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November 23, 2014

Posts by caroline


Total # Posts: 253

please help! physics
A 1200 kg car is moving at 95 km/h when the driver notices a deer down the road. He immediately moves his foot toward the brake pedal, taking only 0.50 seconds before the car starts slowing down. The brakes cause a net force of 2400 N (backwards) on the car for 2.0 seconds. ...
October 21, 2014

Geology
Hi, I am doing a geology course and I am really struggling with the topography graph. Currently, I am doing a test/quiz that involves me finding out what the contour interval is,the elevations of lines, and so on. I have tried looking back over the information but it is ...
July 18, 2014

Math Homework: Check Answers
Thank you!
May 27, 2014

Math Homework: Check Answers
1. Suppose you earned 8t - 3 dollars on Monday and 6t + 5 dollars on Tuesday. What were you total earnings? Simplify your answer. A) 2t + 2 B) 2t - 8 C) 14t + 2 D) 14t - 8 Answer: A 2. f^2 • f^4 A) (2f)^8 B) (2f)^6 C) f^8 D) f^6 Answer: D 3. 100^12/100^8 A) 100^12/8 B) ...
May 27, 2014

Data Management
Emilio has played ten rounds of golf this season. His mean score is 80 and standard deviation is 4. Assume Emilio's golf scores are normally distributed. a) Find the 95% confidence interval of Emilio's mean golf score b)Find the 95% confidence interval of Emilio's ...
May 14, 2014

physics
A square loop of wire of side 2.8 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 43° with the plane of the loop. (a) What is the magnitude of the torque on the loop? (b) What is the net magnetic force on the loop?
May 13, 2014

physics
What is the average linear speed of the Earth about the Sun? (The distance from the Sun to the Earth is 1.50 1011 meters. The orbital period around the Sun is 365.3 days.)
May 12, 2014

Algebra 1
Can you please check my work? A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample, bipartisan sample, or ...
April 27, 2014

Algebra 1
Will you please check my work? :) Choose ALL (if any) applicable terms for the events described, then calculate the probability of the events. Jason has a cube with colored sides: red, orange, yellow, green, blue and purple. 1. Rolling a red or a primary color. Choices: ...
April 27, 2014

Algebra 1
Thanks :)
April 27, 2014

Algebra 1
Can you please check my work and help me with the parts that I don't understand? For each event, choose the most appropriate term and solve the problem. 1. In a sweepstakes with nine hundred entries, the first winner selected receives the grand prize, the second receives ...
April 27, 2014

Chemistry
Write the balanced net ionic equations for the reactions of the halogens with copper metal. The halogens are oxidizing agents and the copper metal is a reducing agent. a) Bromine (Br2)+copper metal (Cu) b) Iodine (I2) + copper metal (Cu) Based on your observations and ...
April 16, 2014

math
What is 8% of 15?
April 14, 2014

Math Polygons
I am a closed shape made of 6 line segments. I have 2 angles less than a right angle and no right angles. What shape am I? Draw an example in the workspace.
March 19, 2014

Chemistry
a solution is prepared by dissolving 22.0g of NaOH in 117.0g of water. The NaOH solution has a density of 1.15 g/mL. what is the Molarity(M) of the solution.
March 14, 2014

ALGEBRA! URGENT.
1. What data are represented by the stem-and-leaf plot below? 3 | 7 8 9 4 | 1 3 7 5 | 2 4 Key: 4 | 1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54 b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the mode and the median of the ...
March 5, 2014

Math Help? Check my answers.
Ms. Sue? Can you help me with this?
March 5, 2014

Math Help? Check my answers.
Help please! :)
March 5, 2014

Math Help? Check my answers.
1. What data are represented by the stem-and-leaf plot below? 3 | 7 8 9 4 | 1 3 7 5 | 2 4 Key: 4 | 1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54 b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the mode and the median of the ...
March 5, 2014

life orientation
identify three study fields/career paths in order of preference and provide two reasons for each choice
March 5, 2014

Molecular cell Biology
The following chemicals have the indicated formula weights:Sucrose-342.3,Potassium dihydrogen phosphate(KH2PO40-136.09,Tris -121.14.You also have the following solutions made:20%SDS,5M NaCl,500mM EDTA.You have a 40%glycerol solution and 10X TBE.List the steps to make the ...
January 18, 2014

Math
If you can buy three raffle tickets for $5, how many tickets can you buy for $55? I need to know to different ways to solve this problem...
November 13, 2013

physics
I am having a really hard time figuring this question out, would somebody be able to help me? Imagine a giant dry-cleaner's bag full of air at a temperature of -35∘C floating like a balloon with a string hanging from it 12km above the ground. Estimate what its ...
August 5, 2013

PreCalculus
Could someone check these? I'm finding the magnitude for 5 and 6. 5. v=3i+j My magnitude is 3.16 6. v=2i+3j My magnitude is 3.61 For 22 and 23 I'm finding each specified vector or scalar. u=2i-5j, v=-3i+7j, w=-i-6j 22. v+w answer: -4i+j 23. u-v answer: 5i-13j
June 10, 2013

PreCalculus
I'm having trouble with these problems.. Could someone please explain how to find the domain of either of these functions? 3. f(x) =(x-2)/(x^2+6x+8) 7. g(x)= sqrt[(9)/(x+3)]
June 10, 2013

English
Jane Eyre. And I was leaning towards B because when I think of gothic elements I think of words like demonic, fiery, passion/love, mystery...
May 26, 2013

English
Which of the following is NOT a Gothic element in this novel? A. the low, demonic laugh in the hall at midnight B. strange laughter in a hidden, upstairs room C. the mysterious fire in Rochester’s bedroom D. the young Jane’s growing love for the older, moody ...
May 26, 2013

Pre-Calculus
I'm having trouble with this problem because I'm not sure what to do with the 1.. 21. (x-5)^2+(y+2)^2=1 (x-(5))^2+(y+2)^2= ???? center= (5,2) radius= ???
May 10, 2013

Pre-Calculus
I'm currently working with parabolas, and I'm not sure if I am doing this specific problem correctly.. 12. x= y^2-6y+6 y= -b/2a = 6/2(1)= 6/2= 3 x= (3)^2+6(3)+6 x= 33 y=3 (33,3) <--- what I graphed
May 10, 2013

Pre-Calculus
45. log b sqrt 7x 46. log b sqrt (3/y) Could someone please explain these?
May 5, 2013

Pre-Calculus
My book doesn't explain how to do these problems.. The examples they tell me to refer to have no relevance whatsoever. Any help would be appreciated. Use the power property to rewrite each expression. 17. log_3(x)^2 18. log_2(x)^5 19. log_4(5)^-1 20. log_6(7)^-2
May 5, 2013

Pre-Calculus
Thank you
May 1, 2013

Pre-Calculus
Could someone check my answers? 25. 32^(2x-3)=2 Answer- x= 8/5 26. 9^(2x+1)=81 Answer- x= 1/2 27. 1/4=2^3x Answer- x= -2/3 28. 1/27=3^2x Answer- x= -3/2 29. 9^x=27 Answer- x= 3/2 30. 32^x=4 Answer- x= 2/5 31. 27^(x+1)=9 Answer- x= 1/2 32. 125^(x-2)=25 Answer- x= 7/2 33. 81^(x-...
May 1, 2013

Pre-Calculus
I'm having problems understanding how to do these problems. 25. 32^(2x-3)=2 27. 1/4= 2^3x 29. 9^x=27 33. 81^(x-1)= 27^2x
April 26, 2013

World Geography
Cultures often develop along with science and ____________.
April 23, 2013

Pre-Calculus
Thank you for your help
April 22, 2013

Pre-Calculus
Could someone check my answers? 27. (16/9)^2/3 = 64/27 28. (49/25)^3/2 = 343/125 31. (-64)^2/3 = 8 32. (-8)^-4/3 = 1/16 or -1/16
April 22, 2013

Excel
Which option must be selected for all sheets within a workbook to be printed?
April 16, 2013

Pre-Calculus
Thank you both!
April 10, 2013

Pre-Calculus
I'm having trouble understanding how to do complex fractions.. My book doesn't explain it very well.. 12. (x+3/12)/(4x-5/15) 14. (2/x^2 + 1/x)/(4/x^2 - 1/x) 16. (1/y + 3/y^2)/(y + 27/y^2) If you could please explain how to begin the process I would appreciate it.
April 10, 2013

World Geography
For ques. #2 i have (b) is that correct Ms Sue?
April 5, 2013

Math
I have some white and black marbles in a box. There are 30 white marbles. There are 14 more white marbles than black marbles. How many black marbles do I have?
April 5, 2013

Physics
Nicole throws a ball straight up.Chad watches the ball from a window 5meters above the point where Nicole released it . The ball passes Chad on the on the way up, and it has a speed of 10m/s as it passes him on the way back down.Determine how fast Nicole threw the ball upwards
April 4, 2013

trig
An airplane pilot wishes to maintain a true course in the direction 250° with a ground speed of 400 mi/hr when the wind is blowing directly north at 60 mi/hr. Approximate the required airspeed and compass heading
April 1, 2013

Math
Gertrude and Ernest received their typing results. The results are normal and are shown below. Types Of Errors per Page Gertude - (Mean) 10 Standard Deviation- 1 Ernest - (Mean) 10 Standard Deviation- 4 Which statement is true? A. Gertrude probably has more pages with exactly ...
March 30, 2013

Math
Susan owns a chocolate store. She sells her chocolate by the gram and needs to compare the weights of two chocolate batches. She randomly selects 100 pieces from each batch. The distrubition of both samples are normal. Batch 1 - (Mean Weight) 56 grams Standard Deviation - 6 ...
March 30, 2013

E
Which is the best way to learn new material? A. Use techniques that appeal only to your preferred learning style. B. Review notes every day. C. Consistently study the same way. D. Use techniques that appeal to all three learning styles
March 28, 2013

chemistry
how many moles of O2 are contained in 6.53 L with 297 K and 6.6 atm
March 26, 2013

Maths
Ray and Roxanne leave from the same spot for their morning run. Roxanne runs due North at 8 km/h while Ray runs due East at 11 km/h. Find the distance and bearing of Roxanne from Ray after 20 minutes. Round your answers to one decimal place.
March 19, 2013

Pre-Calculus
How would I write this in exponential form? log(3)1/27= -3
March 15, 2013

Pre-Calculus
*** final answer 3+5/4(3x-5) 3+5/12x-20
February 27, 2013

Pre-Calculus
Simplifying Complex Fractions [(x+3)/12] / [(4x-5)/15] [(x+3)/12] x [15/(4x-5)] (x+3)5/4(3x-5) (5x+15/12x-20)<-- final answer Did I do this right. If not could you please explain how to do it correctly
February 27, 2013

science
I think it is gravity but its probably wrong because I suck at science and I get like B's and hardly A's
February 6, 2013

PHY 101
An archer aims an arrow precisely horizontally over a large, flat field and lets it fly. At the same instant, the archer's watchband breaks and the watch falls to the ground. Does the watch hit the ground before, at the same times as, or after the arrow hits the ground? ...
February 5, 2013

Pre-Calculus
Could you please explain how to use a matrix (matrices) to solve a system of linear equations (two variables)? My book doesn't explain it in a way I can understand. Please and thank you.
January 24, 2013

Pre-Calculus
Thank you.
January 22, 2013

Pre-Calculus
Thank you so much.
January 22, 2013

Pre-Calculus
Solve by using the substitution method 1.x=-3y+4 and 3x+9y=12 3(-3y+4)+9y=12 -9y+12+9y12 0=0 x=-3(0)+4 x=4 Would there be infinite solutions or would it be (0,4)? 2. x=3y-1 and 2x-6y=-2 2x-6y=-2 2(3y-1)-6y=-2 6y-2-6y=-2 0=0 x=3y-1 x=3(0)-1 x=-1 Would there be infinite ...
January 22, 2013

Pre-Calculus
I have to use the substitution method to solve the system of equations. 4x-y=9 and 2x+3y=12 I worked this problem myself and could not find a possible solution. So I put that it is inconsistent. Is that correct? If not could you please help me?
January 22, 2013

Pre-Calculus
If you solve the following system of equations by substitution, which statement is true? x = z x - 2y + z = 6 2x + y - 2z = 1 A. You can substitute z for x into the second and third equations. B. You can substitute x for z into the second and third equations. C. Both methods ...
January 22, 2013

Pre-Calculus
What they did in their example is substitute x with one. I wasn't exactly sure why they were doing that so I came on here in hopes that someone could better explain it. Thank you!
January 22, 2013

Pre-Calculus
State the domain and range of the relation y = 2x + 3 My answer: y= 2x+3 y= 2(1)+3=5 domain: 1 range: 5 This is how my book showed me how to do it. I just wanted to make sure I did it right. If not could you please give me an example?
January 22, 2013

Pre-Calculus
Driving down Bald Mountain in Wyoming, Bob dean finds that he descends 1600 feet in elevation by the time he is 2.5 miles (horizontally) away from the high point on the mountain road. Find the slope of his descent (Hint: 1 mile = 5280 feet) After converting the miles to feet I...
January 10, 2013

Spanish 2
Ms.Sue thanks for sending it to the expert. And SraJMcGin thanks so much for taking a look at it and helping me. I'm going to speak with her. Thanks so much and sorry about the separated answers.
January 3, 2013

Spanish 2
I turned these in and my teacher said all my answers were wrong. I'm so confused because when I go through my chapter it says differently.Can someone please help?! A. Supply the correct form of the adjective. 1. rojo Hay una pluma _____ encima de la mesa. 2. alto La chica ...
January 3, 2013

jmhs help
B. An individual can learn using only his or her preferred learning style.
December 13, 2012

Physics
A force compresses a bone by 0.10mm. A second bone has the same length but twice the cross-sectional area as the first. By how much would the same force compress the bone?
December 9, 2012

Science Help!
A light beam has a frequency of 5 x 1015 Hz. What is its wavelength?
November 13, 2012

Science
1. A certain radar installation transmits electromagnetic radiation with a wavelength of 2.5 cm. What is the frequency of this radiation? 2. For the radar above, how many seconds will it take for a signal to reach an airplane 15 km away, and return to the radar installation
November 13, 2012

Calculus
A differentiable function f(x,y) has the property that f(2,2)=2 and fx(2,2)=1 and fy(2,2)=2. Find the equation of the tangent plane at the point on the surface z=f(x,y) where x=2, y=2.
October 17, 2012

science/math/physics
A shopper pushes a cart 41 m south down one aisle and then turns 90.0° west and moves 28 m. He then makes another 90.0° turn and moves 14 m. (a) What is the largest possible displacement of the shopper? ____m ___° counterclockwise from west
October 3, 2012

7th grade science Ms. Sue please help if you can
I'm pretty sure 5 is right. I think the answer would be "altitudes". Which isn't a choice.
September 28, 2012

Algebra 2
Absolute Value Equations Will someone please check to see if I am doing this correct? 1.|7x+2|=10 x= (8/7) or (-12/7) 2.|3x-5|=-1 I got "no solution" because "d" cannot be negative. 3.|x^2-2x-16|=8 x= 6,-4 or x=4,-2 4.|3x-2|=7 x= 3 or (-5/3) 5.|x^2+2x+1|=-4...
September 19, 2012

Algebra 2
5/(2y+6)+1/(y-2)=3/(y+3)?
September 18, 2012

Algebra 2
√(x-10)+4=0
September 18, 2012

Algebra
(2x+3)^(1/2)=4 (5x-5)^(2/3)=16
September 18, 2012

Algebra 2
[(8x^5)+(10x^4)]-[(4x^3)-(5x)]=0
September 17, 2012

Algebra 2
3n^4-4n^2=-1
September 17, 2012

Algebra 2
x-3x^1/2+2=0
September 17, 2012

Algebra 2
6X^(2/3)-5X^(1/3)-6=0
September 17, 2012

Algebra 2
6X^(2/3)-5X^(1/3)-6=0
September 17, 2012

Algebra 2
x-3x^(1/2)+2=0
September 17, 2012

Finance
During a job interview, Pam Thomson is offered a salary of $28,000. The Company gives annual raises of 6 percent. What would be Pam's salary during her fifth year on the job?
July 27, 2012

math
ok i have 10th grade math next year and i dont even know half the stuff for this year and its summer brake and im worrying about math..what do i do
June 14, 2012

angebra
ok i have 19th grade algebra next yeah and i dont even know half the stuff from thid year...soo what di i do cuz i am totsly going to fail i mrn itd summy snd im worried about algebra
June 14, 2012

Chemistry
the mass of the crucible is 19.73 g fill the crucible with CuSO4 which was 26.44 g Heat the crucible until the water is released it weighed 23.40 g So now, how many moles of water is removed? The number of moles of CuSO4 that after dissolution rest? determine the number of H2O...
June 6, 2012

physics
A vertical tube with a tap at the base is filled with water, and a tuning fork vibrates over its mouth. As the water level is lowered in the tube, resonance is heard when the water level has dropped 18 cm, and again after 54 cm of distance exists from the water to the top of ...
March 28, 2012

physics
If you drop a stone into a well that is d = 122.0 m deep, as illustrated in the figure below, how soon after you drop the stone will you hear it hit the bottom of the well?
March 28, 2012

physics
If you stand on a bathroom scale, the spring inside the scale compresses 0.50 mm, and it tells you your weight is 680 N. Now if you jump on the scale from a height of 1.4 m, what does the scale read at its peak?
March 2, 2012

Health Science
What would be some examples of dilemmas which affect the health promoting work of the podiatrist?
January 13, 2012

English
What is another way to say 'make an informed choice'?
January 11, 2012

English
hmm yeah but this relates only to physical health, what about other concepts of health such as emotional, social, spiritual, mental etc
January 9, 2012

English
hey, I have to write an essay about ''challenges posed by differing concepts of health held by healthcare professionals and the general public'' I don't really know what to talk about. I started by explaining what health is but what challenges might be there?
January 9, 2012

Biology
what does this mean: the rate of blood flow to an organ is related to resistance to flow in the small arteries and arterioles
December 7, 2011

Learning
exactly, it seems very confusing. Well the question states : write a few paragraphs highlighting changes (both positive and negative) that enhance learning -- i missed that day at school but i was told the question is referring to the skills and i just dont know what to write ...
December 2, 2011

Learning
I have to write a few paragraphs on the changes in the skills (both positive and negative) that enhance learning. Now, I wrote a good bit on the positive changes such as improvement in the IT skills, communication, time management etc but what could be the examples of negative...
December 2, 2011

math
what is one fourth of eight
November 30, 2011

English language
what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant ...
November 29, 2011

english
A. a desk stocked with supplies. B. a relaxing area such as your bedroom. C. ample amounts of natural light. D. comfortable and balanced temperature
November 21, 2011

Math
Prove these identites I really need help with these I dont understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2 +sin^2=tan^2+sin^2
November 17, 2011

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