==> NaA + H2O ..............x.....0........0.....0 add................30 mmols.......... change.......-30...-30.....+30.....+30 equil........x-30....0......+30....+30 pH = pKa + log (base)/(acid) 4.25 = 3.886 + log(30/(A) Solve for A. I found 12.98; ...
*Saturday, April 23, 2011 at 9:21pm by DrBob222*

**Calc**

I am going to assume that the heat flow into the body is proportional to the difference between body temp T and 30 and rate of change of T is proportional to heat flow . dT/dt = k (30-T) try T = -ae^-kt + 30 that is 30 at t-->oo and 30-a at t = 0 so 0 = -a e^-10k + 30 15= -...
*Thursday, January 6, 2011 at 11:55pm by Damon*

**geometry**

Let the acceleration (really deceleration) be a so v = at + c when t=0 , v = 30 30 = 0 + c, --> c=30 so v = at + 30 when t=2, v = 16 16 = 2a + 30 2a = -14 a = -7 v = -7t + 30
*Wednesday, December 7, 2011 at 8:35pm by Reiny*

**Calculus**

How do i find the derivative of f(t)= 20- 30/rooot 9 + t^2 heres how i did it f'(x)= 20' - 30/root(9+t^2) ' = 0 - 30/root(9+t^2) ' (Quotient rule) f'(x)= 30' (root(9+t^2) - 30(root(9+t^2) ' f'(x)= -30(0.5(9+t^2)^-0.5) (2t) the answer at the back of the book is 30t/(9+t^2)^1/2...
*Saturday, February 27, 2010 at 3:03pm by LALA*

**math**

9/10 +2/3 We must change these to equivalent fractions with the same denominator. 9/10 = 27/30 2/3 = 20/30 27/30 + 20/30 = 47/30 = 1 17/30
*Sunday, January 6, 2013 at 3:29pm by Ms. Sue*

**math (plz help)**

1) Numbers of seats in rows in Theater A: RA=FA+(n-1)*4 FA=Numbers of seats in first row=30 n-number of row RA=30+(n-1)*4 first row has 30 seats second row has: 30+(2-1)*4=30+1*4=30+4=34 seats third row has: 30+(3-1)*4= 30+2*4=30+8=38 seats fourth row has: 30+(4-1)*4=30+3*4=30...
*Monday, March 14, 2011 at 7:21pm by Anonymous*

**math**

(5/6) + (1/10) = (25/30) + (3/30) (25/30) + (3/30) = 28/30 = 14/15
*Wednesday, May 4, 2011 at 6:22pm by Ms. Sue*

**math**

30 is a common multiple of all the denominators 12/30 5/30 10/30 now order them
*Wednesday, December 14, 2011 at 7:23pm by Damon*

**algebra**

the number must be divisible by 2, by 3, and by 5 that is it must be divisible by 30 So the sequence is 30 60 90 ... < 500 this is an arithmetic sequence, where a = 30 and d = 30 what term is around 500 a+ (n-1)d = 500 30 + (n-1)(30) = 500 30 + 30n - 30 = 500 30n = 500 n = ...
*Wednesday, April 10, 2013 at 7:24pm by Reiny*

**algebra probl 4**

oh cuz pemdas you have to do multiplication first to get 30 so then 30/30 is 1 yep sorry i forgot thanks' 30/6*5=
*Thursday, October 6, 2011 at 8:10pm by Marko*

**fractions**

or, assuming the usual carelessness of users, if you mean 5/6 - 1/5 then use an LCD of 30 to get (5/6)(5/5) - (1/5)(6/6) = 25/30 - 6/30 = 19/30
*Monday, September 10, 2012 at 11:59am by Steve*

**Math**

1/6 = 5/30 1/3 = 10/30 2/5 = 12/40 Add the fractions and subtract from 30/30 Simplify your answer.
*Wednesday, March 6, 2013 at 5:28pm by Ms. Sue*

**algebra**

2(15) + 7(3)/30 30 + 21/30 51/30 (simplify by dividing by 3) 17/10
*Monday, August 29, 2011 at 4:35pm by Marie*

**math**

1 + 2 + 4 + 8 + ... for 30 terms a GS , where a = 1 , r = 2 ,n = 30 sum(30) = a(r^n - 1)/(r-1) = 1(2^30 - 1)/1 = 1,073,741,823 pennies
*Monday, December 3, 2012 at 8:06am by Reiny*

**4th grade**

to find equivelent fractions you cross multiply them for exmple: 5/15= 2/6 5x6=30 2x15=30 30=30
*Thursday, May 6, 2010 at 5:19pm by Sara!*

**MATH**

(81/10) - (25/6) (243/30) - (125/30) = 118/30 = 3 28/30 = 3 14/15
*Monday, October 24, 2011 at 6:29pm by Ms. Sue*

**Maths B**

It is an inverted parabola symmetric about the x=30 line. Use the form y = -a(x-30)^2 + C When x = 30, (x-30) = 0 and 45 = C When x = 0, 30 = -900a + 45 900 a = 15 a = 1/60 y = -(1/60)(x-30)^2 + 45 Multiply it out if you want it in ax^2+bx+c form
*Sunday, August 8, 2010 at 9:37pm by drwls*

**English**

When you are writing an essay that refers to two works and you are using a quote, do you (Alveraz, 30) or just put (Alveraz 30) with no comma. Thanks
*Sunday, October 3, 2010 at 7:39pm by Michael*

**6th grade math**

The common denominator is 30. 21/30 came by car 6/30 came by bus 5/30 walked That adds up to more than 1, so something is wrong here, unless some people came by a combination of means. 21/30 - 5/30 = 16/30 = 8/15 is the answer to you first question. Your second question in ...
*Tuesday, March 17, 2009 at 1:01am by drwls*

**3rd grade math**

You're right that the answer is no. 10/30 + 6/30 = 16/30 That is more than 15/30 so less than 1/2 the pie remains.
*Tuesday, December 11, 2012 at 8:16pm by Ms. Sue*

**algebra**

sides are 1/2 x , 1/5 x , 1/3 x perimeter = (1/2 + 1/5 + 1/3 ) x = 6.2 (15/30 + 6/30 + 10/30 ) x = 6.2 31x/30 = 6.2 x = 6 so 3 , 6/5, 2
*Friday, January 23, 2009 at 8:20pm by Damon*

**math/algebra**

subtract. express in simplest form 13x/30 - 4x/ 15 = factor the first denominator. Get a common denominator. Combine terms. I will be happy to critique your work. ok 13x/30 - 4x/ 15 = This is where I get lost, I know that I have to fins the LCD but when I do that it looks like...
*Sunday, July 15, 2007 at 1:29pm by Diana*

**Physics**

There is no horizontal force on the ball. So why would its horizontal velocity change? It does not, until it hits the ground or is headed or kicked. u =30 cos 30 Q : How long is it in the air? A : Twice as long as it takes to stop moving up at the top of its trajectory Q : How...
*Sunday, January 29, 2012 at 3:18pm by Damon*

**7th grade math**

30=12d Divide both sides by the co-efficient. 12/12 leaves you with d. 30/12 leaves you with 2.5 D=2.5 Check your work. 30= 12*2.5 12*2.5= 30 30=30
*Friday, November 26, 2010 at 2:22pm by Lily*

**statistics**

p = .01 binomial distribution, n = 30 A) p(k) = C(30,k) p^(k) p^(30-k) for k = 1 p(1) = [30!/(1!29!)]* .01^1 * .99^29 = 30*.01*.747 =.224 B) That would be zero or one patient. We know p(1) = .224 so find p(0) p(0) = (30!/0!30!) *.01^0 * .99^30 = 1 * 1 * .740 =.740 so the ...
*Sunday, February 17, 2008 at 6:51pm by Damon*

**physics**

d1 = 15m/s * 2s. = 30 m head start. d2 = 0.5a*t^2 = 30 + 15t 1*t^2 = 30 + 15t t^2 - 15t = 30 t^2 - 15t - 30 = 0 Use Quadratic Formula and get: t = 16.79 s.
*Monday, December 16, 2013 at 4:36am by Henry *

**Math**

-9/10 = -27/30 -1/6 = -5/30 (-27/30) + (-5/30) = -32/30 = -1 1/15
*Thursday, November 5, 2009 at 6:41pm by Ms. Sue*

**math**

30 m = 6000 Divide both sides by 30 30 m / 30 = 6000 / 30 m = 200
*Wednesday, August 28, 2013 at 7:09pm by Bosnian*

**Math**

There are many possible answers. Here are some with integers. x^2 + 11x + 30 = (x+6)(x+5) x^2 - 11x + 30 = (x-6)(x-5) x^2 - 17x + 30 = (x-15)(x-2) x^2 + 17x + 30 = (x+15)(x+2) x^2 - 31x + 30 = (x-1)(x-30)
*Wednesday, March 4, 2009 at 8:40pm by drwls*

**statistics**

Here the number of degrees of freedom is (3-1)=2. Hence the continuity correction of 0.5 is not required. The observations are 30,35 and 25, and the theoretical values are therefore (30+35+25)/3=30 Χ² =(30-30)²/30+(35-30)²/30+(25-30)²/30 =0+0.833+0.833...
*Wednesday, August 12, 2009 at 10:34pm by MathMate*

**AlgebraII-Reiny could you please check-I'm stuck**

Sikve the following by using substitution method x=3y -5 6x-18y = -30 I got this far and I'm stuck 6(3y-5) - 18y = -30 18y - 30 - 18y = -30 -30 = -30 So this doesn't make sense anymore
*Monday, February 14, 2011 at 3:06pm by JuliaAnne*

**English**

1. At Sora's school, the first period begins at 8:30 am. 2. The first class begins at 8:30 am at Sora's school. 3. School begins at 8:30 at Sora's school. Students should come to school by 8:30, and they should do self-study for 30 minutes. They take a break for 10 minutes. ...
*Monday, March 22, 2010 at 4:53pm by rfvv*

**Algebra**

x/6=-5 multiply 6 on both sides x/6 *6 = -5 * 6 6x/ 6 = -30 X (6/6) = -30 X (1) = -30 X = -30
*Thursday, May 30, 2013 at 11:46pm by preshay *

**Physics**

(a) Let s be the coefficient of statice froction and k be the coefficient of kinetic friction. From the info on the angle at whic slidign starts, M g sin 30 = M g s cos 30 tan 30 = s (b) Solve for the acceleration rate a after sliding begins. It slides a distance X in time T. ...
*Thursday, October 1, 2009 at 11:32am by drwls*

**spanish**

¿Adónde vas los lunes a las 8:30 de la mañana? = 1. Look at the Spanish. 2. Come up with the English = Where do you go/are you going on Mondays at 8:30 in the morning? 3. Answer first in English. I go to school (or my first class) on Mondays at 8:30 in the morning. 4. Now, put...
*Monday, November 28, 2011 at 8:20pm by SraJMcGin*

**Math**

1/3 = 10/30 1/5 = 6/30 1/6 = 5/30 10/30 + 6/30 + 5/30 = 21/30 = 7/10
*Sunday, March 23, 2014 at 2:24pm by Ms. Sue*

**science/math**

Using Calculus a = -4 v = -4t + c when t=0 , v = 30 30 = 0 + c v = -4t + 30 s = -2t^2 + 30t + k when t = 0 , s = 0, so k = 0 s = -2t^2 + 30t when the car stops, v = 0 4t = 30 t = 30/4 = 7.5 seconds when t = 7.5 s = -2(7.5)^2 + 30(7.5) = 112.5 m
*Thursday, January 16, 2014 at 9:17pm by Reiny*

**MATH**

=0.2311 (B) p(x is at most 4)=P (x,=4)=p(0)+p(1)+p(2)+p(3)+p(4) =c(12,0)(0.30)^0(1-0.30)^2(12-0)+c(12,1)(0.30)^1(1-0.30)^(12-1) +c(12,2)(0.30)^2(1-0.30)^(12-2)+c(12,3)(0.30)^3(1-0.30)^(12-3)+c(12,4)(0.30)^4(1-0.30)^(12-4) (C) u=np=12*0.3=3.6 12*0.3*0.7=2.52 (2.52)=1.5875 to ...
*Friday, November 11, 2011 at 1:19pm by latoya*

**math**

Change to improper fractions with common denominator. 16/15 + 33/10 - 14/5 = 32/30 + 99/30 - 84/30 = 47/30 I hope this hleps. Thanks for asking.
*Thursday, March 20, 2008 at 10:35pm by PsyDAG*

**third grade math**

reed's bookstore is open 9 hours each day. it opens at 9:30a.m. when does it close? i know the answer but i don't know how to show my work. please help. Two ways to do it. 12:00 noon - 9:30 = 2:30 hours in the morning. That leaves 6:00 hours - 2:30 minutes for the afternoon ...
*Tuesday, April 24, 2007 at 5:22pm by zeke*

**geometry**

I just solved your question using Calculus, but I am not sure if you know Calculus, so .... Treat your data two ordered pairs (0,30) and (2,16) where the first coordinate is time and the second is velocity slope = (30-16)/(0-2) = -7 so v = -7t + b , using the old y = mx + b ...
*Wednesday, December 7, 2011 at 8:35pm by Reiny*

**math**

-25/30, -10/30, -9/30, 20/30?
*Sunday, November 7, 2010 at 10:08pm by Aly*

**URGENT MATH please**

Did you make a sketch ? Let the width of the cut done by Chris be x m That leaves a rectangle of 40-2x by 30-2x to be cut by Jerri. (40-2x)(30-2x) = (1/2)(40)(30) 4x^2 - 140x + 1200 = 600 x^2 - 35x + 150 = 0 (x-5)(x-30) = 0 x = 5 or x = 30 , but x = 30 makes no sense x = 5 The...
*Tuesday, March 27, 2012 at 10:10pm by Reiny*

**Algebra 1**

X lbs @ $2.45/lb. (30-X)lbs @ $2.30/lb. 2.45X + 2.30(30 - X) = $2.35*30, 2.45X + 69 - 2.30X = 70.5, 0.15X = 70.5 - 69 = 1.5, X = 10lbs. @ $2.45/lb. 30 - X = 30 - 10 = 20lbs @ $2.30/lb.
*Tuesday, June 28, 2011 at 6:20pm by Henry*

**oops - algebra**

looks like Marie did mess up at the end 30 + 21/30 = 307/10 or 30.7 or 30 7/10
*Tuesday, August 30, 2011 at 9:33pm by Reiny*

**Physics-Check**

A missile launches at a velocity of 30.0 m/s at an angle of 30.0* to the normal. What is the maximum height the missile attains? (((30)*cos(30))^2)/(2*9.8) )
*Friday, April 10, 2009 at 3:01pm by LeRoy*

**math**

First change them to a common denominator. -1/3 = -10/30 2/3 = 20/30 -5/6 = -25/30 -0.3 = -3/10 = -9/30 Can you see your answer now?
*Sunday, November 7, 2010 at 10:08pm by Ms. Sue*

**Math**

first you must change the mixed fractions to improper fractions 5 7/10 - 3 14/15 = 57/10 - 59/15 now the common denominator is 30 = 171/30 - 118/30 = 53/30 or 1 23/30
*Thursday, January 10, 2008 at 10:43pm by Reiny*

**motion problem**

since time = distance/speed, if his speed is s, then 30/(s-2) = 2 + 30/(s+2) s = 8 check: downstream: 30/10 = 3 upstream: 30/6 = 5
*Tuesday, November 12, 2013 at 8:37pm by Steve*

**math**

a = 30 r = 27/30 = 9/10 or 0.9 so we want Sum(8) = a(1 - r^8)/(1-r) = 30( 1 - .9^8)/ .1 = 170.86 ft sum∞ = a/(1-r) = 30/.1 = 300
*Monday, April 22, 2013 at 3:56pm by Reiny*

**Math**

Your problem states that 4/5 enjoy basketball, and 5/6 enjoy soccer. 4/5 + 5/6 = 24/30 + 25/30 = 49/30 = 1 19/30 That's way more than the total number of students.
*Saturday, October 20, 2012 at 8:39pm by Ms. Sue*

**Math**

P = 2(L + W) 30 = 2 (2W + W) 30 = 4W + 2W 30 = 6W 30/6 = W 5 = W Now find the length.
*Thursday, September 15, 2011 at 8:53pm by Ms. Sue*

**Trig**

You are close. -pi/6 radians = -30º so what you are really looking for is 1/tan(-30) So you are in the fourth quadrant where the tangent is negative In another post to you I pointed out the 30,60,90 triangle, from that we know that tan(30) = 1/√3 so tan(-30) = -1/√...
*Thursday, March 6, 2008 at 5:51pm by Reiny*

**Algebra**

if the length and width are x,y respectively, then x = y+1 2xy = xy+30 xy=30 x=6,y=5 check: xy = 6*5 = 30 2xy = 12*5 = 60 = 30+30
*Saturday, November 17, 2012 at 6:10am by Steve*

**algebra 1 Helppppp Meeee Pleaseeee**

1.70 * 9 = 15.30 15.30 - 9 = 6.30 or .70*9 = 6.30 6.30 + 9 = 15.30
*Wednesday, September 14, 2011 at 7:48pm by Damon*

**Physics**

43/√2 = 30.4, so the wind's vector is (-30.4,-30.4) If the plane flies on heading θ, (-30.4,-30.4)+(430cos(θ-45°),430sin(θ-45°)) = (0,y) so, we have -30.4 + 430cos(θ-45) = 0 cos(θ-45) = 30.4/430 = 4.05 so, the plane flies N41°E
*Sunday, December 30, 2012 at 9:54pm by Steve*

**Algebra**

2 / 3 - 4 / 5 - ( - 11 / 15 ) + 7 / 10 - 5 / 2 = 2 / 3 - 4 / 5 + 11 / 15 + 7 / 10 - 5 / 2 ______________________________________ Least Common factor = 30 2 / 3 = 20 / 30 4 / 5 = 4 * 6 / ( 5 * 6 ) = 24 / 30 11 / 15 = 2 * 11 / ( 2 * 15 ) = 22 / 30 7 / 10 = 3 * 7 / ( 3 * 10 ) = ...
*Saturday, May 5, 2012 at 9:54pm by Bosnian*

**Math**

36' 30" = 36.5" then (29deg 36' 30") = 29° + 36.5/60° = 29.6083333.. 5((29deg 36' 30") = 5(29.608333..) = 148.041666..° = 148° + 2' + 30" or 5(29)° = 145° 5(36') = 108' = 3° 5(30") = 150" = 2' and 30" so 5((29deg 36' 30")) = (145+3)° 2' 30" = 148° 2' 30" here is a neat key on ...
*Monday, June 3, 2013 at 6:46pm by Reiny*

**math**

Convert all the fractions to fractions with the same denominator, using the LCD. A. 18/30 B. 20/30 C. 15/30 D. 21/30 Now, wouldn't the largest fraction be closest in value to 1?
*Friday, January 28, 2011 at 6:15pm by helper*

**money**

$X Initially. 1. X - (x/2+6) = x/2 - 6. 2. (x/2-6)-1/3(x/2-6)-6 = 2/3(x/2-6)-6 =2x/6-4-6 = x/3-10. 3. (x/3-10) - 1/4(x/3-10) = 3/4(x/3-10)= x/4-30/4 = (x-30)/4 = Bal. = $6. (x-30)/4 = 6. x-30 = 24. X = 24 + 30 = $54. = The amt. she started out with.
*Monday, February 27, 2012 at 9:38am by Henry*

**physics**

x = 15t^2 - 2.0t^3 v = dx/dt = 30 t - 6 t^2 a = d^2x/dt^2 = 30 - 12 t part a, just put in 3 for t in the above part b max position when v = 0 0 = t (30 - 6t) so at t = 5 sec then x = 15*25 - 2*125 = 125 part c max v when a = 0 t = 30/12 v = 30 (30/12) - 6 (30/12)^2 part d not ...
*Sunday, December 14, 2008 at 8:21pm by Damon*

**math**

simplify -15r^0/30p^-2 if that's (30p)^-2 then the answer is 30p^2 if it's 30(p^-2), then the answer is (p^2)/30 don't forget that for (30p)^-2, if it becomes 30p^2, i meant that it becomes (30^2)*(p^2). be careful with parentheses -15r^0/30p^-2. I assume it is -15(r^0)/30(P^-...
*Tuesday, October 10, 2006 at 11:08pm by jim*

**Math**

For the first problem all you have to do is add 3 hours to 10:00am.(count 10:00 to 11:00 (1 hour), 11:00 to 12:00 (2 hours), etc.) For the second problem just count backwarks 8 hours (i.e. 3 hours earlier of 5:30 would be 2:30 (5:30 to 4:30 (1 hour), 4:30 to 3:30 (2 hours), 3:...
*Wednesday, February 25, 2009 at 7:24pm by Katie*

**Data management**

probability of non clean for each bathroom in each day is 5/6 what is the probability of 1 not clean in thirty trials? Probability of non clean = 5/6 number of trials 30 Bernoulli (n/k) is binomial coef p k non cleans in n trials = (n/k)(5/6)^k(1-5/6)^(n-k) here k = 1 and n=30...
*Wednesday, January 16, 2008 at 4:33pm by Damon*

**math**

Multiply the first equation by 4 and the second by 6, and then add the two. This will eliminate the x and let you solve for y. x - (4/6) y = -8 -x + (6/5)y = 24 (-20/30 + 36/30)y = 16 (16/30)y = 16 y = 30
*Monday, July 21, 2008 at 4:35pm by drwls*

**Economics (attempted as suggested by economyst)**

a. 60 b. 60 c. 30*30+12=912 d. atc= (3600+60*30)/30=180 e. increasing, decreasing
*Monday, March 30, 2009 at 5:04pm by Robert*

**Math, Fraction**

1/6 times 30 = 5 pennies 1/5 times 30 = _____ nickels 1/3 times 30 = _______dimes Add up your coins and subtract from 30 to find the number of quarters.
*Wednesday, March 13, 2013 at 7:07pm by Dr. Jane*

**Proofs and numbers**

24x = 42 mod 30 24x = 12 mod 30 (24-30)x = 12 mod 30 -6x = 12 mod 30 x = -2 so one possible solution is x = -2(24) = -48 adding/subtracting multiples of 30 , our mod, will yield other solutions making -2(24) + 60 , or 12 , our smallest positive answer A general solution would ...
*Wednesday, November 28, 2012 at 10:48am by Reiny*

**math **

30 = total 15/30 = .5:1 or 1:2 like b-ball 10/30 = .333:1 or 1:3 like soccer 5/30 = .166:1 or 1:6 like softball
*Sunday, November 7, 2010 at 11:02pm by Goizueta*

**Math**

10 - 3:50 = 6 hours, 10 minutes 2:30 + 0:45 + 1:15 = 3:90 = 4:30 6:10 - 4:30 = 5:70 - 4:30 = ?
*Monday, September 17, 2012 at 7:45pm by Ms. Sue*

**math**

Your equation does not produce the given data values since you want this to be linear, treat it as if you are given two ordered pairs (1993,61.3) and (1999,64.7) the slope of that is 3.4/6 or 17/30 so the equation would be E(t) = (17/30)t + b sub in first point 61.3 = (17/30)(...
*Wednesday, January 7, 2009 at 11:34am by Reiny*

**Calc**

I don't know much about the physics of this topic, but when I sub in h=0 (sea level) I do not get 30 , like I should from the given equation. according to your rule of thumb we could have the following h P 0 30 1000 29 ---> two points (0,30) and (1000, 29) slope = (29-30)/(...
*Tuesday, October 23, 2012 at 9:07am by Reiny*

**math, Jay**

How do these fractions turn into the following fractions. 1/3=10/30 1/5=6/30 1/10=3/30 There is a fundamental fact of math that says if you multiply anything by one , nothing changes. but 1 = 3/3 = 10/10 etc. So if you have a fraction, and multiply it be the same numerator AND...
*Wednesday, December 6, 2006 at 7:34pm by Jasmine20*

**Math**

2 sheets of paper for 30 studens: 2(30) if she has 19 and needs more subtract 19 from 2(30). example: (2(30))-19.
*Tuesday, January 31, 2012 at 11:17pm by mary*

**math**

1. factorize m^2-7m-30 Look for two numbers such that their product is -30 and the sum/difference is -7. 1*30 nope 2*15 nope 3*10 yes, 3*(-10)=30, 3-10=-7 So m^2-7m-30=(m-10)(m+3)
*Wednesday, February 22, 2012 at 9:41pm by MathMate*

**physics**

T(s) = 13C is the air temperature, the initial temperature T(o) = 30C. Newton’s law of cooling is differential equation dT/dt = - k(T-T(s)) Its solution is T =T(s) + (T(o) - T(s)) •e^-kt. After the first 5 min 20 = T(s) + (30 – T(s)) •e^-5•k. (1) After a further 5 min, ...
*Monday, April 16, 2012 at 4:55pm by Elena*

**Math**

3 1/15 - 3 11/30 Let's convert these into improper fractions: 46/15 - 101/30 Now we want a comman denominator: (46 x 2)/(15 x 2) - 101/30 92/30 - 101/30 Now we can subtract the top numbers and keep the denominator: -9/30 Now let's simply by dividing by 3: -3/10
*Monday, December 8, 2008 at 11:37pm by Lena*

**English**

Hi! Any ideas on an activity which could last for 45 minutes? The topic - Valentine's day Learners: 16 year old, 30 in the class, learning English as a foreign language for 7 years
*Monday, February 13, 2012 at 12:33pm by Mark*

**algebra**

ok, in the 50 liters, you get 30 liters of alcohol content. In the final mixture, you want 30 percent, so .30(V+50)=30+.2V check that. solve for V, the volume of 20percent.
*Friday, July 23, 2010 at 9:34am by bobpursley*

**Math**

Go to en wikipedia and type: Trapezoid You can construct many trapezoides with some area but different perimeter. Area of trapezoid=((a+b)/2)*h Example: a+b=10 h=6 A=30 a+b=2 h=30 A=30 a+b=12 h=5 A=30
*Sunday, January 16, 2011 at 9:58pm by Anonymous*

**math need help please**

let the number be x then, 50% of x = 30 (50/100)* x = 30 0.5 x = 30 x = 30/0.5 x = 60 50% of 60 is 30
*Wednesday, November 26, 2008 at 11:22am by jess*

**math**

to be arithmetic, 30-6 = 150-30 to be geometric , 30/6 = 150/30 is either of those statements true? If so, is the pattern true for all the numbers given?
*Saturday, June 6, 2009 at 2:53am by Reiny*

**math**

distribute the 4. 1/6 + 8/5 - 28/10 then find Least Common Denominator. which would be 30. (5/5)(1/6) + (6/6)(8/5) - (3/3)(28/10) 5/30 + 48/30 - 84/30 solve
*Thursday, November 18, 2010 at 11:23pm by Nat*

**English**

1. He has lunch at 12:00 p.m. 2. He has lunch at noon. 3. He has lunch at 12:00 noon. (Which expressions can we use? Are all OK? Which one is frequently used?) 4. He has dinner at 17:30. 5. He has dinner at 17:30 p.m. 6. He has dinner at 17:30 o'clock. (Is only #4 correct? #5 ...
*Monday, April 6, 2009 at 11:46pm by John*

**math**

Write the answer to the problem as an algebraic expression. The product of two numbers is 30. One of the numbers is r. What is the other number? Our choices are: a) r/30 b) 30/r c) 30-r d) 30r I believe the answer is b but am thinking it may be c, any help?
*Thursday, January 20, 2011 at 4:36pm by m*

**Math**

1/6 + 2/5 + 1/3 5/30 + 12/30 + 10/30 = 27/30 = 9/10
*Thursday, November 8, 2012 at 10:31pm by Ms. Sue*

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