# 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

92,096 questions, page 508
1. ## Math (ugh)

Solve the problem. Make sure your answer is in simplest form and improper fractions are expressed as mixed numbers. 3 3/4 x 2 4/5 = ?

asked by Anonymous on April 24, 2017
2. ## Math Help

I really need help on this. I tried doing it on my own, but, I got stuck. Thanks! (a) List any approximate x-intercepts values. (b) Set y = 0 and solve the resulting equation; y=x^3-4x^2-25x+100.

asked by Lori on October 10, 2014
3. ## Calculus

Solve the quadratic equation by factoring. (Enter your answers as a comma-separated list.) 5x2 − 23x = −12

asked by jay on January 24, 2017
4. ## math

The two figures are similar, solve a proportion to find the length n. Express the result as either a whole number or use decimal digits only if necessary. * * * 15 cm 9 cm * * * * * * * * * * * * * * 12 cm * * n * * * * * * * * * * * * * *

asked by Cheril on April 12, 2012
5. ## Math

could someone please help me solve these two math problems? Which of the following numbers are integers? 2/13,570,0.096,-670,33.3? write in the lowest terms 2 1/4+4 1/7?

asked by kiki83 on September 23, 2010
6. ## calculus

When you are decomposing fractions into constants EX: 1/(x-1)(x-2)^2 = A/(x-1) + B/(x-2) + C/(x-2)^2 Why do you have to repeat (x-2), instead of just putting B/(x-2)^2? I know how to solve these types of problems, but I don't understand it conceptually.

asked by Anonymous on June 6, 2011
7. ## math

The two figures are similar, solve a proportion to find the length n. Express the result as either a whole number or use decimal digits only if necessary. * * * 15 cm 9 cm * * * * * * * * * * * * * * 12 cm * * n * * * * * * * * * * * * * *

asked by Cheril on April 12, 2012
8. ## Math

Use the compound interest formulas A = P(1 + r/n)nt and A = Pe^rt to solve. Find the accumulated value of an investment of \$3000 at 9% compounded continuously for 3 years.

asked by Tony on July 15, 2012
9. ## math

please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm.

asked by kelvin on August 16, 2018
10. ## algebra B

Using the formula, w = cr^-2, solve for r. An object weighs 100lbs. What value of C will result in r = 3963? I have another question similar, but if someone could guide me in this one, I can figure out the other one. Thanks,

asked by Nancy on February 11, 2011
11. ## Science

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

asked by Drift on November 5, 2012
12. ## Chemistry

i am not understanding how to solve this how many moles of gas are present in a sample that is at 756 mm Hg pressure, has a volume of 5.3 L, and a temperature of 38 degrees C?

asked by Angel on April 3, 2013
13. ## Physics

A rocket accelerates from rest at 17 m/s2 for 11 s. How far will it cover during this time? Answer in units of m. How do I solve this? do I multiply 17m/s2 by 11 seconds??

Will someone please help me withthis question I couldn't solve it. What is the length of the segment whose endpoints are A(2, 3) and B(10, 7)? a)2 Sqrroot29 b)2 Sqrroot41 c)4 Sqrroot2 d)2 Sqrroot5

asked by Liz on June 19, 2012
15. ## Managerial Economics

Managerial Economics uses_____to help solve problems. a. mathematical programming b. Statistics c. decision sciences d. microeconomics e. all of the above

asked by John on September 20, 2007
16. ## trigonometry

Use fundamental Identities to find the exact value of the expression. Do not use a calculator. Sin² 65° + cos² 65°=??.. How would I attempt to solve this problem??

asked by Amber on March 9, 2009
17. ## Algebra1

Here's the problem. I have to write an equationa and solve. The greater of two consecutive integers is 15 more than twice the smaller. Find the intergers. Thank you guys so much! =)

asked by Nicole on November 1, 2009
18. ## math algebra

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x=

asked by student on April 16, 2013
19. ## Algebra

I have a math CRCT test today and I needed some help on a last minute review problem. Can someone please explain how to solve this? 1. 12x-3+6x-2=31 -MC

asked by mysterychicken on April 22, 2009
20. ## Science

Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life.

asked by Anonymous on September 1, 2015
21. ## Psychology

I watched an episode of NOVA this week called "Secrets of The Wild Child" and I have a question, even though I'm watching the show on YouTube. 1) In what specific ways did Genie's early deprivation effect her development and socialization?

asked by Alex L. on May 7, 2011
22. ## fundamentals

Calculate the total constant force needed to accelerate a vehicle with mass 1400kg and tractive resistance of 320N from 19km/h to 95km/h over a distance of 0.8km on a horizontal plane.show working?

asked by David on June 5, 2013
23. ## RELA

In which of the following sentences does the subject agree with the verb? A. The musicians brings their own instruments to the show. B. Mr. Chang and his wife visits the aquarium often.. C. Either Lyn or Ben usually comes to my track meets. D. The trees on

asked by Ms.Sue on November 27, 2018
24. ## math

Find the volume of the solid generated by revolving the curves y=x^2+1 & y=x+3. after finding the intersection, x= 2 & x=-1 can someone show me how to integrate this funct. with simplest steps(i mean do not use substitution formula). if im x miataken the

asked by ifi on December 21, 2012
25. ## statistics

at a bank, account balances are nomrally distribued with a mean of \$637.52 and standard deviation of \$623.16. What is the probability that a simple randon same of 400 accounts has mean that exceeds \$1650.00? show me steps and calculations i urgently need

asked by son on January 23, 2008
26. ## Chemistry

I don't get how to fill in the blanks Show the products for cellular respiration by completing the following chemical reaction equation. Give the correct formula for oxygen as well Glucose+_________ ---> ________+______+___________

asked by Steve on May 16, 2007
27. ## Physics

Standing at the edge of a cliff 240 m tall. You throw a ball into the air one directly upward at 5 m/a and another downward at -5 m/s. Use conservation energy to show that they will have the same speed at the bottom. I know I have to do it twice.. And it

asked by Michelle on April 11, 2014
28. ## History

The United States Supreme Court decision that requires prosecutors to turn over any evidence that tends to show the innocence of the defendant is: A. Batson v. Kentucky B. Gideon v. Wainwright C. Santobello v. New York D. Brady v. Maryland

asked by Marshall on July 23, 2015
29. ## Math

Find the sum of all n exterior angles of a n-sided convex polygon, where n is any positive integer larger than 3. Show all the working details and reasons. I already know that the total is 360 degrees, but how would I use mathematical proof to figure it

asked by Jerry on September 3, 2009
30. ## English

In which one of the following sentences does the verb agree with the subject? A. The musicians brings their own instruments to the show. B. Mr. Chang and his wife visits the aquarium often. C. Either Lyn or Ben usually comes to my track meets. D. The trees

asked by Ace on November 8, 2018
31. ## calculus-derivatives

Hello, please help me, I'm studying for a test. :) I won't say the question because I'd like to figure it out myself or try first, but I'm looking for a simpler way to go about this. I have to find the derivative of h(x)= (x)(x-1)^1/3 I got: h'(x)=

asked by mary on March 15, 2012
32. ## Science

What if you had paper clips, rubber bands, wood chips, straight pins, strips of aluminum foil, and glass beads? Using a property you've learned, classify these objects . Show your results in a table.

asked by Carlito on January 19, 2010
33. ## Geography

What two methods are used to represent features on the earth? On a physical map, shades of black to light gray or various colors can show elevations. On three-dimensional maps and globes, the mountains are raised slightly above the oceans.

asked by May on February 18, 2007
34. ## Criminal Justice/Judicial System

The __________ is/are the federal trial court(s) and is/are the "entry point" into the federal judicial system. A. U.S. Supreme Court B. circuit courts C. district courts D. court of appeals I think it's C., but not sure.

asked by Pat on February 2, 2015

find the equivalent spring constant for a system of two spring of constant k 1 and k2 connected in series .use your result to explain to explain what happens when a sprin g of constant k is cut into two equal halves

asked by deepak on April 27, 2011
36. ## Chemistry

There are two open beakers placed in a sealed box at constant temperature. Beaker 1 has 25 ml of .1 M NaCl in water. Beaker 2 has 45 ml of .05 M NaCl in water. What happens as the system goes towards equilibrium and what is the final contents in each

asked by Anonymous on February 14, 2014
37. ## chemistry

The total phosphate concentration in a blood sample is determined by spectrophotometry to be 3.0×10−3 M. The pH of the blood sample is 7.45, What are the concentrations of H2PO4− and HPO42- in the blood? Pka for the phosphate system is 7.198

asked by India on December 9, 2014
38. ## chemistry

95.0 mL of H_2O is initially at room temperature (22 degree C). A chilled steel rod at 2 degree C is placed in the water. If the final temperature of the system is 21.3 degree C, what is the mass of the steel bar?

asked by Mely on October 18, 2010
39. ## american history

1. Which of the following was not part of Britain's new imperial system after 1763? The Sugar Act The Molasses Act The Stamp Act The Currency Act The Quartering Act Please check the date for the Molasses Act.

asked by Alisa on October 15, 2006

A boy on a swing is pulled to a position 2.34 m off the ground and released. At the fastest and lowest point of the swing the boy is 0.50 m off the ground and travelling 3 m/s. The percent efficiency of this swing system is?

asked by Rin on July 27, 2017
41. ## English

Can you please check if the following sentences summarising part of the film Frankenstein are possible? 1) Though the town is affected by cholera Victor decides not to abandon his work. 2) His work comes even before his beloved Elizabeth, who tries to

asked by Franco on November 22, 2010
42. ## Geometry

Writing indirect proofs. Can someone please check for me. I am not sure If this is correct.Thanks much Given: triangle ABC angle B=120 degree Proof: Triangle A does not equal 60 degree Plan: Using an indirect proof, using the paragraph method My answer.

asked by DANIELLE on June 4, 2007
43. ## ashworth college

In completing the work sheet, what is the reason for adding the net income for the year to the balance sheet credit column total It helps to put a subject in the subject box. In completing the work sheet, what is the reason for adding the net income for

asked by cook on February 27, 2007
44. ## Math

Show me how to solve problems like this. 1.) 7 + (-9) + (-5) + 6 2.) [(-3)(-4)(-5)]/ (-2)(-3)] Try reading the following sites' pages very carefully. Then make an attempt at doing the problem, and we'll see if you got it right:

asked by Walter on June 6, 2007
45. ## History-help

I need help on this! Please help me! Thank you :) you're a huge blessing! What is driving the economic changes in china and why? What economic system do you believe china is? Why? What are the goals and dreams of the Chinese compared Americans? What are

asked by Anonymous on March 4, 2014
46. ## Physics

A 0.52kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15m . a. Determine the velocity when it passes the equilibrium point. b.Determine the velocity when it is 0.12m from equilibrium c.Determine the total energy of the

asked by Juanita on October 27, 2013
47. ## math

length of a piece of wood must measure between 15 and 17 centimeters and the width must measure between 9 and 11 centimeters. write a system of linear inequalities to represent the possible dimensions of the wood,in inches,given that 1 inch equals 2.54

asked by Munna on April 21, 2016
48. ## physics

a) 2.0 kg of molten copper at its melting point of 1083 ºC (the copper is 100% liquid) is poured into a mold in a cooling water bath at 20 ºC. What mass of water is needed to bring the solidified copper and water to an equilibrium temperature of 30 ºC,

asked by Eric on December 12, 2006
49. ## Physics

A natural gas power plant burns natural gas to produce electricity. In one second it produces 500 MJ of electrical potential energy. The power plant consumes chemical energy in order to produce electrical potential energy. --In one second does it consume

asked by Daniel on December 9, 2015
50. ## Hospitality and Tourism

Is this ethical behavior? Is it ethical to take office supplies from work for home use? No Is it ethical to use company time to solicit signatures for a petition nconcerning a current social issue? No If there are sslight defects in a product you are

asked by Anonymous on September 3, 2016
51. ## linear algebra

Bob and Doug play a lot of Ping-Pong, but Doug is a much better player, and wins 80% of their games. To make up for this, if Doug wins a game he will spot Bob five points in their next game. If Doug wins again he will spot Bob ten points the next game, and

asked by jolia on December 7, 2014
52. ## Physics....Orbiting Satellite

A orbiting satellite stays over a certain spot on the equator of (rotating) Venus. What is the altitude of the orbit (called a "synchronous orbit")? I found the radius and mass of Venus on the google, but I don't know what I should plug in the "T" if I use

asked by Jessy on January 15, 2007
53. ## physics

A vertical load W is applied to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A and E in terms of the magnitude of the applied load, W. Use MATLAB to find the

asked by SD TRUSS PROBLEM WITH THE METHOD OF JOINTS on July 1, 2014
54. ## English Improving writing

please check this for me he is my rough draft (again) Please check this for me thank you very much :) There are on- going problems that need to be addressed at the DMD company. First there is uneven allocation of tasks. While Bonnie and Molly are working

asked by Kaleigh-Anne on June 20, 2008
55. ## physics

A 16 lb block rests on a horizontal frictionless surface. A cord attached to the block, running horizontally, passes over a pulley whose diameter is 1 in, to a hanging block weighing 16 lb. The system is released from rest, and the blocks are observed to

asked by Science on May 6, 2013
56. ## Physics

The melting point of aluminum is 660°C, its latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900 J/kg • K. If 300 kJ of heat are added to 442 g of aluminum at 100°C, what is the final state of the system? That is, how much is liquid,

asked by MB on March 10, 2016
57. ## Physics

A 500 g block on a frictionless surface is attached to a rather limp spring of constant k = 8.7 N/m. A second block rests on the first, and the whole system executes simple harmonic motion with a period of 3.1 s. When the amplitude of the motion is

asked by Mike on November 11, 2012
58. ## Social Studies

In Athens the system of government became a direct democracy, in which the people participated directly in government. In the Roman republic, citizens participated in government A.in the identical way B.through meetings held in the marketplace C.by taking

asked by lovelife3 on April 14, 2016
59. ## physics

A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature

asked by jen on September 23, 2010
60. ## MAth algebra 1

Steve is driving to a ski resort. At first, he drove at a rate of 65 mph. Then a snow storm started and he had to slow down to 40 mph. In total. it took him 6 hours to drive 310 miles. Which system of equations represents this situation? A. 6x + y= 1 x +

asked by dbzaltheway on February 8, 2016
61. ## accounting

Activity-based costing is: A) the process of identifying all activities and relating these activities to the events, circumstances, or conditions that create or drive the need for the activities and the resources consumed. B) a method of determining the

asked by Lee on August 12, 2008
62. ## accounting

Activity-based costing is: A)the process of identifying all activities and relating these activities to the events, circumstances, or conditions that create or drive the need for the activities and the resources consumed. B)a method of determining the most

asked by Lee on August 12, 2008
63. ## Chemistry

Can someone help me with this problem.... i have an exam coming tomorrow and im doing practice problems but i dont know how to do this Calculate the specific heat of a metal if 2.36102 grams of it at 99.5 degrees celsius is added to 125.0 mL of water at

asked by Katherine on May 20, 2019
64. ## history

Which most accurately defines heretic? A a person who flees a region because of ethnic persecution B a person who holds a belief not accepted by other members of his or her faith C a military traitor to one’s nation or ethnic group D a leader of a new

asked by laurie k on November 6, 2018
65. ## physics

A car begins at rest at t0 = 0. The car starts moving and finally covers a distance d = 617 m in a time tf = 105 s. In a coordinate system with north being the positive x-direction, the car's motion is in the southern direction. What was the car's average

asked by joe new on September 12, 2014
66. ## physics

A painter of mass 90.0 kg stands on a platform of mass 50.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 600.0 N. Assuming a coordinate system where +y is up, calculate the y-component of the acceleration

asked by shyne on September 28, 2012
67. ## Physics

A spring is attached to the top of a table. The spring has a spring constant of 500.0 N/m. The spring is initially compressed by 1.50 m by a baseball (0.145 kg). How much energy is present in the system from the compression? After release, what is the

68. ## physics

Three particles, each of mass 1.0 kg, are fastened to each other and to a rotation axis by three massless strings, each 0.120 m long, as shown in the Figure. The combination rotates around the rotation axis with an angular velocity of 25.0 rad/s in such a

asked by Kelly on April 17, 2018
69. ## Physics

A painter of mass 80.0 kg stands on a platform of mass 75.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 400.0 N. Assuming a coordinate system where +y is up, calculate the y-component of the acceleration

asked by Ashley on September 21, 2016
70. ## Physic sucks 1401

An Atwood's machine is built from m1=1kg and m2=2kg. The massless string is passed over a frictionless massless pulley. When the system is released from rest, what is the tension in the string? The answer is 68, this is for my finals review And my

asked by Amanda on April 30, 2017
71. ## Chemistry!

Consider the equilibrium system: N204 (g) = 2 NO2 (g) for which the Kp = 0.1134 at 25 C and deltaH rx is 58.03 kJ/mol. Assume that 1 mole of N2O4 and 2 moles of NO2 are introduced into a 5 L contains. What will be the equilibrium value of [N204]? Options

asked by Vee on February 12, 2012
72. ## Science

A Big Mac contains a bun, hambuger, pickles, lettuce, tomatos, and a special sauce (mayo) which part if a big mac is chemically broken down in each digestive system organ? Mouth- Stomach- Small Intestines- Large Intestines- HELP EMILEIGH =D

asked by Emileigh on December 14, 2010
73. ## Chemistry

HELP PLEASE. I have no idea how to set this up. I tried using the q=mc(change in temp) equation but its not working out. A 59.8 g block of an unknown metal at 87.5 degrees Celsius was dropped into an insulated vesssel containing approximately 33 g of ice

asked by Taylor on September 30, 2014
74. ## Physics.

A 500 g block lies on a horizontal tabletop. The coefficient of kinetic friction between the block and the surface is 0.25. The block is connected by a massless string to the second block with a mass of 300 g. The string passes over a light frictionless

asked by Lissa. on May 31, 2014
75. ## physics

A 44.8- child is standing on the outer edge of a merry-go-round that has moment of inertia 981 and radius 2.40 . The entire system is initially rotating at 0.180 . Find the angular velocity if the child moves to a final position 1.10 from the center of the

asked by Anonymous on September 30, 2012
76. ## chemistry

I am having a hard time with this problem. I was wondering where I went wrong. The problem says The equilibrium constant, Kc, for the reaction of H2 and N2 is 1.7×10^2 at 225 ∘C. 3H2(g)+N2(g)←→2NH3(g) If the system at equilibrium contains 0.16M H2

asked by chelsea on November 13, 2013
77. ## Writing Sentences and Paragraphs

Ok I worked real hard on this :) I hope I nailed it this time. My other question is : Is it one space after commas? Two spaces after a period ? and one space after an exclamation mark. Ok fingers crossed ! Anna, I am so happy you’ve moved back to

asked by Shawna on January 12, 2012
78. ## Chemistry

When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1

asked by Steve on July 3, 2014
79. ## Chemistry

When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1

asked by Steve on July 3, 2014
80. ## Chemistry - Buffers

A buffer is formed by adding 500mL of .20 M HC2H3O2 to 500 mL of .10 M NaC2H3O2. What would be the maximum amount of HCl that could be added to this solution without exceeding the capacity of the buffer? A. .01 mol B. .05 mol C. .10 mol D. .15 mol E. .20

asked by alexa on April 21, 2007
81. ## opinion

How can American companies make the workplace environment safe and efficient without treating employees like suspected criminals? It depends on what type of companies and what type of jobs you are considering. I don't know why making an environment "safe

asked by anonymous on August 21, 2006
82. ## accounting

Company reports net income of \$ 530,000 for the year ended December 31, 2009. It also reports \$ 95,400 depreciation expense and a \$ 4,000 gain on the sale of machinery. Its comparative balance sheets reveal a \$ 42,400 increase in accounts receivable,

asked by Renee on October 24, 2011
83. ## english

In my Communications class we are discussing how eye contact is important when giving an oral presentation. My teacher asked the question which countries and cultures don't use eye contact? What assumptions and rules do they have concerning lack of eye

asked by jessica on October 8, 2006
84. ## Math

Hello, I have this question to which it's solution I'm not quite sure of. The question is based on a diagram, and I can't really present it but I'll explain it to my very best, thank you very much for trying to understand my bad presentation of the

asked by Torre on May 9, 2012
85. ## Psychology

1)The Peabody Picture Vocabulary Test-Revised is used to Select one: a. determine a child’s reading level b. determine a deaf child’s understanding of words c. identify people with communication difficulties d. identify children who should skip a grade

asked by Anonymous on July 15, 2015
86. ## math

Which strategies can be used to solve this problem? The candle factory made 1,200 candles per month in June and July and 1,345 candles per month in August and September. What is the total number of candles they made in four months? Choose all answers that

asked by April lanneau on March 8, 2019
87. ## Math

Euromart Tile Company borrowed \$40,000 on April 6 for 66 days. The rate was 14% using the ordinary interest rate method. On day 25 of the loan, Euromart made a partial payment of \$15,000, and on day 45 of the loan, Euromart made a second partial payment of

asked by Anonymous on June 19, 2013

Euromart Tile Company borrowed \$40,000 on April 6 for 66 days. The rate was 14% using the ordinary interest rate method. On day 25 of the loan, Euromart made a partial payment of \$15,000, and on day 45 of the loan, Euromart made a second partial payment of

asked by lost on June 21, 2013
89. ## math

Euromart Tile Company borrowed \$40,000 on April 6 for 66 days. The rate was 14% using the ordinary interest rate method. On day 25 of the loan, Euromart made a partial payment of \$15,000, and on day 45 of the loan, Euromart made a second partial payment of

90. ## Chemistry

Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature because of the following endothermic reaction. NH4NO3(s) + H2O(l) =

asked by Don on February 1, 2011
91. ## WORLD GEOGRAPHY

9. Australian vegetation is dominated by various species of acacia and A. cacti. B. marsupials. C. ores. D. eucalyptus. 10. According to the World Health Organization (WHO), AIDS is listed as the _______ main cause of global deaths. A. eighth B. fourth C.

asked by SARAH on September 7, 2014
92. ## science

How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries? The addition of sugar to the outside of the strawberry makes a solution that is more concentration outside the strawberry than inside the fruit. Water moves

asked by erin on November 29, 2006
93. ## English

1. The best way to confirm the accuracy of a source is to check it against another source. True****** False 2. An expository essay is research based and completely objective. True False****** 3. Developing research questions is done during the drafting

asked by girly girl on April 30, 2018
94. ## Englisg

1) Using a single formatting _____ helps to make reading researched information easier;it lets the reader know what to expect. A. Citation B. Text C. Style D. Website My answer was B I got it wrong 2) when creating a writing plan,which of the following

A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 254 km and a direction 30.0o north of east. The displacement vector for the second segment has a magnitude of 178 km and a direction

asked by Hannah on May 27, 2012
96. ## English

F. Scott Fitzgerald dropped out of college to ..... begin writing. get married. join the army. work for his father.

asked by Sara on February 5, 2012
97. ## Physics

What is the minimum work in joules needed to push a 1460 kg car 14.0 m up a 12.5 degree incline? (Ignore friction.)

asked by Lauren on July 2, 2012
98. ## Math

A rectangle's width is x and its length is 2x-1. Its area is 21. Find its dimensions. my work so far: 21 = x(2x +1) 21 = 2x^2 + x I was wondering how I would continue to solces this problem.

asked by Caitlin on December 18, 2016
99. ## Mathematics

If a 75 kg person pedals a Monarch leg ergometer at 50 rpm, how much resistance is needed to work at a level of 11 METs?

asked by Natasha on October 6, 2013
100. ## physics

a car that's 1000 kg is stopped and the brakes exert a force of 3000 N over a distance of 891 meter, how much work is done?

asked by Anonymous on March 12, 2014