# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 789
1. ## Math

Im really struggling with these proving identities problems can somebody please show me how to do these? I'm only aloud to manipulate one side of the equation and it has to equal the other side of the equation at the end Problem 1. (1-tanx) =

asked by Alycia on November 1, 2012
2. ## Chemistry

We did a lab for acid-base titrations, and I'm having trouble with my post lab questions because I had trouble with acid-base reactions and titrations in the first place! "Calculate the molar amounts of NaOH used in the reaction with the HCl solution and

asked by Rachel on April 21, 2007
3. ## Chem answer check

Does this look correct? Thx! Write the balanced equation for the reaction between solid copper and silver nitrate, that produces solid silver and copper(II) nitrate in solution. Include your experimentally determined mole ratios for the copper and silver

asked by Kelsey on February 15, 2010
4. ## Chemistry

You are asked to prepare a pH=4.00 buffer starting from 1.50 L of 0.0200 \; M solution of benzoic acid C_6 H_5COOH and an excess of sodium benzoate C_ H_5 COONa. How many grams of sodium benzoate should be added to prepare the buffer? Neglect the small

asked by Josh G. on November 22, 2012
5. ## US History

I am having a really hard time with this assignment. Can anyone cross check my answers? Thank you 1.The term participatory democracy applies most accurately to which of the following societies? A. Greece in the fourth century B.C. B. Modern China C. The

asked by Mike on July 4, 2018
6. ## spanish

I have to fill in the gap with an adjective and i am really stuck on these questions: 1)Es........asomarse a la ventanilla 2)Carmen está...... le duele la cabeza 3) En la mano ......... llevo dinero, y en la no llevo nada. 4)Qué olor! El pescado no esta

asked by Emma on June 4, 2007
7. ## Physics

At a certain instant, a particle-like object is acted on by a force F = (4.0 N) - (2.0 N) + (9.0 N) while the object's velocity is v = - (2.0 m/s) + (4.0 m/s) . What is the instantaneous rate at which the force does work on the object? At some other time,

asked by Hariett on June 1, 2010
8. ## Physics

(a) At a certain instant, a particle-like object is acted on by a force F = (3.0 N) - (1.0 N) + (8.0 N) while the object's velocity is v = - (2.0 m/s) + (4.0 m/s) . What is the instantaneous rate at which the force does work on the object? W (b) At some

asked by Frankie on July 22, 2010
9. ## Physics

You push your couch a distance of 3.8 m across the living room floor with a horizontal force of 180.0 N. The force of friction is 136.0 N. What is the work done by you, by the friction force, by gravity, and by the net force? you 1 friction force 2 gravity

asked by Gina on September 21, 2010
10. ## L.A. 5th grade

What is the meaning of the prefix -ion in civilization? Also, check my work - Civilization prefix suffix and root Prefix - civ- citizen Suffix- ion - ?? Root- civilization- cultural location Plzzz ASAP!!!!!!

asked by Jelena on April 26, 2016
11. ## physics

(a)At a certain instant, a particle-like object is acted on by a force F = (4.0 N)i - (2.0 N)j + (9.0 N)k while the object's velocity is v = - (2.0 m/s)i + (4.0 m/s)k . What is the instantaneous rate at which the force does work on the object? (b)At some

asked by sel on March 15, 2010
12. ## Ms. Sue (Health)

I have already put what I think are the correct answers. I was wondering if you could help me again like you did that last time. I REALLY appreciate your feedback. 1- The process of breaking a complex substance down into smaller components is called? A-

asked by B B on May 1, 2010
13. ## Physics

A popular carnival ride consists of a large, round room that rotates fast enough that any person standing against the wall will be stuck there, even as the floor is dropped away from their feet. The coefficient of static friction between the person and the

asked by Zac on July 26, 2012
14. ## physics

Two protons and two positrons form a square as shown in the figure. All the particles are initially at rest. Due to Coulomb's repulsion, the particles fly off to infinity. Determine the ratio vp/ve where vp and ve are the final velocities of the protons

asked by raj on February 21, 2013
15. ## physics

A 35 micro coulomb point charge is placed 32 cm from an identical 35 micro coulomb charge. How much work would be required to move a 0.50 micro coulomb test charge from a point midway between them to a point 12 cm closer to either of the charges? i got an

asked by lauren on February 11, 2016
16. ## History

How has the Republic of Armenia’s recognition of the Armenian genocide impacted the country’s economy? a. The Republic of Armenia’s economy has suffered due to the border it shares with Turkey. b. The Armenian national currency has become inflated

asked by Sergio on February 20, 2019
17. ## chemistry-mostly for bobpursley- I have a question

ok i made a post with this question earlier: A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the mass of a carbon nucleus? u responded with this formula: 6*massproton+6*masscarbon=n*masselectron look up the

asked by Sarah on September 20, 2010
18. ## AP Physic

Hi there I am having a lot of trouble trying to figure out this homework problem and I really need help. This problem is dealing with wave motion and I do not know how to set up the formula to get the correct answer. Please help me and show some steps how

asked by shylo on January 16, 2010
19. ## Algebra 1- Virtual School

can anyone help! I have no clue how to do this.. PART 1: Use complete sentences to describe a real-world scenario that could be represented by the inequality 5x + 2y 45. PART 2: Choose one ordered pair that is a solution to the given inequality and explain

asked by Vee on February 6, 2011
20. ## Algebra 1

can anyone help! I have no clue how to do this.. PART 1: Use complete sentences to describe a real-world scenario that could be represented by the inequality 5x + 2y 45. PART 2: Choose one ordered pair that is a solution to the given inequality and explain

asked by Vee on February 6, 2011
21. ## chem

.070g caffeine dissolved in 4 mL water. caffeine is extracted from aqueous solution 3 times with 2mL portions of methylene chloride. calculate total amount of caffeine that can be extracted into the 3 portions. caffeine has a distribution coefficient of

asked by j on February 8, 2010
22. ## Chemistry

Larry has 250.00 ml of water. The water currently holds the maximum amount of soluble Silver iodide. In a separate container, Larry has 96 ml of a 0.07M solution of sodium carbonate. He wants to precipitate out all of the silver. Of his 96 ml, how much

asked by John on September 7, 2016
23. ## Algebra 1-- Please, check my answers!

1. What is ((-12x^6 + x)) / ((-4x^2))? A: 3x^4 - 1/4x 2. What is the greatest common factor of the terms of the polynomial 6x^3 - 18x^2 + 12x + 3? A: 3? 3. Which is a solution to n/n+2 = -8/n? a. -4 b. -2 c. 2 d. 4 A: a? 4. Which of the following is

asked by Victoria on June 10, 2014
24. ## algebra

How do you write a real-world scenario that could be represented by the inequality 4x + 2y 40 and how are you supposed to choose one ordered pair that is a solution to the given inequality and explain what that ordered pair means in the context of your

asked by Ka'Sandra on August 11, 2010
25. ## chem

.070g caffeine dissolved in 4 mL water. caffeine is extracted from aqueous solution 3 times with 2mL portions of methylene chloride. calculate total amount of caffeine that can be extracted into the 3 portions. caffeine has a distribution coefficient of

asked by j on February 8, 2010
26. ## math

The table below shows the temperature in degrees for eight consecutive days as well as the respective number of ice cream cones an ice cream shop sold on each of these days. what is the correlation coefficient of the set of data? tempurature=

asked by checkmywork on January 17, 2018
27. ## capstone class, management

Scenario: You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what

asked by Crystal on August 3, 2010
28. ## resume

I am not a english speaker!!!!!!!! i am writing a resume is this statement correct: I am introducing my work: Student focus teaching professional with instructional experience and multicultural knowledge. Currently one of three teachers at Grovetown High

asked by rita on February 23, 2013
29. ## statistics

Looking for help with some of my stats homework, I got parts of it but then hit a brink wall. Any help would be welcome. A recruiter estimates that if you are hired to work for her company and you put in a full week at the commissioned sales representative

asked by Valerie on November 1, 2010
30. ## SCI 275

air pollution, global warming, ozone depletion, and acid deposition. Then, respond to the following: • What air pollutants combine and contribute to this issue? • Briefly describe the health and environmental problems caused by the selected atmospheric

asked by dawn on November 27, 2007
31. ## Chemistry

Benzene reacts with hot concentrated nitric acid dissolved in sulfuric acid to give chiefly nitrobenzene, C6H5NO2. A by-product is often obtained, which consists of 42.86% C, 2.40% H, and 16.67% N (by mass). The boiling point of a solution of 5.5 g of the

asked by Luke on July 15, 2014
32. ## English

I need you to check the question and my answer to it. Shall I include more details in the question? In sentences 3 and 5 I don't know which connectors to use (to express a contrast between two different concepts). How can't find a suitable verb to finish

asked by Henry2 on June 26, 2011
33. ## physiology

Heres the scenario: You stop at McDonald's and buy a Sausage Biscuit. Thinking about the chemical breakdown of foodstuffs, these are the questions... 1) what the main food molecule is in each part of the sandwich 2) where in the digestive tract each part

asked by csumicro on December 10, 2006
34. ## maths

Alan is using matchsticks to make isosceles triangles. Isosceles triangles have at least two sides the same length.How many different single isosceles triangles can he make with 45 matchsticks, using all the matchsticks each time? The answer is 11, but I

asked by LARA on November 6, 2013
35. ## programming

write a program in C# that calculates and prints the take home pay for a commissioned sales employee. allow the user to enter values for the name of the employee and the sales amount for the week. employee receives 7% of the total sales. federal tax rate

asked by Anonymous on September 23, 2011
36. ## math

Martha is covering kitchen shelves with shelving paper. She has 6 shelves that are each 1 ¾ feet long. She buys 13 ¼ feet of shelving paper of the correct width. Which equation can be used to determine how much paper she will have left over? would that

asked by treshia on October 15, 2014
37. ## Maths

Use the binomial series to find the Taylor series about 0 for the function f(x) = (1 + x)−3/5, giving all terms up to the one in x4. I have the answer; f(x)=1-3/5(x) +12/25(x^2) -52/125(x^3) + 234/625(x^4) but i am not sure how to work out the interval

asked by s17 on April 24, 2016
38. ## maths

A town planner is using a map of a town centre with a scale of 1: 1250 A path in the town is 8cm long on the map. How long is the path in the town? Give your answers in metres. how do i work this out?? set up the proportion: 1/1250 = 8/x x=1250*8 cm =

asked by k on May 9, 2007
39. ## math

Prove the validity of cross products by example/words. (Why does it work as a strategy?) Is this right?: One way to find out whether ratios are equal, is to find a common denominator. Ratios are equal if their numerator and denominator are equal. It is a

asked by Anya on November 16, 2009
40. ## College Physics

A 4.55-kg ball of clay is thrown downward from a height of 3.13 m with a speed of 4.41 m/s onto a spring with k = 1690 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping. a) Find the maximum compression of the spring.

asked by Emma on February 20, 2011
41. ## help i have no idea!!!!!!

Time (s) 0 1 2 3 4 5 7 8 9 10 Δ X (m/s) Position 0 3 7 12 17 24 22 17 14 14 1. Graph the table above (include title, label the independent (x) and dependent variable (y), use the proper scale) 2. Identify on your scale the positive acceleration and the

asked by Anonymous on March 5, 2014
42. ## sue

Time (s): 0 1 2 3 4 5 7 8 9 10 Δ X (m/s) Position: 0 3 7 12 17 24 22 17 14 14 1. Graph the table above (include title, label the independent (x) and dependent variable (y), use the proper scale) 2. Identify on your scale the positive acceleration and the

asked by edu on March 5, 2014
43. ## chemistry

Compute the boiling point of this Solution: 25.5g C7H11NO7S (4-nitro-2-toluenesulfonoic acid dihydrate) in 1.00*10^2g H2O (nonionizing solute) The freezing point of H2O is lowered 1.86 Celsius per mole of solute. The boiling pint os H2O is raised 0.512

asked by Jose Reyes on November 22, 2010
44. ## chemistry

what is the pH of the buffer when 4ml of 1M HCl is added to a 100ml buffer solution made using 5ml 1M Na2HPO4 and 5ml 1M NaH2PO4? The pKa for H+ + HPO4- ==> H2PO4 is 6.82. What would happen to the pH if the 100ml buffer had been made up at the starting pH

asked by matt on August 23, 2010
45. ## AP Chem

A 1.73 g sample of a molecular compound is dissolved in 105 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51C, the normal boiling point of CCl4 is 61.2C. The boiling point constant for CCl4 is 4.95 K ·

asked by John Smith on December 12, 2012
46. ## isds

The optimal total shipping cost in a minimization transportation model is \$622, and the reduced cost from source node 1 to destination node 6 is \$6. This implies that if one were to deviate from the optimal solution by shipping one unit from node 1 to node

asked by mca on October 12, 2015
47. ## Chemistry help

Hello. Can I get someone to help me set up these problems? 1.) How many moles of N are there in 2.6 moles of NHO3? 2.) How many moles of C2H6 (g) are consumed when 4.4 mol CO2 (g) are produced? 3) How many milliliters of 0.80 M CuSO4 must be diluted to

asked by Nazr on February 25, 2007
48. ## Math generating functions

at present, there is one-hundred thousand in a trust fund. The fund earns two % interest per year, but ten% of the fund is given away each year. Also, ten-thousand is put into the trust fund per year. 1a) Obtain and solve the difference equation by

asked by Mark on November 27, 2017
49. ## Physics

A -A child rides a toboggan down a hill that descends at anangle of21.8◦ to thehorizontal. The hill is 42.6 m long. What is the horizontal component of the child’s displacement? Answer in units of m. B - What is the vertical component of the child’s

asked by Anna on October 22, 2017
50. ## Algebra

Word Problem: Jack mows the lawn in 4 hours, mary mows the lawn in 5 hours. how long will it take them if they mowed the lawn together? I have a hard time figuring out which formula to use to solve a problem in a word problem can anyone help and tell me

asked by Laura on October 18, 2008
51. ## math (geometry)

It says: Find the area of a rectangle with length 12 inscribed in a circle with radius 7.5. I know when they're talking about a radius with a figure, they're talking about the length between the center of the circle to a corner of the figure. But that

asked by Emily on March 16, 2008
52. ## Calculus

Find the values for which f(x) = x^10-10x and if 0 (less than or equal) to x (which is less than or equal to) 2. a) f(x)has a local max or local min. Indicate which ones are max and which are mins. b) f(x) has a global max or global min could you kind of

asked by joe on October 26, 2008
53. ## College Chemistry

If 69.3g of magnesium chloride were produced from a process with a known yield of 78.3%, find the mass of carbon tetrachloride in grams that was used. Equation: 2CCl4 + MgCrO4 -> 2COCl2 + CrO2Cl2 + MgCl2 I was able to solve it but I just don't understand

asked by Bach on March 31, 2010
54. ## chemistry

A volume of 12.47 mL of 0.1080 M NaOH solution was used to titrate a 0.583 g sample of unknown containing K2HPO4. What is the percent by mass of K2HPO4 in the unknown? In this problem what mass of sample in grams would be needed to deliver about 23.40 mL

asked by lovely on December 3, 2013
55. ## chemistry

In a particular redox reaction, Cr is oxidized to CrO4^2– and Cu2^+ is reduced to Cu^+ . Complete and balance the equation for this reaction in acidic solution. Cr + Cu^2+ ---> CrO4^2-+ Cu^+ i started off by doing this 2 x SO3^2- ---> SO4^2- + 2e 2 x

asked by Mike on February 13, 2012
56. ## Organic Chemistry

isopentyl alcohol is reacted with acetic acid to make isopentyl acetate through Fischer esterification. Sulfuric acid is used to assist the reaction. After the reaction, the solution is washed with sodium bicarbonate. What reactions take place during this

asked by chemstudent on July 22, 2008
57. ## final letter for my english class

I had to write a cover letter for my final project for the year, which had to include feedback and various other things I pretty much covered in my letter. Can someone proofread it and tell me if I need to improve anything in it please? Thanks SO much!!!

asked by Emily on May 26, 2008
58. ## Chemistry

Organic chemistry: an attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of 11.0 degrees. If it is known that the specific rotation of the R enantiomer is

asked by Tokey on November 4, 2010
59. ## Mathematics (Probability, Statistics, etc.)

I have a Statistics project due tomorrow on Combinatorics. Admittedly, while my math skills aren't too bad (I get 99th percentile on standardized tests and such), it has been a while since I last took a math class after a 2-year lapse in education, so my

asked by Matt on October 30, 2011
60. ## Physics

A 75.0-kg cross-country skier is climbing a 3.0o slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert

asked by Anonymous on June 10, 2014
61. ## Physics

A 75.0-kg cross-country skier is climbing a 3.0o slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert

asked by Anonymous on June 10, 2014
62. ## physics

ok i have a problem to work on in my new course, and i was wondering what i need to do to tackle it. the question is as follows: An electron is projected with an initial velocity Vo=10^7m/s into the uniform field between the parallel plates "E". the

asked by mo on September 16, 2011
63. ## Eco

jasmine works in sales but is considering quitting work for 2 years to earn an MBA. Her currrent job pays \$40,000 peryear (after tax),but she could earn \$55000 per year if she had her master of business admin. Tuition fees is \$10000 per year. Jasmine's

asked by chloe on October 5, 2007
64. ## chemistry

which of the following would be expected to have the lowest freezing temperature? a. .1 M Ca(NO3)2 b. .1 M NaC2H3O2 c. .1 M CuSO4 d. .1 M HC2H3O2 e. .1 M C2H5OH Here is what you do Mary. delta T = Kb*i*m Kb is the same for all. m is the same for all. i is

asked by mary on April 21, 2007
65. ## Chemistry

Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5860 g were dissolved in water. They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride

asked by chica on September 29, 2013
66. ## Chemistry

A 10.0 mL volvume of Ultra Bleach is diluted in a volumetric flask. A 25.0 ml sample of this solution is analyzed accordign to the procedure in this experiment. Given that 33.75 mL of 0.135 M Na2S2O3 are needed to reach the stochiometric point, answer the

asked by Ashley on January 24, 2012
67. ## CHEMSTRY

. A small amount of solid Hg2Cl2 and 25 ml of metallic mercury were added to a solution of 5.03 x 10-2 M NaCl. A platinum electrode immersed in the layer of mercury was connected to a reference half-cell whose electrode potential was 0.222V. The voltage of

asked by ABDULALEH on November 22, 2008
68. ## Physics

I don't want an answer I would just like to know what equations to use to answer the questions. It's confusing me. i. imgur. com/6CouaRj .png An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple

asked by Armin on May 20, 2014
69. ## Algebra

Suppose A is the amount borrowed, r is the interest rate (in decimal form), and m is the total number of monthly payments. Let w = (r)/(12) Then the formula to determine the monthly payment amount for a loan is given by (Aw)/1-(1)/ (1+w)^m (a) What is the

asked by Shelly on July 29, 2009
70. ## Geometry

Shelly, Susan, and Samantha are all working at an amusement park for the summer. The manager finds out that one of them left the key in the door to the security office. When he asked them who did it, they replied: Shelly: Samantha did it. Susan: Shelly did

asked by Anonymous on February 22, 2012
71. ## Evolutionary Science

I'm reading this article and I'm having difficulty understanding some of the terminology. It says the following: "We show that endometrial PRL expression is a derived feature of placental mammals and that the episode of positive selection in HoxA-11

asked by Lena on March 16, 2011
72. ## Science

having wayyy tooo much trouble with this simple assignment. Is there a lab that proves that the light reactions must occur prior to the dark reactions in photosynthesis? So far, I thought of the experiment in which one plant is placed in direct sunlight

asked by Carmen on January 3, 2008
73. ## Biology III

I'm having wayyy tooo much trouble with this simple assignment. Is there a lab that proves that the light reactions must occur prior to the dark reactions in photosynthesis? So far, I thought of the experiment in which one plant is placed in direct

asked by Carmen on January 2, 2008
74. ## chemistry

A 40-year old man, at a prominent legal firm experiences abdominal pain post lunch. He takes several trips to the restroom, but continues to experience pain and cramps. He decides to go to the doctor and admits he consumed 2 bottles of beer @ lunch. The

asked by Sara on February 5, 2012
75. ## math

solve the simultaneous equations; log x base 2-log y base 4=4, log (x-2y)base 2=5

asked by jessica on February 17, 2013
76. ## math

solve each identity algebraically 1)(1-tanx)/(1-cotx)=-tanx 2)(1+cotx)/(1+tanx)=cotx

asked by Sh on February 24, 2009
77. ## algebra

use the percent equation to answer the following. solve the percent equation for h percent equation is a/b=p/100 thanks

asked by ann on December 3, 2011
78. ## Algebra2

Combine, rewrite & solve: 4 log base 9 of 3 = x log base x of 12 + log base x of 18 = 3

asked by Anonymous on April 11, 2013
79. ## Logarithms

Solve log4 x + log4(x-2)=log4(15) I know how do the example in my book but I don't know what I'm doing wrong here. log4 x + log4(x-2)=log4(15) log4 [x + log4(x-2)]=log4(15) (x^2 + x)=4 x^2 + x-4=0

asked by Anonymous on August 25, 2008
80. ## Algebra 2

How would I solve the equation: log(base2)4 - log(base2)(x+3) = log(base2)8 ? i think i have to start by doing 4/(x+3)=8

asked by Ana on February 28, 2010
81. ## PHYSICS

Starting from rest, a 2.0 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5 10-4 J of work on the flea. -How far does the flea move while

asked by Steven on October 3, 2014
82. ## PHYSICS

A child pushes a merry-go-round with a force of 55.0 N at an angle tangent to the circle (that is, perpendicular to a radius). If the child pushes it through exactly one full circle, and the merry-go-round has a radius of 1.15 m, how much work does she do?

asked by Meg on June 9, 2012
83. ## Question (plz read)

If you publish your work on lulu will it be in stores?? I was reading this website Self Publish a Book on lulu Step by Step after I watch the video, I'm wondering since my book will be sold all over the world (that what is said in the video) will it be in

asked by Laruen on July 22, 2012
84. ## Hardwork I done already! :)

7th Grade 7th grade Grades (1st quarter to 4th quarter): English 7 - 99 Math 7 - 91 Social Studies 7R - 91 Science 7R – 80 Fine Art 7 (advance art) – 100 Strings 7 – 100 Gym 7 and 8 – A GPA: 1st Quarter – 93.50 2nd Quarter – 3rd Quarter – 4th

asked by Laruen on December 30, 2011
85. ## Chemistry

Without detailed equilibrium calculations, estimate the equilibrium concentration of SO3 when a mixture of 0.134 mol of SO2 and 0.067 mol of O2 in a 275 mL flask at 300oC combine to form SO3. 2 SO2(g) + O2(g) = 2 SO3(g) Kc = 6.3x10^9 I tried doing an ICE

asked by Kiba on February 14, 2012
86. ## physics

Okay, I have an example problem that I'm trying to solve that comes with the answer; I'm just trying to figure out what to do. A man jogs at a speed of 1.8 m/s. His dog waits 2 s and then takes off running at a speed of 4 m/s to catch the man. How far will

asked by j on January 15, 2011
87. ## physics

Construct a 5th mode standing wave on a string that has an unknown mass hanging from one end. The distance between fixed ends of the string is 0.9 meters. If the wave speed on the 1.3 meter string is 216 meters per seconds and the string has a mass of 3

asked by Rachel on April 28, 2013
88. ## Math

3. A textbook weighs 2.5 pounds. How many kilograms does the textbook weigh? Round your answer to the nearest tenth of a pound. 1kg = 2.2 lb 1.1 kg 1.8 kg 5.5 kg 4.7 kg (my answer) 5. Solve the proportion using cross products 18/20 = k/110 A. 99 B. 122 C.

asked by Easy Math problem on March 7, 2014
89. ## Math - Calculus

Im doing some practice questions and im stumped on this one. The amount of cleaning fluid in a partially filled, spherical tank is given by V = (pi)R(h^2)-(pi(h^3))/3 Where R is the radius of the rank, and h is the depth of the center of the tank. If

asked by Swk13 on December 3, 2006
90. ## Health

1. The muscular system is essential because it allows our bones to *A*. Strengthen.**** *B*. Contract. *C*. Lengthen. *D*. Move. 2. Which muscle is attached to a bone by tendons? *A*. Smooth muscle. *B*. Cardiac muscle. *C*. Skelital muscle.**** *D*.

asked by Theonewhoeatscake on March 7, 2019
91. ## math

The number of boys in a certain class exceed the number of girls by 7. If the number of boys is 5/4 of the number of girls, how many boys are there in the class? The choices of answers are: a) 21 b) 28 c) 35 d) 42 e) 63 I figured out that the answer is 35,

asked by sylvie on February 12, 2010
92. ## Management of Information Systems

Each scenario describes an individual or organization with specific IT needs. Based on the information presented in the scenario, make a recommendation for which computer system type would be the best fit for each individual or organization and why. Your

asked by Anonymous on September 12, 2008
93. ## American Government

The city council of Smallton has just chosen a new chief administrator. She will carry out the policies of the council and hire department heads. If the council is not pleased with her work, it has the ability to dismiss her at any time. Which form of city

asked by Daniel on November 2, 2017
94. ## Calculus HELP

Original Function: -cos(3x) Derivative Function: 3 sin(3x) The period for the function and its derivative is 2π/3 radians. Over one period, when is the derivative function equal to its original function? That is, when is f(x) = f '(x) over 0≤x≤2π/3?

asked by Anonymous on November 20, 2018
95. ## accouting

- Hanna Manufacturing – Due Hanna Manufacturing manufactures components for the farming industry and is considering replacing its existing equipment with new and more high technology machinery, despite the fact that its existing eq uipment is only a few

asked by awad on March 21, 2013
96. ## Pre Cal

sin theta - 2sin^2 theta = 0 I'm using the up carrot sign to signal "to the power of..." Let sin theta = x x - 2 x^2 = 0 x (1 - 2x) = 0 Both x=0 and x = 1/2 are solutions. theta = 0 degrees, 30 degrees, 150 degrees and 180 degrees. Thank you so much!!! im

asked by Marie on February 25, 2007
97. ## Maths

A boy cycled from his home to a friend's house 24km away at an average speed of 16km/h. Finding his friend absent, he returned home immediatly at an average speed of 12km/h. Find the average speed I know how to find the average speed, just that I need to

asked by 10M1 on November 3, 2011
98. ## algebra

hi. I'm expected to solve (27ab^3)^1/3 times the sq. root of (there is a three in the nook of the square root) 5a^4b. I follow it until it reduces to the square root of (still with the three in the nook), 3^3a^3b^3 times 5 a^2 b. Where does the three on

asked by Anna on December 14, 2008
99. ## Math

Hello, Having trouble with this one... Solve the inequality: (2x-3)(4x)+x^2=>(3x+4)^2 I did 2x-3*4x 9x^2-12x on the left side on the right side: 9x^2+24x+16 I substracted everything on the right side over to the left and made it => zero

asked by muffy on September 12, 2009
100. ## math

ethan wrote a new song,The first time he wrote it,it had two verses,the second time 4 verses,the last time 6 verses.How many verses will he sing if he sings the song 8 times?look for a pattern and solve the problem

asked by mary on October 28, 2009