Wednesday

April 16, 2014

April 16, 2014

Number of results: 265,400

**Calculus**

a) h = 10(.75)^n that is basically what you had b) d = 10 + 10(.75)^1 + 10 (.75)^2 + 10(.75)^3 .... In other words I sort of agree with you c) This is a geometric series like a compound interest problem in general g + gr + gr^2 + .... gr^(n-1) Sn = [ g (1-r^n ]/ (1-r) here g...
*Wednesday, April 15, 2009 at 9:55am by Anonymous*

**math**

m=mass[gr] V=Volume[cm^3] rho=densty[gr/cm^3] 1cm=10mm 1mm=1/10 cm 1mm^3=(1/10)^3=1/1000=0.001cm^3 V=20*0.001=0.02 cm^3 m=V*rho=0.02*3.52=0.0704 gr P.S. rho is small Greek letter rho
*Wednesday, April 6, 2011 at 10:22pm by Anonymous*

**Physics helpp**

F-F(gr) = ma a= {F-F(gr)}/m = =(15-10)/15=0.33 m/s² (upward)
*Tuesday, May 14, 2013 at 10:49am by Elena*

**math**

there is a graph, and the title is Students who dress up for spirit week.60 grade 7 boys did,70 grade 7 girls did,70 grade 8 boys did, and 80 gr 8 girls did. the question is what this graph is showing. I put the graph is showing how many gr 7 boys dressed up for spirit week, ...
*Saturday, January 31, 2009 at 10:46pm by beeca*

**Math**

gr has it right 9 * 10^-10
*Tuesday, December 16, 2008 at 1:19am by Damon*

**Physics**

And the answer is still wrong, you have the wrong formula and forgot 9.81 as surface grav. Gr=R^2/R^2 * G Gr= (6378^2/6598^2) *9.81 Gr= 9 . 166 708 367 IDK about the percent thing
*Saturday, January 22, 2011 at 10:44am by BobSheldon*

**Gr. 10 Math**

2x^2 - 3xy + 4y^2 for x=2, y=-1 My Answer: (2(2^2)) - (3*2*-1) + (4(-1^2)) = 10 8-(-6)+4(1)=14+4=18 The text book is correct.
*Tuesday, April 20, 2010 at 2:24am by Dr Russ*

**GENETIC HYPOTHESIS**

AIM:TO DETERMINE THE NUMBER OF GR.10-12 THAT CAN ROLL THEIR TONGUE(rollers) AT SCHOOL. 1)fomulate a hypothesis. MY ANSWER:GR.11 HAS M0RE LEARNERS THAT CAN ROLL THEIR TONGUE (is it correct and any tips to master ths)
*Tuesday, March 25, 2014 at 3:07pm by EMIHlE*

**Gr.10 Math!!!! urgent**

thnkss, 1.)??
*Monday, April 6, 2009 at 9:28pm by nini*

**gr 10 math**

How do you know when to divide and when to multiply?
*Thursday, March 10, 2011 at 8:48pm by Rebecca*

**gr 10 math**

2000 * 0.07 = ?
*Thursday, March 10, 2011 at 8:48pm by Ms. Sue*

**math**

No the answer should have 10 zeros. When you multiply two same numbers their exponents are added. so 10^6.10^4 = 10^(6+4). when it is like this (10^6)^4 then you multiply exponents and get 10^24. so answer is 60,000,000,000
*Tuesday, December 16, 2008 at 12:59am by gr*

**Gr.10 Math!!!! urgent**

for 1.) what formula are u using though?
*Monday, April 6, 2009 at 9:28pm by nini*

**Gr 10 math - finding slopes in shapes**

Thank you, Steve.
*Sunday, March 23, 2014 at 8:38pm by iza*

**gr 10 math**

calculate the interest earned in 1 year on $2000 at 7%.
*Thursday, March 10, 2011 at 8:48pm by Rebecca*

**gr 10 math**

how would i solve this by using a linear system?
*Thursday, March 10, 2011 at 8:48pm by Rebecca*

**3rd gr math - Tenths**

9 1/10 = mixed number 9.1 = decimal
*Wednesday, June 1, 2011 at 10:03pm by Writeacher*

**Math-Gr.11 urgent**

for t(10)= a+9d .. where did you get the 9 from? & can you explain how you got 710? thank you
*Sunday, January 4, 2009 at 10:58pm by Mae*

**Gr.10 Math!!!! urgent**

Did that make sense? were you able to solve #1 and understand #2?
*Monday, April 6, 2009 at 9:28pm by Riley*

**Gr 10 math - finding slopes in shapes**

correct. -3/-4 = (-1)(3) / (-1)(4) = 3/4 The -1's cancel out
*Sunday, March 23, 2014 at 8:38pm by Steve*

**gr.10 math**

arrange the first equation to x = y-5 sub replace the x in the second equation with that expression 2x-y=-7 2(y-5) - y = -7 2y - 10 - y = -7 y = -7 + 10 y = 3 , now let's put that back into x = y-5 x = 3 - 5 x = -2 so x = -2, y = 3 check in the first: is -2 - (3) = -5 ? , yes...
*Monday, February 16, 2009 at 5:56pm by Reiny*

**Math correct**

1.945*10^10 and yes your polynomial is correct.
*Tuesday, December 16, 2008 at 11:28am by gr*

**GR.12 DATA MANAGEMENT**

I GOT IT!!!!!!! [10!/(2!2!) - (9!/2!2!)]+[(2)(10!/2!2!2!) - [(2)(9!/2!2!2!)]=1632960
*Wednesday, June 16, 2010 at 5:15pm by Maggie*

**gr.10 math**

solve the linear system using substitution. please show me the steps!:) x-y=-5 2x-y=-7
*Monday, February 16, 2009 at 5:56pm by saira*

**Gr. 10 Math**

Evaluate each expression for the given value(s) of the variable(s). 2x^2 - 3xy + 4y^2 for x=2, y=-1 My Answer: (2(2^2)) - (3*2*-1) + (4(-1^2)) = 10 Text Book Answer: 18 Please help. Am I doing something wrong? I redid the expression 3 times and still got 10. But why textbook ...
*Tuesday, April 20, 2010 at 2:24am by John*

**Science!! Please HELP**

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate. Given this growth rate, ...
*Tuesday, October 6, 2009 at 10:10pm by Rani*

**chemistry**

so I would set it up like 4g ? ---- ----- 10L 2.5L so i did 4 x 2.5 = 10 / 10 = 1 gr. is this right?
*Friday, January 28, 2011 at 1:10pm by wendy*

**math**

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help. thank you
*Tuesday, September 4, 2012 at 4:50pm by Angel*

**math, medical**

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help. thank you
*Tuesday, September 4, 2012 at 5:08pm by Angel*

**Math correct**

your first answer is right except the second term which should be 5x^3. And writing in scientific notation, when moving decimal to left, exponent is negative, so correct answer will be 1.945*10^-10
*Tuesday, December 16, 2008 at 11:28am by gr*

**Gr. 10 math**

Factor by Grouping.please show me the steps!!!!!!! 1.) y2+11y+30 2.) x2+4x-5 3.) a2-a-56
*Monday, April 6, 2009 at 4:34pm by Nini*

**Gr. 10 Math!**

Factor by Grouping. PLEASE SHOW ME THE STEPS! 1.) 8a^2+12ab-3b^2-2ab 2.) x^2+5x+7x+35 3.)
*Monday, April 6, 2009 at 8:58pm by nini*

**5 gr math**

1 century = 100 years 1 decade = 10 years
*Wednesday, June 6, 2012 at 12:42pm by Ms. Sue*

**GR.10 CIVICS!**

thank you!!
*Saturday, May 30, 2009 at 7:59pm by MINONO*

**gr 10 math**

I don't know. Please click Post a New Question and ask your question.
*Thursday, March 10, 2011 at 8:48pm by Ms. Sue*

**Gr.10 Math!!!! urgent**

Factor by Grouping. PLEASE SHOW ME THE STEPS! 1.) 8a^2+12ab-3b^2-2ab 2.) x^2+5x+7x+35
*Monday, April 6, 2009 at 9:28pm by nini*

**gr 10 math**

x^2 - 7x + 12 = 0 The 12 can factor into -3 and -4 to add to -7 in the middle term. (x-3)(x-4) = 0 x = 3 or 4.
*Tuesday, May 31, 2011 at 11:37am by PsyDAG*

**Gr.10 History !!!**

NOO HELP
*Monday, April 20, 2009 at 5:00pm by nini*

**GR.10 CIVICS!**

You're welcome.
*Saturday, May 30, 2009 at 7:59pm by Ms. Sue*

**Math**

You move decimal place after first significant figure and number of places you move does become your exponent but when you move right, exponent is negative and when you move left exponent is positive. Since in this case we are moving decimal to right by 10 places the exponent ...
*Tuesday, December 16, 2008 at 1:19am by gr*

**science gr. 10**

URGENT! PLEASE HELP ME!! :) Thanks!
*Wednesday, November 19, 2008 at 11:07pm by sarah*

**science gr. 10**

THANK YOU DR BOB!
*Wednesday, November 19, 2008 at 11:07pm by sarah*

**gr.10 mathh!**

What are the factors of 1000
*Saturday, September 19, 2009 at 2:08am by Joe*

**gr 10 english**

political power
*Tuesday, September 7, 2010 at 3:05pm by Rebecca*

**math gr.10**

They are 5 meters wide a piece which would give you 350 m^2. You then take away 25 meters for where they cross.
*Wednesday, May 11, 2011 at 7:57pm by Rick*

**GR.10 MATH.**

i want to noe what is the DIFERENCE between partial and complete factoring. an e.g of a partial factoring problem is y=2x^2+8x+5 an e.g of complete factoring is y=x^2+3x-10
*Monday, April 27, 2009 at 12:53am by nini*

**gr 10 math**

a) If (x+7)(x-4) = 0 then x = -7 or 4. d) x = -4 Yes, you did a and d right, but carry it out all the way. f) (3x-2)(3x+2) = 0 I don't have the time to deal with the remaining problems.
*Tuesday, May 31, 2011 at 11:18am by PsyDAG*

**Gr 10 Chemistry**

we will be happy to check your thinking.
*Sunday, November 9, 2008 at 6:43pm by bobpursley*

**GR.12 DATA MANAGEMENT**

3 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2, i think
*Wednesday, June 16, 2010 at 5:15pm by Jen*

**calculus (gr 12)**

v = 45 - 10t a = -10
*Wednesday, April 17, 2013 at 9:43pm by Reiny*

**gr 10 math**

You can tell by estimating your answer. You know that 10 percent of 2,000 is 200. Your percentage is less than 200. 2000/0.07 = 28,571.43 2000 * 0.07 = 140 You want to know what 7% of 2000 is. "Of" always means to multiply.
*Thursday, March 10, 2011 at 8:48pm by Ms. Sue*

**organic chemistry**

No. The ethanol would quench the Grignard reagent if the GR was added separately, or the GR would not form if carried out in ethanol.
*Friday, February 27, 2009 at 12:21am by Dr Russ*

**gr 10 math**

Solve by factoring. a) x^2 + 3x - 28 = 0 (x+7)(x-4) d)x^2 + 8x + 16 = 0 (x+4)(x+4) f)9x^2 - 4 = 0 i)8k^2 - 3k = 0 k)x^2/6 - x + 4/3 = 0 did i do a and d right? Can you show me how to solve the rest?
*Tuesday, May 31, 2011 at 11:18am by Rebecca*

**6th gr GRAMMAR**

Cory -- why is your subject 6th gr GRAMMAR when the question was from SAT? This was misleading and deceptive.
*Friday, October 17, 2008 at 5:34pm by Ms. Sue*

**POPULATION**

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate. Given this growth rate, ...
*Tuesday, October 6, 2009 at 11:16pm by Anonymous*

**Gr 10 math - finding slopes in shapes**

Is the slope 3/4 the same as -3/-4? In other words, do the negatives cancel each other out and become a positive number? Thanks!
*Sunday, March 23, 2014 at 8:38pm by iza*

**Gr. 10 CIVICS!!!!please HELP!! :(**

See my answer below.
*Friday, May 1, 2009 at 10:39pm by Ms. Sue*

**gr. 10 physics **

I must find the speed of an object, the infermation that is given to me is:n height: 0.10 kinetic energy: 0.50 time travel o.72 (m/s squared). i belive that speed = 0.3... is this correct?
*Tuesday, February 9, 2010 at 7:26am by Emily*

**gr 10 art**

what are the seven ways to portary depth or distance on a 2-d surface?
*Friday, June 12, 2009 at 8:17pm by Mary*

**Physics Gr.11**

distance fell is proportional to time squared. what is 10^2 and 1^2
*Sunday, April 18, 2010 at 5:03pm by bobpursley*

**Gr. 10 math**

what multiples to the last term, and add to the second? 1) 6,5 2) 5,-1 3) -8,7 Notice when signs are different, you place the sign of the middle term on the larger So, on 3, for instance...the answer is.. (x-8)(x+7) you do the others, I will check if you need it.
*Monday, April 6, 2009 at 4:34pm by bobpursley*

**Math**

Mary has an order to be given Atropine gr. 1/150 sc on call from the O.R. The O.R. has called for Mary, so you need to prepare her injection right away. The label states : Atropine 0.4 mg/ml. How many ml are you to administer?0.35 ml0.5 ml1 ml1.5 ml Maggie has Morphine sulfate...
*Monday, October 27, 2008 at 1:38am by Jennifer*

**Gr 11 - math linear systems**

(10-2)x - 2000 = $16,000 8x - 2000 = 16000 8x = 18000 X = 2,250 Tickets.
*Tuesday, March 11, 2014 at 9:24pm by Henry *

**Science - gr. 10 physics**

How do you find displacement when given a velocity/time graph?
*Monday, January 5, 2009 at 7:40pm by Jake*

**Science - gr. 10 physics**

Calculate the area under the velocity-time graph.
*Monday, January 5, 2009 at 7:40pm by GK*

**gr 10 english**

my laptop will only let me open 2 out of all the websites on the page
*Tuesday, September 7, 2010 at 3:05pm by Rebecca*

**physics**

mg = GmM/R^2 M=gR^2/G, where g=9.8 (m/s^2) , gravitational constant G = 6.67•10^-11 (m^3•kg^-1•s^-2)
*Monday, April 2, 2012 at 5:27pm by Elena*

**Physics**

How many calories it take to elevate the temperature of 10 gr of water-from 26C to 50C?
*Monday, October 22, 2012 at 3:07pm by Martha*

**gr 10 english**

can someone help me find an article on "power" in the newspaper, particulary somewhere in Ontario?
*Tuesday, September 7, 2010 at 3:05pm by Rebecca*

**Gr. 10 math again!**

Factor by Grouping.Thanks Bob. PLEASE SHOW ME THE STEPS! 1.) 6x2-21xy+8xz-28yz just to make it clear,the 2 infront of -21 is actualli an Exponent 2. 2.) x2+5x+7x+35
*Monday, April 6, 2009 at 4:47pm by Nini*

**Gr. 10 CIVICS!!!!please help again! :(**

Doesn't voting illustrate communicating and participating in important issues?
*Friday, May 1, 2009 at 10:49pm by Ms. Sue*

**Math**

I'm in gr 11 doing Trigonometry 14.2 = b ---- ---- sin38 sin 67 a = 46 --- ---- sin20 sin130 (10.7)^2 = (9.5)^2 + (12.4)^2 - 2(9.5)(12.4) cos <B I just need someone to explain this to me because I just don't get it... thank you for any help
*Sunday, September 23, 2007 at 11:07am by Louis*

**math - gr 12**

Break it up into 3 cases 1. Joe at the door, then 10 others at the door, C(10,4) on the floor, C(6,6) as floaters = 10x210x1 = 2100 2. Joe on the floor, leaving C(10,3) for the remainder on floor, C(8,2) for the door and C(6,6) as floaters = 120x28x1 = 3360 3. Joe as floater ...
*Monday, February 23, 2009 at 7:05pm by Reiny*

**gr.10 physics**

could someone please help me with this? Rearrange and simplify for r when A=3.14r^2 by the way, 3.14 is supposed to be pi, but i don't know how to write it...
*Wednesday, December 10, 2008 at 7:34pm by slappy*

**Gr 10 science**

I can't find a picture to build a model of calcium sulphate using styrofoam ball pls help
*Sunday, March 31, 2013 at 12:25pm by Kim*

**GR.10 MATH.**

Form is ax^2 + bx + c I can not factor the first example with whole numbers at all. b^2-4ac = 44 which is the square of no whole number. The second one is (x-2)(x+5) note that b^2-4ac = 49 which is 7^2
*Monday, April 27, 2009 at 12:53am by Damon*

**calculus (gr 12)**

the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...
*Tuesday, May 14, 2013 at 11:00am by Maria*

**Physics - KE**

In Figure 11-32 (which shows a ball at the top of an incline, at the bottom of the incline a loop begins with radius R and Q a point on the loop lined up with the center of the loop), a solid brass ball of mass m and radius r will roll without slipping along the loop-the-loop...
*Tuesday, March 27, 2007 at 6:18pm by COFFEE*

**gr.10 mathh!**

factor the equation: -6x^2+15x+36 please show me the steps in answering this problem. thanksss..)
*Saturday, September 19, 2009 at 2:08am by Saira*

**physics**

Newton’s 2nd law vector(ma) = vector(mg ) +vector( N) +vector(Ffr) Projections: ma=F(fr) 0=N-mg mv²/r =μN N=mg mv²/r = kN = μmg μ=v²/gr. tanα =F(fr)/N = μmg/mg = μ = v²/gr. v=sqrt{gr•tanα} T=2πR/v= 2πR/ sqrt{gr•...
*Sunday, July 28, 2013 at 9:36pm by Elena*

**gr.10 math**

could you please show me the steps to solve this equation?I looked at the answer in the back of our textbook but i keep getting the wrong answer. 5(2y+1)-(5y-2) answer=5y+7. thanks so much!
*Friday, February 11, 2011 at 4:50pm by anon*

**science gr.8 science fair topic ideas**

what are some ideas for science fair projects gr.8?!?! and please give an experiment with it thank u!!
*Thursday, January 23, 2014 at 10:30pm by smiley*

**Math, Gr 10**

A rectangular field is to be enclose by 800 meters of fencing and the fourth side with be along the side of a barn. A) What dimensions will give the maximum area? B) What is the maximum area?
*Monday, May 6, 2013 at 8:53pm by Anne*

**Gr. 3 Math**

My son brought home overdue work and I am having a problem with it - lol - gr. 3. 1. Brodie wants to show his mother that he did not track mud into the house. a) how can he prove the tracks are not his? b) Will his mother agree why or why not. They show two foot prints in a ...
*Saturday, March 15, 2008 at 1:31pm by Rebecca*

**Math**

Write each number in expanded form using exponents. Pls check 1, 234 (1*10^3)+(3*10^2)+(2×10^1)+4 210, 290, 450 (2*10^8)+(1*10^7)+(2*10^6)+(9*10^5)+(4*10^4)+5 7,123,456,089 (7*10^9)+(1*10^8)+(2*10^7)+(3*10^6)+(4*10^5)+(5*10^4)+(6*10^3)+(8*10^2)+(9*10^1)
*Monday, September 16, 2013 at 8:23pm by Gio*

** VB programming**

This problem is creating code for a line chart. - Write a program to create the line chart. Use Table in 9.6: Table 9.6] Two -year college enrollments (in thousands). 1960 1970 1980 1990 2000 ---------------------------------- Male 283 1375 2047 2233 2398 Female 170 945 2479 ...
*Wednesday, December 1, 2010 at 6:19am by Lee*

**calculus (gr 12)**

F(-2) = 2*(-2)^3 + 4*(-2)^2 -5*(-2) + 8 F(-2) = -16 + 16 + 10 + 8 = 18.
*Wednesday, April 17, 2013 at 9:33pm by Henry *

**advanced functions. gr.12**

2^2x+ 3(2^x) - 10 = 0 6^2x-2(6^x)-15=0 3^4^5^x =336
*Tuesday, August 11, 2009 at 3:25pm by ashley*

**Math gr 8**

thank you
*Tuesday, November 4, 2008 at 6:13pm by Tyler*

**gr.7 math**

thank you!!!!
*Monday, October 26, 2009 at 5:29pm by vanessa*

**math gr 7**

Thanks =)
*Tuesday, December 8, 2009 at 6:55pm by Leslie*

**gr 9 math**

3=3 ..-(P-1) 4
*Thursday, October 18, 2012 at 4:28pm by zack*

**physics**

1 g = 0.03527396194958 oz. 1.75•10⁶ gr = 61729.4334117660 oz
*Sunday, September 23, 2012 at 10:04pm by Elena*

**Science - gr. 10 physics**

I HATE PHYSICS
*Monday, January 5, 2009 at 7:40pm by POOPEE*

**calculus (gr 12)**

cos has max at t=0 cos(pi/2 t) has period 4 cos has min at 1/2 the period. so, f(0) (8am) = 5*1+5 = 10 f(1) (9am) = 5*0+5 = 5 f(2) (10am) = 5*(-1) + 5 = 0 ... least productive at 10:00,14:00,... (B)
*Tuesday, May 14, 2013 at 11:00am by Steve*

**physics**

g =8.71 N/kg. h = 150 000 m=1.5•10^5 m R= 8.71•10^7 m. (a) g = G•M/(R+h)². M = gR²/G, where the gravitational constant G =6.67•10^-11 N•m²/kg², (b) gₒ = G•M/R². (c) m•gₒ.
*Tuesday, May 15, 2012 at 7:35pm by Elena*

**Physics - KE**

In Figure 11-32 (which shows a ball at the top of an incline, at the bottom of the incline a loop begins with radius R and Q a point on the loop lined up with the center of the loop), a solid brass ball of mass m and radius r will roll without slipping along the loop-the-loop...
*Tuesday, March 27, 2007 at 8:41pm by COFFEE*

**math - gr 12**

thanks!!!
*Monday, February 23, 2009 at 7:05pm by joanna*

**gr.7 math**

how did you get 4?
*Tuesday, September 15, 2009 at 5:17pm by can someone please help me *

**math gr 7**

1.9s+6=3.1-s
*Tuesday, December 8, 2009 at 6:55pm by Leslie*

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