August 27, 2014

Search: drwls, is this correct,math

Number of results: 106,153

Posted by mota THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------- math - drwls 1000. ----------------------- explain please i want to understand this question :) this is my question i posted ...
March 2, 2008 by mota

drwls, is this correct,math
drawls this is from the previous post is this correct. solve the system by subtraction. 5x-3y=13 4x-3y=11 equation#2 woudl be 4x-3y=11 -3y = -4x+11 y = (4)/(3) x - (11)/(3) so now i substitute it to equation #1 5x - 3((4)/(3)x - (11)/(3)= 13 5x - 4 x +11 = 13 1x + 11 = 13 1x...
February 13, 2007 by jasmine20

Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------------- math - drwls 1000. ----------------------------- explain please i want to ...
March 2, 2008 by mota

music yr 8- re- drwls
thankyou drwls for your help on buddy holly
September 22, 2008 by astra

Drawls, How did you get 2h. and then the 2a/h from.Can you help me understand it when you get a chance. Directions: Solve each literal equation for the indicated variable. A=1/2h(B+b) (For b) Area of a trapezoid For Further Reading math,algebra - drwls, Monday, December 18, ...
December 18, 2006 by jasmine20

Physics check
A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...
July 13, 2010 by Me

thanks drwls i have the correct answer thanks again :)
May 6, 2010 by kiddo

physics-bobpursley/drwls please check
bobpursley/ drwls please help me with my post on Sunday, April 15 at 10:16pm and 10:19pm. Thanks!
April 16, 2007 by Mary

physics: drwls
drwls for the question below, the answer seems to be wrong: The four tires of an automobile are inflated to a gauge pressure of 1.8 multiplied by 105 Pa. Each tire has an area of 0.025 m2 in contact with the ground. Determine the weight of the automobile. It asks for the ...
July 22, 2008 by Elisa

drwls, or other tutors
does my last postage seem correct for the answers that i got. The one that doesn't have a reply. See previous reply to your post.
March 1, 2007 by jas20

I got it! Thank for your help, drwls.
December 10, 2007 by Thanks, drwls

drwls, math
Let me know if i got it correct. for the problem: When x number of units are sold, the price of each unit (in dollars) is given by p =-x/2 +75 . Find the unit price when the following quantities are sold: 2,7,9,11. My answer: for 2= you gave me the answer of $74 This is what i...
December 22, 2006 by jasmine20

Thank u drwls n u obakeng now plz factorise this one. 25x^2-25xy+6y^2
February 25, 2011 by Tshepiso mphehlo

When 1.60 multiplied by 105 J of heat enters a cherry pie initially at 20.0C, its entropy increases by 470 J/K. What is its final temperature (C)? Drwls answered: delta S = entropy change = 1.6*10^5*[1/293 - 1/T2] = 470 Solve for T2 But after I checked the answer, it is not ...
July 26, 2013 by Justin

how do i convert a decimal to fraction in SIMPLEST FORM? a) -2.756 ?? Write out the 0.756 as 756/1000, then reduce it to lower terms if you can. Since both numerator and denominator are evenly divisible by 4, 756/1000 can be reduced to 189/250. The mixed number becomes -2 189/...
February 25, 2007 by sarah

Two 0.09g pith balls are suspended from the same point by threads 40cm long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 cm apart What is the magnitude of the charge on ...
January 25, 2010 by Lanise

2Tons=____oz Try the method DrWLS or I showed you. Then repost if you don't understand but tell us what you are having trouble with.
November 30, 2006 by brooke

Physics - urgent
I already asked this and was given an answer, but I don't fully understand it and so would like a further explanation. What I asked was... An electron is accelerated through a uniform electric field of magnitude 2.5x10^2 N/C with an initial speed of 1.2x10^6 m/s parallel to ...
April 21, 2009 by Linn

Singapore Math
Thanks "drwls" but do you know how to solve that problem using the bar model method? I know what the answer is. I just don't know how to draw it like you do in Singapore math. Thanks...
December 12, 2012 by Ashli

If I wanted to say "My brother was born", could I write "Mi hermano fue nacido"? Yes, but "mi hermano nacio'" is more frequently used Thank you for using the Jiskha Homework Help Forum. Trust drwls. The correct way is to say "mi hermano nació" and be sure there is an ...
December 18, 2006 by Alexandra

If atmospheric refraction did not occur, how would the apparent time of sunrise and sunset be changed? a. both would be later b. both would be earlier c. sunrise would be later, and sunset would be earlier d. sunrise would be earlier, and sunset would be later C drwls told me ...
March 12, 2009 by physics

How much force is needed to accelerate a 50-kg rider and her 250-kg motorcycle at 5 m/s2? This is really a physics question. The equation that you use is Newton's second law, Force = Mass x Acceleration. In this case, the total mass being accelerated is 300 kg. Multiply that ...
June 12, 2007 by kent

ADDITIONAL INO ADDED AT BOTTOM a spectator at a hockey game is sitting in a seat situated 10.4m above ground leve. if the spectator has a mass of 52.6 kg, calculate her gravitational potential energy relative to: a)ground level Eg=mgh =52.6X9.8X10.4 =5360.99J b)the ice surface...
January 31, 2010 by Sarah

Algebra-please check
Could someone please check my solution-Thank you-DRWLS helped me set it up and I solved it, I think From the top of a mountain 150 feet high, Jessie stands at the safety rail on the edge and looks below. The angle of elevation from his bike on the ground to Jessie is 38 ...
January 7, 2011 by Joseph

math help
did anybody answer my question drwls answered your geometry question.
October 3, 2006 by jessica =]

Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that they need to be ...
February 22, 2010 by Sara

3 3/4pt=____c show steps and work please Try the method DrWLS or I showed you FIRST. Repost if you still don't get it but tell us what you don't understand about the procedure.
November 30, 2006 by brooke

thank you for your help drwls
January 27, 2008 by Charles

plz explain or translate this question!!!
How were things resolved? what does this sentence mean? how do you write your answer for this Q? The sentence means there were two or more differing opinions, measurements or explanations about something. You are supposed to find out which is correct, or explain how the ...
December 7, 2006 by ashlee

Thank you very much.
March 6, 2008 by Pam

to DRWLS thanks for the help DEEK./
May 23, 2011 by DEEK

Physics(Please respond)
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 17.4 m/s at an angle of 35.0 above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance...
May 29, 2012 by Hannah

November 8, 2007 by sam

In my last post, I'm confused how drwls got P2/P1 = 14.8
January 8, 2009 by Phil

thankyou for your help its helped me alot you are a star!
October 6, 2009 by dominique

Drwls - totally confused me on how this problem is done. Can someone else help to solve this problem? If two numbers are relatively prime, what is their LCM? Explain the reasoning and give 2 examples supporting the answer.
March 26, 2011 by Brandon

so you are saying that i should label p = 30 i = 0.0125/12 = 0.0010416666666666666666666666666667 n = 12(3) = 36 then plug it into what formula ? Problem: Stereo shack sells a stereo system for $600 down and monthly payments of $30 for the next 3 yrs. In the interest rate is 1...
June 22, 2007 by student

TO drwls
I just wanted to say THANK YOU so much. You're a lifesaver!
February 22, 2008 by Shirley

Thank you for your help, & for the website, makes for some interesting reading.
March 31, 2008 by TJ

To: Drwls
can you please check my previous science post, thanks
March 1, 2010 by Sara

thanks for the answer drwls. can you please explain to me, how it happened?
December 4, 2011 by gem

drwls-year8 geography
thanks for finding that link its helped me with my homework
January 27, 2009 by AMIE

which one of the following statements about sulfuric acid is correct? A. sulfuric acid is a known muriatic acid B. sulfuric acid is a strong oxidizing agent C. sulfuric acid has little effect on metals D. sulfuric acid is dangerous to living organisms B and D are both correct...
August 5, 2005 by alf

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with the second question, ...
November 20, 2010 by Dania

Physical Science
Drwls, would please explain more? I'm not getting this. Thanks
November 2, 2007 by Sarah

Ms.Sue?Sorry To Bother You,I Got SOme New Answers!
120 g = 0.12 kg [DONE] 0.44 kg = 440 g [ is it correct? ] 1.00600 kg = 1,006,000 mg [ correct?] 0.009 kg = 9000 mg [DONE] 0.2 mg = 0.002 g [correct?] 8.6 kg = 0.0086 [correct?] 800 g = 0.8 [correct?] 1.7 kg = 0.0017 [correct?] 6 200 000 mg = 6.2 kg [correct?] thanksss
September 16, 2009 by Cheyenne

Please check my solution bob pursley or drwls if a
If I had the old-fashion camera that had a focal length of 35mm(0.035m) and I take a picture of a person 6 m away, how far does the film need to be from the lens to record a clear image? I know that the equation is 1/f = 1/d(object) + 1/d(image) so would I do the following: 1/...
February 13, 2011 by Robert O.

To: drwls
Can you please have a moment to look at my other science post which you helped me on, thanks
February 8, 2010 by Sara

6a^2+4a+5+3a^2+7a-2 That is the same thing as 9a^2+11a+3, but what is the question? You have just written an algebraic expression, not an equation to be solved. assuming you are required to factorise the equation and the expression give by drwls it factorises to (9a+3)(a+1) ...
January 26, 2007 by chucke

drwls said this is wrong but i don't know what's correct the enregy gained by electrons as they are accelerated by an electric field is a. greater than the average loss in energy due to collissions b. equal to the avergae loss in energy due to collissions c. less than the ...
March 12, 2009 by physics

math 115
1. Nina's car payment is $362.57 per month for 4 years. how much will she pay altogether? $17,401.92 is this correct? 2. solve the unknown. 4/X= 3/15= 60/X is this correct? 3.write 2/5 as a percent. = 40% is this correct? 4. write 78% as a decimal. 0.78 is this correct?
September 5, 2009 by Lea

For drwls
I reposted again down below, if you wouldn't mind looking. Thanks, much appreciated :)
June 28, 2008 by Casey

drwls + Ms Sue geog yr 8
thanks so much to both of you for finding the websites they have helped alot.:)
March 13, 2009 by misha

Thanx DRWLS! Worked like a charm and I checked behind myself with the same formula!!!
November 16, 2009 by Inascent

Good job "Drwls", your answer to my bowling ball question worked. Way to go!
March 17, 2010 by norm

Math drwls please help
Derive the basis functions Ni,3(u) and find the equation for the open quadratic B-spline curve defined by five control points p0, p1, p2, p3, and p4. I know the formula is P(u)= the sum of n,i=0(PiNi,k (u)) it's difficult to type the formula in this text box. I hope you can ...
October 15, 2008 by Mary

drwls, math
Did you mean the following for the problem: 10) perform the indicated operations 3 and 3/4 (divided by ) 1 and 3/8 . 3 3/4 - 1 3/8 . 15/4 (divided by ) 11/8= 30/11 =(after rounding it should be 2.73) thats how it suppost to be and look Yes, that is what I meant. You never said...
November 26, 2006 by Jasmine20

Physics-bobpursley or drwls please check if possib
If I had the old-fashion camera that had a focal length of 35mm(0.035m) and I take a picture of a person 6 m away, how far does the film need to be from the lens to record a clear image? I know that the equation is 1/f = 1/d(object) + 1/d(image) so would I do the following: 1/...
February 13, 2011 by Robert O.

for some reason, choice 6 was incorrect when i tried it sorry to keep bothering you about it drwls
February 20, 2010 by from previous question

I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO: what's the quadratic form of 1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to the left and down 4 ...
March 21, 2007 by charlie

math--pre alg
not sure i did right 3(f+2)+9=13+5f 3f+6+9 = 13+5f +9 3F+15 = 12+5F GOT MIXED UP SOMWERE HELP 3f +6 +9 = 13 + 5f 3f + 15 = 13 + 5f 2f = 2 f = 1 drwls is correct You are doing OK up to this point: 3f + 6 + 9 = 13 + 5f Now combine any like terms. (We can combine 6 + 9 to equal ...
February 28, 2007 by david

Whatwould be the answer 3+9+6+52x963+??? The answer depends upon where you put the parentheses. The order of operation makes a big differnece The answer depends upon where you put the parentheses. The order of operation makes a big differnece I agree with drwls...... But, ...
February 23, 2007 by Crystal

pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john? b)what's the ...
January 23, 2010 by samir

PLEASE LOOK IN THE BOTTOM OF THIS MESSAGE...... solve for x: 3x - 2y = 6 i need help in solving this: the possible answers has to be one of these: A)2y +6 divided by 3 b)3x -6 divided by 2 C) 2 + 2y D) 2/3y + 6 but how i keep trying and i don't get non of these. For Further ...
January 11, 2007 by jasmine20

drwls, if you are there, I got an answer of 42.5 Kelvin, so then that means it is a negative number if converted to degrees Celsius? Question: The heat capacity of a bomb calorimeter is 87.5 kJ/K (this value is for the total heat capacity including that of the water jacket ...
December 12, 2007 by Anne

What is the value of y if x = -3? y = 1 = 2(x-5) Plug in -3 for x, in the equation for y, and see what you get. I think you copied the problem wrong. Is the first = sign supposed to be a + or - sign? If not, you have already stated that y = 1. That cannot be true when x = -3. ...
June 29, 2007 by Ruby

drwls & Damon - maths
hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx
December 29, 2007 by xX_Supaman_Xx

Thanks for the answers but I must show the work for each problem. Can someone please help now that I finally submitted the square root correctly,thanks to drwls, and Ms. Sue. Thank you The slash (/) line represents that the number is a fraction. divide: sqrt45 / sqrt81 = ...
October 29, 2011 by PLEASE HELP

Physics- drwls please help
A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 x 10^2 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 x 10^2 rpm. Find the magnitude of the average angular acceleration of the...
March 14, 2007 by Mary

math 115
1. a bedroom is 10ft. by 11ft. what is the perimeter? = 21ft. is this correct? 2. Find the prime factorization of the number 40 = 2X2X2X5= 40 is this correct? 3. perform the indicated operatio. 6 2/9 + 1 3/4 - 3 5/6 = 4 5/36 is this correct?
September 5, 2009 by Lea

Maths Check
Can Please someone check as per below I posted this yesterday and Drwls Answered and I post back the solution. Thanks Amortization of a $1000 Loan Interest Monthly payment rate 15yr 20yr 25yr 30yr 9.5% $10.45 $9.33 $8.73 $8.41 10.0% $10.75 $9.66 $9.09 $8.78 10.5% $11.06 $9.99...
March 13, 2008 by Jen

Math 2
You should make two selections from the list below. Which two of the four equations represents parallel lines? 2x - 3y = -10 6x - 9y = 15 3x + 2y = 10 9x + 6y = 30 i think it's the second one Parallel lines have the same slope. Rework your equations to be in the form y=mx + b ...
November 7, 2006 by Francheska

One for drwls
Thank you for answering my question. Can you steer me to making a quadratic from 1/4(x+3)^2-4 Then I can get the intercepts. Thanks Just multiply it out to put it in the standard form, ax^2 + b^2 + c (1/4)(x+3)^2-4 = (1/4)(x^2 + 6x + 9) -4 = (1/4)x^2 + (3/2)x - 7/4 You're a ...
March 21, 2007 by charlie

By default, your numerical entry is scored as correct if it is within 1% of the correct answer. A rule of thumb is always to enter at least 3 digits for numerical questions. If the correct answer is 7.08809, which of the following entries would be counted as correct? 7.024 7....
September 12, 2011 by ashley

Physics..=> drwls - I need your help
I need help seeing if my thoughts are correct and how to do some things. Block 1 of mass 0.200 kg is sliding to the right over a frictionless elevated surface at a speed of 8.00 m / s. The block undergoes an elastic collision with stationary block 2, which is attached to a ...
February 26, 2008 by ~christina~

Please drwls solve it for me two equal charges of magnitude 0.00000000032 is placed in an electric field. calculate the force of attraction between them
November 5, 2012 by Drift

Thanks for the help DRWLS. I tried to work is out and came up with this working out: A(4,-2) is parallel to 2x-3y=7 y = mx + c -3y = -2x + 7 y = 2/3x - 2 1/3 (y-y*) / (x-x*) = m (y+2) / (x-4) = 2/3 y+2 = 2/3(x-4) y+2 = 2/3x - 2 2/3 y = 2/3x-2 2/3 - 2 y = 2/3x-4 2/3
March 15, 2008 by Mel

thanks for your help i would have labelled my question geology but it is for geography sorry
February 8, 2011 by polly

Math Inequalities
-9/8x greater than or equal to -1/16 can someone please check my answer? my answer is x greather than or equal to 1/18 is this correct? if not what is the correct answer and what is the correct way to solve this problem..maybe I missed a step or did not do math correctly....
November 5, 2009 by Anna

cAN YOU LOOK AT THE PREVIOUS POST. i am completely lost towards that do i even solve it because then i would have to cross multiply or cancel and that will give me zero.
February 25, 2007 by jas20

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
April 10, 2012 by Malika

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
April 10, 2012 by Malika

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
April 10, 2012 by Malika

HEY DRWLS!! I have a question
You're a genius, so can you please help me with my advanced algebra question. I posted it down below!! Thanks:) Miley
January 29, 2008 by Miley

drwls history
please could i say a huge thankyou you have helped me alot and i appreciate it thankyou again you are a star! :]
October 17, 2010 by kellie

Find the distance using the appropriate arch length. A television tower 520m high subtends an angle of 2deg30'. How far away is the tower? some people that helped me alot were Reiny, Damon, bobpursley, and i just wanna say thnks to you guys...are u guys math expersts...
January 16, 2009 by y912f

Physical Science (repost for drwls)
OK, I've been trying my best and for 3 I got B and for five I got B...? 4 still seems really tricky to me! -MC
May 3, 2009 by mysterychicken

drwls, math ,algebra
should i take then away the 1, and 16 from the question of the listing all the factors of 16. so i should leave it as: list all the factors of 16: 2,4,8 I would leave out 1 and 16, since the pair is obvious and does not divide up the number 16 into smaller integers. I can't ...
December 17, 2006 by jasmine20

To drwls
I posted some Physics questions yesterday, but no one got the chance to look at them, so can u please go to 2nd page and look through them.
November 23, 2010 by Anabelle

Simplify: a) 8^2 = 64 ... correct? b) 8^-2 = 1/8^2 ... correct? c) (1/8)^2 = 1/64?? d) (1/8)^-2 = 1/64?? e) -8^2 = 64?? f) (-8)^2 64?? Please let me know if these are correct. Thank you!
August 22, 2010 by anonymous

drwls i replied!
i replied and I answered below.
November 7, 2006 by Francheska

for: drwls -Dr.Russ
Is there a 'Dr.Russ' that can help with Organic Chem?
March 12, 2008 by K

Physics to drwls question to answer given earlier
A 0.700-kg ball is on the end of a rope that is 0.90 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0 with respect to the vertical as shown. What is the ...
February 17, 2012 by Angelina

Thank you i think im getting somewhere a however, what about -8 x (-4) = -32 am i correct? Ok is this one correct? Also is there a math expert to whom we will pay a decent hourly wage to tutor me?
January 28, 2012 by zavier

Math- repost
This is a geometry question about disjunctions. The symbol "v" represents "or". "~" stands for "negation of" Here are two questions I need help with: 1. When p v ~q is false, then p is ______ and q is _____. I think "false" belongs in both spaces. 2. When ~p v q is false, then...
September 28, 2008 by Anonymous

how do you solve 45 min/2 mi=?h/1 mi pre algerbra - drwls, Friday, January 6, 2012 at 11:44pm If you go 2 miles in 3/4 hour, you go 1 mile in 3/8 hour (or 22.5 minutes). how do we show are work then
January 7, 2012 by steph

Re: Physics/Math
A can of sardines is made to move along an x axis from x1 = 0.2 m to x2 = 1.2 m by a force given by F = iF0exp(-0.4x), with x in meters and F0 = 4.5 N. (Here exp is the exponential function.) How much work is done on the can by the force? For Further Reading * Physics/Math - ...
March 2, 2007 by Technoboi11

A rectangular pad of concrete is outlined by a 52-m stripe of paint. Find the dimensions of this pad if the surface area is 168m^2. drwls: Is there any way you can explain why you did what you did? I don't understand. You had this: 2 (L + W) = 52 (perimeter) L*W = 168 (area) 2...
February 3, 2010 by Kaylee

A 20N crate starting at rest slides down a rough 5.0m ramp, inclined at 25 degress with the horizontal. 20j of energy is lost due to friction. what will be the speed of the crate at the bottom of the incline? i need some help these one i dont know where to start For Further ...
October 24, 2007 by magic 8 ball

I would just like to sat thanks to drwls for helping me a bunch with the physics questions...AP physics is pretty hard..thanks again, whoever you are.. I am sure i will be back plenty of times!
September 10, 2007 by Kristen

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