Questions Asked on
December 7, 2011

  1. math

    One day is 86,400 seconds. Express this number in scientific notation and estimate how far the sun's light travels i a day.

    asked by Laura
  2. Physics

    In starting an exercise, a 1.60-m tall person lifts a 2.10 kg book from the the ground so it is 2.20m above the ground. What is the potential energy of the book relative to (a) the ground,and(b) the top of the persons head? (c) What is the work done by the

    asked by Amanda and Leah
  3. Chemistry

    Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine the composition in mole fraction of

    asked by MInx
  4. physics

    A dockworker loading crates on a ship finds that a 20 kg crate, initially at rest on a horizontal surface, requires a 73 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving

    asked by ann
  5. chemistry! URGENT

    A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymestrone in enough water to give a total volume of 500.0 ml. A 100.0 micro liter aliquot

    asked by Lindsay
  6. math

    Mr.Shea saved $2,500 in April. His monthly salary is Twice the amount he saved in April. In May, he saved a certain amount of money.He spent $4,200 more than the amount he saved. How much did he save in May.

    asked by heidi
  7. math

    Find the point on the graph of the function closest to the given point. Function f(x) = xsquared Point (2, 1/2)

    asked by Son
  8. Math

    find the Derivative of:: 1\R = 1\R1 + 1\R2

    asked by NONO
  9. math

    A painter needs to paint a circular floor that is 24 yards in diameter. A gallon of paint cover 59 square yards. How many gallons of paint is needed to cover the floor?

    asked by Freddy
  10. geometry

    A regular hexagon is composed of 12 congruent 30-60-90 triangles. If the length of the hypotenuse of one of those triangles is 18 square root 3, find the perimeter of the hexagon.

    asked by damon
  11. Chemistry

    The density of an elemental gas is 1.7824 g/L at STP. What is the molar mass of the element?

    asked by Mary
  12. geometry

    WHAT IS THE OPPOSITE OF 58 DEGREES

    asked by Anonymous
  13. geometry

    a ladder leaning against a wall makes a 60 degree angle with the ground. the based of the ladder is 4m from the building. how high above the ground is the top of the ladder

    asked by anonymous
  14. Math

    A photograph measuring 8 inches by 6 inches is surrounded by a mat. The mat has the same width on all sides of the photograph. The photograph and mat are put into a glass photo frame which just covers the outside of the mat. If the area of the glass

    asked by -Untamed-
  15. FINANCE

    You deposit $2,000 in an account that pays 8% interest compounded semiannually. After 4 years, the interest rate is increased to 8.28% compounded quarterly. What will be the value of the account after 4 more years? (Do not round until the final answer.

    asked by lily
  16. calculus

    Verify the identity: arctanx + arctan(1/x)=∏/2 using calculus theory. (Hint: Differentiate the left hand side of the identity)

    asked by NYSNC
  17. math

    joan can mow a 3-acre field in 4 hours. how ling will it take her to mow a 2-acre field?

    asked by Anonymous
  18. chemistry

    When zinc metal is reacted with hydrochloric acid, zinc chloride and hydrogen gas are produced. If 16.4 ml of 2.14 M HCl are used: a) how many grams of zinc metal are needed to completely use up the acid? b) What will be the molarity of the aqueous

    asked by Lindsay
  19. Math

    A set of five different positive integers has a mean of 19 and a median of 21. What is the greatest value of the greatest integer in the set?

    asked by Savanna Rush
  20. Health care

    patients often equate the quality of the service with the quality of health care. How can you change this perception using surveys and research?

    asked by pj
  21. physics

    Rhonda Vous, the 445N human cannonball, is shot from her cannon, leaving it at 18.0 m/s. How much work did the cannon do on her?

    asked by beth
  22. Statics

    A log of diameter D is available to be used as a beam carrying a uniformly distributed load of 400#/ft over a length of 32 feet. Determine the required diameter D necessary if Fb=1,200psi and Fv=100psi.

    asked by Jon
  23. Physics

    What type of reaction is CS2(g)+O2(g)= CO2(g)+S2O4(aq)+HEAT? A) Synthesis B) Decomposition C) Single Replacement D) Double Replacement E) Combustion F) Redox Reaction Thank You ^_^/ I really appreciate it!

    asked by Claire
  24. math

    two figures are similar. the ratio of the corresponding dimensions 3:4. the perimeter of the larger figure is 60 units.what will be the perimiter of the smaller figure

    asked by tdog
  25. chemistry

    a sample of 0.002 mole of HCL is dissolved in water to make a 2000mL solution. What is the molarity?

    asked by kate
  26. geometry

    Find the value of ED, if AE = 6 mm, EB = 8 mm, and CE = 12 mm.

    asked by Anonymous
  27. physics

    Janet jumps off a high diving platform with a horizontal velocity of 2.89m/s and lands in the water 1.5s later. How high is the platform? The acceleration of gravity is 9.8m/s2 Answer in units of m How far from the base of the platform does she land?

    asked by ihatephysics
  28. chemistry

    Exactly 1.0 L of hydrogen gas (H2) is collected over water at 292 K under a total pressure of 152 torr. If the vapour pressure of water is 16.5 torr at this temperature, what is the mole fraction of hydrogen in the gas sample? Volume of CO2 = L Mole

    asked by nath
  29. math

    could you please solve and show steps for: 24-8/4*2+4(3)

    asked by Julie
  30. Language Arts

    1. Peanuts (are, is) valuable for many reasons. 2. Inventors (are, is) hard workers. 3. Cars (was, were) a good invention. 4. Sweet potatoes (was, were) easy to grow. 5. Peanuts (are, is) good for people. 6. Different crops (was, were) better. 1.are 2.are

    asked by Hayden
  31. Trig

    1. Establish the identity: sin(theta+3pi/2)=-cos(theta) 2. Find the exact value of 2(theta) if sin(theta)=5/13 3. Show that: csc2(theta)-cot2(theta)=tan(theta) 4. Find the exact value of tan(cos^-1(square root of 3/2) 5. Approximate the value rounded to

    asked by Brittany
  32. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

    asked by Anonymous
  33. Alg2

    he annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in 1996

    asked by Rock
  34. trig

    a right triangle contains a 25 angle. if me leg is of length 5 inches what is the length of the hypotenuse

    asked by vanessa aquino
  35. English

    Hello. I again need your grammar help and will be very grateful for it. Please tell me if the sentences are OK: "This is a very difficult situation, 1)the same as in Greece. 2)the same as it is in Greece. 3)the same as that in Greece. 4)the same as the one

    asked by Ilma
  36. Calculus

    How do you find the indefinite integral of (x^2-29x+5)/(x-4)^2(x^2+3)?

    asked by Joe Schmo
  37. trig

    Cos 3 alpha = - 0.1 solutions in degree

    asked by sherman
  38. integral Calculus

    ʃsin y dy/ √1 + cosy please help..thanks.. that's integration of sin y dy divided by (over) square root of 1 + cosy.

    asked by WAN
  39. physics

    if a 40.0-g stone is whirled horizontally on the end of a 0.60-mstring at a speed of 22m/s what is the tension in the string?

    asked by elina
  40. physics

    1. A basketball player passes the ball to his teammate at an angle of 40degrees above the horizontal. The ball is released 1.5m above the floor at a speed of 5m/s. Find: a) the maximum height reached by the ball from the floor b) the horizontal required to

    asked by bella
  41. science

    Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.

    asked by syed
  42. Chemistry

    A rock contains 200. µmol 238U (t1/2 = 4.5 109 yr) and 116 µmol 206Pb. Assuming that all the 206Pb comes from decay of the 238U, estimate the rock's age. Please explain step by step.

    asked by Amber
  43. trig

    tan theta= -4/3 and sec theta

    asked by Lana
  44. calculus 2

    what is the polar area between r=5sinx and r=5cosx

    asked by Steven
  45. Question

    Do I have to get a degree to go to Yale Art and Writing School???? What do I have to do to make it to Yale for art and writing???????????

    asked by Laruen
  46. English

    I am seeking for some help in English (grammar and punctuation. Thanks!!! Please review the folloing: As you know, in the absence of timely copies of all bills and payments and medical records supporting the reasonableness and necessity of the services and

    asked by Yelena
  47. math help please

    if you divide this number by 2 you will get 3 multiplied by 6. Subtract 3 groups of 3 and you will get 3 multiplied by 9. I am so confused trying to help my 8 year old figure this out i have come up with 9 then 36 then 0

    asked by daniel's mom
  48. Chemistry

    The half life for a first order reaction is know to be 4.5 h. How long will it take for 85% to be decomposed, in h?

    asked by Paige
  49. Physics

    I understand there is a relationship between pressure & temperature in a sealed rigid container. An open container is placed in a freezer at -15 degrees C then the door is opened and the cap replaced with the freezer at 1000mb what will the pressure be

    asked by Mike
  50. calc

    R(t)=85 t-2 t**2; t=4

    asked by lc
  51. Chemistry

    A rock contains 200. µmol 238U (t1/2 = 4.5 109 yr) and 116 µmol 206Pb. Assuming that all the 206Pb comes from decay of the 238U, estimate the rock's age. Please explain step by step.

    asked by Martin
  52. Geometry

    a parallelogram has the vertices (0,3), (3,0), (o,-3), and (-3,0). determine what type of parallelogram and find the perimeter and area

    asked by stephen
  53. statistics

    25% of the students in an English class of 100 are international students. Find mean, and standard deviation of this binomial distribution

    asked by brit
  54. chem

    how to balance the following redox 1 ClO- +I- = Cl- +I2

    asked by anonymouse
  55. math

    find the distance between points P(7,4) and Q(1,2)to the nearest tenth

    asked by ariel
  56. Math

    The shortest side of a right angled triangle is 7cm less than the second shortest side. The sum of the squares of these two sides is equal to 289cm^2. The perimeter of the triangle in cm is? I don't get how to do this, I think Im meant to use a quadratic

    asked by -Untamed-
  57. trig

    CosA*Cos17=1 then determine A

    asked by kunal
  58. physics

    An 77 person stands on a uniform ladder 4.0 long, that weighs 100 , as shown in the figure . The floor is rough; hence, it exerts both a normal force, , and a frictional force, , on the ladder. The wall, on the other hand, is frictionless; it exerts only a

    asked by bob
  59. calc

    Annual sales of bottled water in the country in the period 1993-2003 could be approximated by the function below, where t is time in years since 1990. Were sales of bottled water accelerating or decelerating in 2000? How fast? R(t) = 10 t**2 + 100 t + 2400

    asked by lc
  60. Science 7R (another qs.)

    Give an exmaple of an organ system in an animal and name the parts that make up the organ system? need help!!! plz thank u ps: just need 2-3 sentences to answer this qs.

    asked by Laruen
  61. Calculus 1

    Francis starts walking north at 4 ft/s from an intersection I. At the same time Aram starts walking south at a rate of 5 ft/s from a intersection 1500 ft due east of I. At what rate are they moving apart 15 minutes later? (Rounding to 1 decimal place is

    asked by Kristine
  62. Algebra

    Suppose a student wants to be a millionaire in 40 years. If she has an account that pays 8% interest compounded monthly, how much must she deposit each month in order to achieve her goal of having $1,000,000? What is the present value of this annuity?

    asked by Anonymous
  63. Social Studies 7R (another qs.)

    Why did the pilgrims come to america???????/ plz help

    asked by Laruen
  64. Writing

    Is there any writing compitions for middle schoolers???

    asked by Laruen
  65. Math

    You wish to purchase a house for $200,000 with 20% down. You will have it financed over 30 years at a rate of 8%. In addition, your yearly real estate tax is $4,800 while your monthly insurance payment on the home will be $30. What is your monthly mortgage

    asked by Anonymous
  66. Physics

    14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?

    asked by Sarah
  67. socials

    describe roles of women and men in 1950's, give reasons why these men women accept these roles. women become actresses men join sports, hockey their favorite. Women also join sports like figure skating, swimming. they accept these roles because they want

    asked by Mohammad
  68. Precalc

    Find (-1+i)^1/3 list steps

    asked by 95
  69. Fine Art 7

    Is there any art websites for middle schoolers to do some cool, creative, and pretty art work.

    asked by Laruen
  70. Fine Art 7 (another one)

    is there any art compitions for middle schoolers ???

    asked by Laruen
  71. Math

    The quadratic function f(x) = x^2 is transformed to g(x) = -2/3(x+3)^2 + 6 The point (6,36) on the graph of f is transformed to which point on the graph of g? Could someone please show me how to solve this:\

    asked by -Untamed-
  72. 8th grade math

    A fish tank weighs 80 pounds when 40% full of water, and it weighs 140 pounds when completely full. How many pounds does the tank weigh when empty?

    asked by Anonymous
  73. physics

    how much work can a 500 W electric mixer do in 2.50 min?

    asked by leslie
  74. English

    Hello. Please tell me if it's possible to say: 1) to declare a message; 2) to announce a message; 3) to sound a message; 4) to voice a message; 5) to present a message; (for example, Diplomats ... a message from the United Nations.) Thank you very much for

    asked by Ilma
  75. precalc

    1. Find (-1+i)^1/3 2. Express 2(cos5pi/3 + isin5pi/3) in regular form. would this be correct: 1-√3i? 3. Find (2+4i)^3 in regular form. 4. Express 5(cos5pi/6 + isin5pi/6) in regular form. would this be correct?: -5√3/2 +5/2i?

    asked by 95
  76. English 7 (journals)

    I have this assignment for english. Ok like I have a journal to write down my daily life (that what we supose to do for english to practice our writing). Is there any decorating notebooks ideas and journal entry ideas for middle schoolers.

    asked by Laruen
  77. physics

    A track star goes in the long jump at 10 m/s at 37 degrees above the horizontal. What is the magnitude of the horizontal displacement?

    asked by Megan
  78. CHemistry

    When O2 reacts with C2H6, according to the equation: 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O, how much CO2 is produced from 60.0 g of C2H6?

    asked by Anonymous
  79. Pre-algebra

    If zero is known as the trivial solution, what happens when x = 1? Can you show me how to solve this step by step? Thank you.

    asked by Sherrie
  80. Government

    Identify two alternative solutions for the high case load of the supreme court

    asked by Eric
  81. human service

    Can you help me understand the meaning of affirmative Action.

    asked by patiance
  82. english

    what logical fallicies are these If Jesus Christ were running for the presidency, conservatives would attack him for being a socialist and wanting to help the poor. They would say he is weak on defense and berate him for driving the money changers from the

    asked by lauren
  83. socials

    what is role of CRTC? you think agency is necessary? explain in paragraph format Role of CRTC is to regulate the amount of foreign material broadcast over the airwaves and impose rules requiring Canadian content. I think it may be a little necessary

    asked by Mohammad
  84. i need help on graphing

    solve each system by graphing 2x-y=4 5x-y=13

    asked by Mandy
  85. social studies

    It says in my textbook that I have to predict what might have happened if the Maya civilization had continued into the present day and then it says to explain. Ms.Sue please, please help me! I need help!!!!!!!!

    asked by Gabby ( 5 grade)
  86. Math Help

    Ali tosses 3 number cubes,and then multiplies the results using the formula a x(bxc)and (axb)x c.Which property of multiplication does Ali use? a(Associative Property Of Multiplication b(Commutative Property Of Multiplication c(Distributive Property Of

    asked by Sara Pleaseee
  87. Physics

    A 65-kg diver jumps off a 10.0-m tower. a) Find the diver's velocity when he hits the water. b) The diver comes to a stop 2.0m below the surface. Find the net force exerted by the water. I get the first part: sqrt(2ad), thus about 14 m/s downwards. For

    asked by Garrett
  88. algebra

    I have a problem that I have no idea how to solve. The instruction say to solve and check the given equation by rational exponents. The equation is: x to the 5/2 power = 32. Can you show me how to do this step by step?

    asked by ron
  89. 8th grade math

    SUZIE HAD TO WRAP A TRUCK,A CAR, A BUS AND A TRAIN. IN HOW MANY ORDERS CAN SHE WRAP THESE PRESENTS?

    asked by stella
  90. Physics

    A box is being pushed up the ramp by you at a 15 degree angle. The coefficient of kinetic friction between the box and ramp is .4. The box has a mass of 12 kg and you are pushing up the ramp with a force of 95N. What is the kinetic frictional force? What

    asked by robert
  91. algebra, please help

    multiply and simplify (y^2+10y+25)/(y^2-9)x(y^2+3y)/(y+5)

    asked by Anonymous
  92. need help please

    solve each system graphically. be sure to check your solution. if a system has an infinite number of solutions, use the set-builder notation to write solution set. if a system has no solution, state this. where appropriate, round to the nearest hundredth.

    asked by Mandy
  93. math

    A diagonal of a rectangle measures 61cm. The width of the rectangle is 11cm. Find the length of the rectangle.

    asked by mandy
  94. chemistry

    0.249 g of a diatomic element occupies a volume of 125mL at 120 degrees C ad 2.00 at. This element is? Please help. I'm lost.

    asked by Lisa
  95. Urgent please help! matrices

    solve using matrices x+3y-3z=12 3x-y+4z=0 -x+2y-z=1

    asked by Anonymous
  96. chemistry

    0.249 g of a diatomic element occupies a volume of 125mL at 120 degrees C and 2.00 atm. This element is? Please help. I'm lost.

    asked by Lisa
  97. chemistry

    0.249 g of a diatomic element occupies a volume of 125mL at 120 degrees C and 2.00 atm. This element is? Please help. I'm lost.

    asked by Lisa
  98. ELA

    What sounds correct? The real reasons are cause? Or The real reason is cause? I think its with is

    asked by Jace
  99. solve using cramer's rule

    solve using cramer's rule 3x+4y=-1 5x-2y=4

    asked by Anonymous
  100. physics

    A rectangular loop of side 8cm and 2cm with a smal cut is movg out of uniform magnetic field of magnitude O.3t directed normal to d loop .wat is d emf developed acros d cut if d velocity of d loop is 1cm in a directed normal to d 1) longer side,2)short

    asked by anjan
  101. ALGEBRA

    write in simplified form. g(x)=(x^2-4)/(x^3)÷(x^5-2x^4)/(x+4) i got stuck at (x^-9)x+2/(x^2)x^4(x+3)

    asked by Anonymous
  102. math

    could you please solve and show steps for: 24-8/4*2+4(3)

    asked by Julie
  103. please help

    solve using appropriate method. 3a-12b=9 4a-5b=3

    asked by Anonymous
  104. math

    a 41 inch ribbon was cut into five shorter ribbons of equal length how long was each shorter ribbon

    asked by george
  105. trig

    Prove that the statement is an identity: (tanx/cscx)=(1/cosx)-cosx

    asked by Ashley
  106. Chemistry

    Are these shapes correct?PH3-trigonal pyramidal, CHCl3-tetrahedral, H2S-linear and PO4^-3-tetrahedral?

    asked by Lisa
  107. physics

    A uniformrodofmass2kgandlength1mis supportedby a frictionlesspivot 25 cm down fromthetop,asshown.A smallballof mass 0.5 kg strikesthe stationaryrod horizontallyat 2 m/sandsticks. Astherodswings,whatisthe maximumanglee in degreesthatit makeswith the

    asked by Anonymous
  108. Math 4th grade

    Input 15 ? 30 10 9 3 1 Output 6 18 3 9 ? 30 90

    asked by Diamond
  109. physics

    A uniformrodofmass2kgandlength1mis supportedby a frictionlesspivot 25 cm down fromthetop,asshown.A smallballof mass 0.5 kg strikesthe stationaryrod horizontallyat 2 m/sandsticks. Astherodswings,whatisthe maximumanglee in degreesthatit makeswith the

    asked by Anonymous
  110. Math

    Ali tosses 3 number cubes,and then multiplies the results using the formula a x(bxc)and (axb)x c. Which property of multiplication does Ali use? a(Associative Property Of Multiplication b(Commutative Property Of Multiplication c(Distributive Property Of

    asked by Sara Pleaseee pleasse
  111. Urgent math

    perform the indicated operation and if possible simplify. (2x+4y)/(2x^2+5xy+2y^2)*(4x^2-y^2)/(8x^2-8)÷(x^2+4xy+4y^2)/(x^2-6xy+9y^2) i don't understand this the answer is (2x-y)(x-3y)^2/4(x-1)(x+1)(x+2y)^2

    asked by Anonymous
  112. Question

    did pier 1 anooce the winners of the gift card contest??

    asked by Laruen
  113. math

    if 500 nails weigh 1.35 kilograms, how much do 60 nails weigh?

    asked by Jeesung
  114. hcs/335

    is it important that the organization's ethical values support your ethical values? explain.

    asked by gwen
  115. algebra 1

    There are 16 coins in a piggy bank. The coins are all nickels and dimes. All together the total amount of money in the bank is $1.05. How many of each coin are there?

    asked by rachel
  116. Math

    Can anyone solve this rational inequality y-3/5 < y+2/10

    asked by Wilson
  117. Physics

    What is the approximate energy required to raise the temperature of 5 L of air by 160 °C? The volume is held constant. (Assume air almost entirely consists of nitrogen, oxygen, and argon, and that it is initially at 273 K. Use the numerical data found in

    asked by Khalid
  118. ALgebra

    What would be the gcf for these polynomials equations? (1) 2x3 - 8x2 - 9x + 36 (2) 6x4 -10x³ + 3x².PLEASE HELP!!!

    asked by Chelsea
  119. History

    What was Uncle Sam's motto?

    asked by Jaycee
  120. social studies

    But it doesn't say anything about it !!!!!!!! HELP!!!

    asked by Gabby ( 5 grade)
  121. Math

    The length of a rectangle is 3cm. If the length remains constant, and the width changes, what r the possible perimeters for the different rectangles?

    asked by Lori
  122. math/ algebra

    how can i find the numbers Quadratic equation the sum of 2 whole numbers is 23. their product is 120. find the numbers

    asked by Sara
  123. socials

    what was massey commission? was it established by federal government to investigate the state of Canadian culture?

    asked by Mohammad
  124. Science

    What factors affect weather and climate? I think it's the sun, the water cycle, the atmosphere, and the ocean. The Sun is the most important because you need the sun for water cycle You need the ocean for the water cycle

    asked by Jaycee
  125. Chemistry

    50.0 ml sample of ethylene has a mass of 55.505g. Find the density of ethylene.

    asked by Monique
  126. human services

    A budget systems model is the foundation from which budgeting systems can be used to evaluate the success of an agency or company. How are performance budgeting systems used to evaluate the efficiency and effectiveness of a human service agency? Why is

    asked by susan
  127. Social studi

    I need the verb end each sentence.the boy ( send,sends)letter to his grandma.

    asked by mary
  128. Chemistry

    What is the volume in liters occupied by 37.7 moles of CO2 at 9.54 atm and 55 degrees?

    asked by Syneitra
  129. Social studi

    I need verb sentence .Juno (read, reads) a letter from his grandma.

    asked by mary
  130. chemistry

    A 30.0 mL sample of phosphoric acid is titrated with 18.0 mL of 3.0 M NaOH solution. What is the molarity of the phosphoric acid?

    asked by confused
  131. Math

    An open box is to be made from a 10-ft by 14-ft rectangular piece of sheet metal by cutting out squares of equal size from the four corners and folding up the sides. what size squares should be cut to obtain a box with largest possible volume?

    asked by NONO
  132. chemistry

    How much heat is needed to raise the temperature of 75 grams of copper from 35„aC to 57„aC? The specific heat of copper is 0.385 J/g „aC.

    asked by mario
  133. integral Calculus

    Please help me with this integral problem: ʃ x^2(a^2-x^4)^2dx please help..thanks alot:)

    asked by WAN
  134. chemistry

    How much heat is needed to raise the temperature of 75 grams of copper from 35„aC to 57„aC? The specific heat of copper is 0.385 J/g „aC.

    asked by mario
  135. Math

    Factor the polynomial X^3 + 7x^2 +15x + 9 I tried factoring by grouping. I got stuck at this part: x^2 ( x + 7 )...

    asked by Tea
  136. physics

    how do u find the horizontal force needed to push a wheel that weighs 300N and has a radius of 30m.it also lies on the stairs of 10m

    asked by crystal
  137. Math

    x^3 - x^2 - 14x +24

    asked by Tea
  138. integral Calculus

    ʃ(1-sin A)^2 cos A dA please help.i don't know how to solve this.i need your help

    asked by WAN
  139. calculus

    use differentials to estimate ln(e^4 +1) - ln(e^4)

    asked by caleb
  140. math

    y=1/2x^2+5x+29/2 i need help

    asked by Anonymous
  141. math

    A total of $9000 is invested: part at 6% and the remainder at 14%. How much is invested at each rate if the annual interest is $680

    asked by morgan
  142. math

    perform indicated operations. (5ab)/(a^2-b^2)+(a+b)/(a-b)

    asked by Ruthie
  143. English

    Hello. Will you please tell me if it's possible to use the following verbs with the word "message": 1)to declare; 2) to announce; 3)to sound; 4) to voice; 5) to present. For example, "Diplomats announced a message from the UN urging Syria to stop

    asked by Ilma
  144. Physics/Science

    If a lever problem asks you to find a way to "lift" something, does that mean to balance the object(s), or to tilt it past the equilibrium?

    asked by Cicilia
  145. Math

    Bond : Face Value = 100,000 State Rate = 9% Semi-annual Payments Term = 3years Market Rate of 12% Amortize the bond to determine: Year 1 Interest Expense End of Year 1 carrying value. My Answers: Year 1 Interest Expense = 5,621.05 End of Year 1 carrying

    asked by Matt
  146. calculus

    Calculate f" for f(x)=g(e^(2x)), where g is a function defined for all real numbers & g admits second order derivative.

    asked by AHKSIJ
  147. math

    In a triangle, between J and K is 30in and between J and L is 25 degree, what is the measure of

    asked by bruce
  148. Texas Government

    Following the political realignment that occurred under Franklin Roosevelt, which of these oppositions began to reshape politics in Texas? a. Liberal versus conservative b. Landowner versus businessman c. Black versus white d. Democrat versus Republican e.

    asked by HM
  149. Physical Science

    If a force of 10 N is applied to a 4.5 kg object, then the object will accelerate at 2.22 m/s2? True or false

    asked by Raven
  150. Texas Government

    Which of these defines a majority in elections? a. Three-quarters b. 51 percent c. More than half d. Two-thirds e. 60 percent Is it going to be B or C ?

    asked by HM
  151. math

    perform indicated operations. (a+3)/(5a+25)-(a-1)/(3a+15) (a+3)/5(a+5)-(a-1)/3(a+5)=(a+3)5(a+5)/5(a+5)3(a+5)-(a-1)5(a+5)/5(a+5)3(at5)= 5a^2+25a+15a+75+5a^2+25a-5a-25/5(a+5)3(a+5) i got (10a^2+60a-50)/5(a+5)3(a+5)and that's wrong. where did i go wrong?

    asked by Ruthie
  152. calculus

    given f(x)=ã(x). find the distance of the point P(2,5) from the line tangent to the functions at x=4.

    asked by mike
  153. geometry

    FIND THE THIRD ANGLE IN A TRANGLE IF TWO OF THE ANGLES ARE 43 AND 114

    asked by JAVIER
  154. chemistry II

    how do I calculate how many moles of solute particles are in one mole of naphthalene, C10H8?

    asked by rebecca
  155. trig

    I need to prove parallelogram law using the law of cosines. 2AB^2 + 2BC^2 = AC^2 + BD^2 Please, help me to do this.

    asked by Evelina
  156. Statistics

    Simple Linear Regression Analysis 2. Weight of Car: Miles gallon – Do heavier cars really use more gasoline? The following data were obtained from Consumer Reports (Vol 62 no. 4). Weight of car is in hundreds of pounds. Car Weight 27 44 32 47 23 40 34 52

    asked by Kris
  157. Math

    A rectangle has a measurement of 15 cm long and 9 cm wide. Label another rectangle that is similar and why are they similar?

    asked by Frank
  158. Texas Government

    Who ultimately chooses a president's running mate? a. The electoral college b. The presidential nominee c. The voters Electoral college or Nominee? ia m soo confused

    asked by HM
  159. calculus

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x^2, y = 0, x = 0, x = 3, about the y-axis

    asked by Matthew barlow
  160. world history

    Who won the battle between the English and the Welsh ? the English right?

    asked by mike
  161. Global H.S

    why was the Byzantine empire able to survive for 1,000 years

    asked by ADAM
  162. chemistry

    how is this express understood 40 w/v

    asked by Anonymous
  163. geometry

    Need to find the perimeter in feet... The width is 35ft and 5in The length is 10ft and 3in Need to write the answer in feet... If there is anybody that can point me in the right direction.. I know I have to convert in. into feet.. and 12in= 1 foot

    asked by Bridget
  164. College Physics

    A monatomic ideal gas with a pressure of 1.39x10^5 Pa and has a volume change of 260 L to a volume of 39.0 L. the second pressure is 3.28x10^6. How much work is done?

    asked by Kyle
  165. adverb question

    i have to fill in the blank: adverbs of time tell ___ something happens. I wrote: when adverbs of frequency tell ___ something happens. i wrote : how often or is it also when? can you check this? i have an ARTICLES EXCERCISE 1) ARTICLES ARE USE WITH: a

    asked by marko
  166. 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

    asked by Caroline
  167. physics

    A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.60 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second

    asked by s
  168. US GOVernment

    Which of the following is NOT true of third parties? a. They have never gotten over 10 percent of the popular vote. b. They are formed by independents. c. A majority of Americans favors the idea of a third party. d. They have seldom won electoral votes in

    asked by HM
  169. USA PoliScience

    If candidate A and B win 300,000 and 200,000 votes, what must candidate C win to have achieved a plurality? a. 500,001 b. 250,001 c. 400,001 d. 300,001 e. 350,001 Hmm I would say C or A ?

    asked by HM
  170. physics

    A car starts from rest and reaches a velocity of 8 m/s in 4 seconds. a) What is its acceleration? b)If its acceleration remains the same, what will be its velocity in 15 seconds? plsss helpp meeeeeeeeeeeeeeeeeeeeeee

    asked by bella
  171. Math

    Some students might argue that if you know how to factor a sum of cubes, then you do not need to know how to factor a difference of cubes. Explain why you agree or disagree.

    asked by Jacob
  172. Algebra (URGENT)

    Put this into function form: 2x+5y=20 Thanks!

    asked by Izzy
  173. Algebra 2

    Find each of the following for x^2+5x+6 and x^2+x-2. a) the LCM b) the GCF

    asked by Courtney
  174. 9th grade math

    simplify x^5-x^3+x^2-1-(x^3-1)(x+1)^2/(x^2-1)^2

    asked by Anne
  175. Algebra

    What would be the gcf for these polynomials equations? (1) 2x3 - 8x2 - 9x + 36 (2) 6x4 -10x³ + 3x².PLEASE HELP!!!

    asked by HOPELESS IN N.J.
  176. Texas Government

    Unlike presidential primary elections, general presidential elections focus on the a. party loyalists. b. Electoral College. c. interest groups. d. campaign contributions. e. safe states. Is it going to be B or E ?

    asked by HM
  177. Calculus

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x^2, y = 0, x = 0, x = 3, about the y-axis

    asked by Matthew barlow
  178. Physics help pleaseeeeee

    An oscillator with a mass of 281 g has a speed of 119.1 cm/s when its displacement is 2.80 cm and 34.2 cm/s when its displacement is 7.80 cm. What is the oscillator's maximum speed (in m/s)?

    asked by Me
  179. geometry

    1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial point: (3, 5); Terminal point: (-2, -1) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 In problems

    asked by Cam
  180. math

    shawn is writing down the family recipes in a cookbook. he has 21 recipes left to write down. he has 3 pagegs left to fill up. if he wants to put the same number of recipes on every page, how many go on each?

    asked by Anonymous
  181. math

    Find the length of right side of a triangle if a=2,b=4 so c=?

    asked by mandy
  182. math

    The area of a circle with radius r is given by the formula A=πr^2. If a circle has area 36π square inches, what is the radius?

    asked by mandy
  183. math please help

    find all x-intercepts of the given function f. f(x)=3x+10ã(x) -8

    asked by Anne
  184. math

    Im having a problem understanding this problem so I cant solve it. Bruce knows how many key are on his keyboard, but some don't work. How does Bruce find the number of keys that work? write to explain

    asked by craig
  185. algebra

    what is the unit price of a 5 poung bag of potatoes selling for $4.75

    asked by barbara
  186. preposition questions

    i need to underline the preposition in each sentence and draw an arrow pointing to its object 1) Valentines Day is in February. prep - in pointed to Februaray 2) Ihave new puppy at home. prep = at pointed to home 3) There are 2 pairs of shoes under the

    asked by marko
  187. Math

    X=x^2+3x-10. Graphed as a parabola Include the x,y table please. And line of symmetry.

    asked by Jose
  188. chemistry

    In a similar experiment to yours, one tablet of Antacid A is titrated to its endpoint with 15.5 mL of 0.5 M HCl and one tablet of Antacid B is titrated to its endpoint with 24.3 mL of 0.5 M HCl. Which is the more effective antacid?

    asked by Anonymous
  189. chemistry

    In a similar experiment to yours, one tablet of Antacid A is titrated to its endpoint with 15.5 mL of 0.5 M HCl and one tablet of Antacid B is titrated to its endpoint with 24.3 mL of 0.5 M HCl. Which is the more effective antacid?

    asked by Anonymous
  190. geometry

    Given Quadrilateral ABCD and the points A(-2,6), B(4,6), C(4,-3) and D(-2,-3). What are the lengths of each side, and what is the most specific name for this polygon.

    asked by franky
  191. Physics

    Read each statement below. For each situation, calculate vi, vf, pi, pf, the impulse vector F􏰁t, and the amount of force needed for the change to occur. All situations refer to a truck with a mass of 2840 kg 3.) The truck is at rest. In 5.00s, the truck

    asked by Tasha
  192. English(Review Paper)

    Will you please proofread this? Indigo By:Alice Hoffman Bryce Three Key Events 1. Martha Glimmer lives in the horrible town of Oakgrove. Her two adopted brothers are outcasts in the town of Oakgrove because they have webbed toes and fingers. They all long

    asked by Bryce
  193. English(Review Paper)

    Will you also proofread this? Cut By Patricia Mccormick Bryce Romig If I had the opportunity to ask Patricia Mccormick two questions about the main character, I would ask her why the main character Callie feels as though she has to self mutilate as a way

    asked by Bryce
  194. Urgent math please help

    find a quadratic function that fits the set of data points. (1,4), (-1.6), (-2,16) what did i do wrong, i got -2x^2-x+7

    asked by Anne
  195. Accounting

    Lovvern Trophies makes and sells trophies it distributes too little league ballplayers. The company normally produces and sells between 8,000 and 14,000 trophies per year. The following cost data apply to various activity levels

    asked by Mb
  196. pre calc

    3 radical 3=-3 cot theta on interval 0

    asked by lil wayne
  197. physics

    A race car has a mass of 705 kg. It starts from rest and travels 39.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?

    asked by jayjay
  198. English

    Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. Writing a research paper sounds difficult

    asked by Lisa
  199. pre calc

    you are 7 miles N & 4 miles W of the cabin how do you get back to the cabin? Bearing?

    asked by anne
  200. pre calc

    -4 - (1/2) sin theta=-16 +radical 3 over 4 what are the 2 points of intersection? 0

    asked by joey
  201. english 9

    which paragraph of the article best supports the authors argument against clear cutting?

    asked by robert
  202. science

    What is epilepsey?

    asked by matthew
  203. English

    Maus Chapter 5 questions How did Vladek and Anja escape from Srodula? What is a Kombinator? Is Maus a better book because Art Spigelman chose to share his mother's suicide? Why is Vladek unfriendly to Artie on page 98? What is going on here? The Village of

    asked by Erub
  204. math

    what is the smallest to greatest of these fractions 3/5,7/8,8/10,2/4

    asked by Tanner Bloom
  205. physics

    if a tank was at 62 degrees farenhiet with a pressure of 14.7 psi. what would the presure be if the temperature rose to 178 degrees farenhiet?

    asked by David
  206. Physics

    PLEASE HELPPP! An ice skater hits a patch of rough ice. The rough patch has a kinetic coefficient of friction with her skates of 0.13. The skater's mass is 51 kg. She passes over the rough patch in 0.55 s. What impulse does the rough patch of ice give her?

    asked by Asia
  207. agebra 2 honors

    subsitution with 3 equations (solve for x,y,z) x+y-2z=5 -x-y+z=2 -x+y+32=4

    asked by nitra
  208. poetry

    need help writing a narrative poem on soccer

    asked by aka the fool
  209. Math

    In 1 week, the hours worked by the 6 cashiers at buy and fly were 20,20,29,48,52, and 56. Would using the mean or the median number of hours encourage a person who wants at least 35 hours per week to apply for a job at buy and fly? Explain?

    asked by Frances
  210. Economics

    1. Using AD/AS, describe the short-run and long-run effects of an increase in the money supply on the equilibrium level of production and the price level. Be sure to explain what happens to Total Expenditures (using the 3 effects of spending changes as a

    asked by Douglas Walker
  211. ENGLISH

    IN " THE BELLS," POE USES ____- TO CREATE A STRONG EFFECT. A) ASSONANCE B) INTERNAL RHYME C) ONOMATOPEIA C) COUPLETS. MY ANSWER IS (C). AM I CORRECT?

    asked by cheddie
  212. calculus

    In February, 2002, each episode of "Becker" was typically seen in 8.3 million homes, while each episode of "The Simpsons" was seen in 7.5 million homes. Your marketing services firm has been hired to promote Bald No More, Inc.'s, hair replacement process

    asked by lc
  213. Significant figures

    How many significant figures are there in a) 0.049300 & b) 4.200*10^5. Please help me

    asked by Meron
  214. Chemistry

    calculate the mass of silver nitrate present in 10mL of a 0.5M solution. will someone show me how to do this because i have no idea :(

    asked by Tabatha
  215. trig

    simplify: (2sin(2pie/7))/(3cos(3pie/14)

    asked by Aya
  216. Chemistry

    calculate the theoretical yield for silver

    asked by Tabatha
  217. physics

    if you take a 1 liter bottle of water out of the refrigerator at just above 0 celsius., how much heat will it take to raise the water to 90 celsius, so you can make tea out of it.

    asked by Clay
  218. precalc

    solve x/x^2-4 - 1/x+2=2

    asked by 95
  219. Chemistry

    determine how much copper you will use. based on the mass of silver nitrate, calculate how much copper will you need to ensure copper is the excess reactant. you need to use 300% excess copper. Help me please!

    asked by Tabatha
  220. Geometry

    Line AB (0,0) is perpendicular to line BN (3,4) in the diagram at the right. Angle B is a 90 degree angle. What are the coordinates of point N?

    asked by Rachel
  221. Science

    How many electrons in the first free levels of silicon

    asked by Dakota
  222. Chemistry

    how much silver can you expect to isolate from 10mL of a 0.5 solution of silver nitrate. please help i would really appreciate it

    asked by Tabatha
  223. chemistry

    how many atoms of oxygen are contained in 0.662 mol of magnesium carbonate?

    asked by ooh lala
  224. English

    What would u like to see if u visit a firehouse.

    asked by Sanskriti
  225. math

    There are 57 students in class of 6th and 7th graders. There are twice as many 6th graders. How many 6th graders?

    asked by Sandy
  226. algebra

    What is the answer to this problem? I cannot get it. 10m - 2/5 = 9 3/5.

    asked by Not
  227. math

    What is the scientific notation of 200,400

    asked by cheryl
  228. physics

    Two objects of mass 1.00 × 103 kg each are a distance of 4.00 m from each other. If the center of one mass is regarded as being at the origin of the x-axis, and the other is centered at 4.00 m along the x-axis, what is the magnitude of the gravitational

    asked by Denise
  229. calculus

    Calculate f" for f(x)=g(e^(2x)), where g is a function defined for all real numbers & g admits second order derivative.

    asked by Andrew Roe
  230. Physics help please

    An oscillator with a mass of 281 g has a speed of 119.1 cm/s when its displacement is 2.80 cm and 34.2 cm/s when its displacement is 7.80 cm. What is the oscillator's maximum speed (in m/s)?

    asked by Me
  231. calculus

    Prove that xcosx< sinx for 0

    asked by MTH3312
  232. Ethics in counseling

    Two foundational definitions related to counseling ethics and legal issues. Then analyze how each term is reflected in ethical best practice including working with clients from diverse background

    asked by Jackson
  233. physics

    A 220lb worker loses 8 pounds of sweat during the day. All of the sweat evaporates. How much heat will he lose through evaporation? (Hint. Convert all measures to metric)

    asked by Clay
  234. English

    Please help me with English grammar, especailly punctuation on the following sentence (Thanks in advance): It is essential that we have a complete, itemized up-to-date bill, whether paid or not, for use at the evidence deposition.

    asked by Yelena
  235. Algebra Please help...

    What a steal of a Deal! Hunter went to TV City to buy a new TV. When he got there, he found that the manager was offering a 25% discount on every TV in the store. The one Hunter wanted was last year's model so he got an additional 10% discount on his

    asked by Linda
  236. Algebra Please help...

    What a steal of a Deal! Hunter went to TV City to buy a new TV. When he got there, he found that the manager was offering a 25% discount on every TV in the store. The one Hunter wanted was last year's model so he got an additional 10% discount on his

    asked by Linda
  237. physics

    A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.60 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second

    asked by Anonymous
  238. science

    Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

    asked by kayla
  239. Algebra Word Problem...please help me

    Megalodon Lives Angler went fishing and caught a monster of a fish! The head of the fish was 10 feet long. The length of the tail was equal to the length of the head plus half of the body. The body was as long as the head and the tail together. What was

    asked by Linda
  240. geometry

    a car traveling at 30 meters per second begins to slow down at a constant rate. after 2 seconds its velocity is 16 meters per second. write an equation that represents the cars velocity v after t seconds

    asked by Anonymous
  241. geometry

    Rectangle ABCD BC= 20 DC= 36 Rectangle EFGH FG= 30 HG= 52 how can i prove their not similar

    asked by jiofk
  242. physics

    A rocket in outer space with a velocity of 12,000 m/s. How long will it take to travel 3,000,000 meters?

    asked by Rose
  243. Site not working correctly/Physics

    I posted a question a couple of days ago which was answered by DRWLS - thank you. Unfortunately I am unable to read the guidance provided as the typing is obscured by the adverts down the right hand side of the page. Look forward to replies. Thanks Mike

    asked by Mike
  244. Physics

    How do you calculate the phase constant in degrees given amplitude and frequency?

    asked by Me
  245. Algebra 2

    Solve by completing the square. a² - 2√(3a) + 2 = 0 Solve for x. I don't know if you can use completing the square for this problem. ax^n + b = 0

    asked by Solve by completing the square
  246. chemistry

    calculate the theoretical mass (g) of hydorgen chloride formed in the reaction of sulfuric acid (2.00 mol) with sodium chloride (150g) 2NaCl(s) + H2SO4(aq) = 2HCl (g) + NaSo4(S)

    asked by payton
  247. physics

    The distance between two telephone poles is 59.0 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. draw a free-body diagram of the bird. (do this on paper. your instructor may ask you to turn in this work.)

    asked by ann
  248. algebra rational numbers

    compare < > = 1) - 1/7 -6/7 i got : < 2) -3/4 -3/8 i got: < 3) - 1/2 - 2/10 i got : > 4) - 3/4 -1 i got: < 5) - 1/2 - 5/6 i got: < 6) -4/5 -1/3 i got: > 7) 5.2 > -8.3 8) -6.5 > 6.2 9) -4.9 > -4.3 10) 1.09 < -1.90 11) -1.22 < -6.5 12) -10.2 < -10.23 are

    asked by marko
  249. math

    compare and contrast the perpendicular bisectors, medians, and altitudes of a triangle

    asked by michael
  250. maths

    If y= e(power x) + e(power -x)/2 when y =1

    asked by chrystabelle1
  251. math

    classify triangle ABC by its sides if side AB=6x, side AC=4x+6 and side BC=8x+3. the perimeter of triangle ABC is 63.

    asked by anonymous
  252. calculus

    Evaluate the integral ∫ x/(x+1)^2+4 dx

    asked by AhsanS
  253. maths

    If y= e(power x)+ e(power -x)/2,find x when y = 1

    asked by chrystabelle3
  254. math

    to find the length of a side of a triangle b=8 and c=10 then a=?

    asked by mandy
  255. Physics

    Approximately how long does it take for an oxygen molecule to diffuse across the interior of a cell that is 230 ì m in diameter?

    asked by Jon
  256. Math

    x^3+2x^2-x=2 Find the real number of solutions of the equation

    asked by Linda
  257. Healthcare finance

    Milwaukee Surgical Supplies, Inc., sells on terms of 3/10, net 30. Grosee sales for the year are $1,2000,000 and the collections department estimates that 30% of the customers pay on the tenth day and take discounts, 40% pay on the thirtieth days, and

    asked by hunter007
  258. Chemistry

    You weigh out 196.07mg ferrous ammounium sulfate (FW 392.14) to prepare 250mL of solution which is 0.002M with respect to that compound. The salt is quantitatively transferred into a 250mL volumetric flask and 8mL of 3M H2SO4 is added and then diluted to

    asked by Ken
  259. Physics

    A 103.0 g mass attached to a horizontal spring oscillates at a frequency of 2.52 Hz. At t = 0 s , the mass is at x = 6.31 cm and has a velocity of -11 cm/s. Determine the phase constant in rad. Determine the total energy in J. Determine the position (in

    asked by Me
  260. Math

    Find the real-number solution of the equation. 3x^7 = 81x^4 I got this far... 3x^7 - 81x^4 = 0 x^4 (3x^3 - 81) = 0

    asked by Linda
  261. criminal investigations

    do the objectives of a criminal investigation change with the type of investigation

    asked by Annette
  262. math help please

    if you divide this number by 2 you will get 3 multiplied by 6. Subtract 3 groups of 3 and you will get 3 multiplied by 9. I am so confused trying to help my 8 year old figure this out i have come up with 9 then 36 then 0

    asked by daniel's mom
  263. science-biology

    I'm pretty sure the answer is A, am I correct? Natural selection tends to A) increase the frequency of characteristics that enhance survival and reproduction. B) decrease the number of individuals in any given population. C) lead to an increase in genetic

    asked by jon
  264. Chemistry

    If 42.8 L of helium gas is collected at a temperature of 277K and has a mass of 4.84 grams, what is the pressure of the sample in torr?

    asked by Cami
  265. MATH

    HARRIET BOUGHT CHRISTMAS CARDS. SHE BOUGHT 1 BOX WITH 15 CARDS FOR $18.00, 1 BOX WITH 12 CARDS FOR 20.00, AND 2 BOXES WITH 10 CARDS FOR $8.00 EACH. WHAT WAS THE AVERAGE PRICE SHE PAID PER CARD?

    asked by NICK
  266. Qoutes

    Hi, I need some qoutes on how faculty members making a great difference to the school.

    asked by S.
  267. statistics

    johns scores are 75,83,74, 75,98,63,83, and 55. if he scores a 75 on his next test, which measures do not change(mean, median, and mode)

    asked by abdi
  268. Physics

    The space shuttle has a weight 2.00 x 10^7 N. The shuttle is accelerated upward at a rate of 5.50 m/s^2. What is the mass of the shuttle? What is the thrust (force) of the combined engines? What is the magnitude of the net force applied to the space

    asked by Hannah
  269. Chemistry

    What is the activation energy for a simple A->B fist order type of reaction with the following rate constants at different temperatures? Temp rate constant (k) 310K 1.77 x 10-1s-1 480K 3.22 x 10^2s-1

    asked by Kristi
  270. socials

    how did automobile culture change neigbourhoods? what businesses develop because this automobile culture? and this in 1950's i think. i write it change neigborhods by closing corner grocery stores and building of large new supermarkets. the shopping mall

    asked by Mohammad
  271. 7th grade English

    Can someone please read this and check if my grammar is correct? Also, is there a protagonist or antagonist in the story? Thanks in advance! The waters were calm today so when I heard a splash as loud as a tarpon, I knew it wasn’t pelican. I sped toward

    asked by Dana
  272. algebra compare rational numbers

    compare < > = 1) - 1/7 -6/7 i got : < 2) -3/4 -3/8 i got: < 3) - 1/2 - 2/10 i got : > 4) - 3/4 -1 i got: < 5) - 1/2 - 5/6 i got: < 6) -4/5 -1/3 i got: > 7) 5.2 > -8.3 8) -6.5 > 6.2 9) -4.9 > -4.3 10) 1.09 < -1.90 11) -1.22 < -6.5 12) -10.2 < -10.23 are

    asked by marko pls help
  273. Math

    How do you factor 49t6 - 4k8?

    asked by Bryan
  274. socials

    what effect tv have on many individuals buying habits in post-war period? what effect it have today? it encourage people to buy more products. youngsters demanded sweetned cereals, barbie dolls, davy crocket hats, and many other advertised goods. effect it

    asked by Mohammad
  275. calculus

    given the function f(x)=x^3 defined for 0

    asked by Romina
  276. physics

    The temperature of 2.7 moles of an ideal gas is 471 K. How much work does the gas do in expanding isothermally to 3.7 times its initial volume?

    asked by Sami
  277. science

    are there any current or new treatments available for epilepsy?

    asked by matthew
  278. MATH

    SUZIE HAD TO WRAP A TRUCK,A CAR, A BUS AND A TRAIN. IN HOW MANY DIFFERENT ORDERS CAN SHE WRAP THESE PRESENTS?

    asked by STELLA
  279. Physics

    In 35.0 s, a pump delivers 0.574 m3 of oil into barrels on a platform 25.5 m above the intake pipe. The oil's density is 0.820 g/cm3.

    asked by Kelly
  280. Physics (balancing one chemical equation)

    Hi :), Please help me balance this equation I would really appreciate it! :) CS2(g)+ O2(g)----> CO2(g)+ S2O4(aq)+HEAT Thank you in advance! :)

    asked by Jill
  281. algebra

    Jenn will use 18 connecting cubes to make a model of a park. The model will b in the shape of a rectangle and will have the height of one cube. In how many different ways can Jenn make the model of the park ?

    asked by Anonymous
  282. english

    Punctuate the sentences and underline the explanatory words. Use the editing guide below. 19 mistakes heath i want to show you how to change a flat tire said dad youll be old enough to drive soon and this is a skill youll need to know you don't want to be

    asked by stephanie
  283. socials

    what life like for many teens in post war period? present answer under following headings: A) independence B) styles C) music D) teens as "target market" Independence for this i think they only have ample leisure time, more money to spend from part-time

    asked by Mohammad
  284. math

    Find the coordinates of th vertex and write the equation of the axis of symmetry given the function f(x)=-x^2-3x-2.Is the vertex a maximum or a minimum?

    asked by Jason
  285. math

    Read the problem. Explain why A cannot be the correct answer choice. Then choose the correct answer. Which fraction is not equivalent to the others? A 2/8 B 1/4 C 6/18 D 3/12

    asked by stephanie
  286. math

    So if 2142.45 divided by 2000 which equals to 1.071225 and I am try to find the rate from that it would be 1.03 which should be 3% or 3.3%?

    asked by mandy
  287. math

    joan has 2 similar rectangular shaped pieces that she is using for her quilt. one has the width of four inches and a lenghth of 6 inches and the other has a width of 6 inches. what is the perimeter of the larger rectangualar piece?

    asked by Anonymous
  288. Social Studies 7R

    What does hardships means???? Because this question is What hardships did the pilgrims face??? I also need help on that question

    asked by Laruen
  289. economic

    a)by use of diagrams where appropriate differentiate between Marshallian and Hicksian demand curves. b)The utility function for a consumer is given as follows: U=X0.3Y0.7. i)derive the Hicksian demands for X and Y. ii)give economic interpretation of the

    asked by audax
  290. Math

    The roots of the equation 4x^2+4x-5 = 0 can be written in the form x = -1+-*SqrtA/2 The value of A is, how exactly do I do this?

    asked by -Untamed-
  291. History: Vietnam War

    I need key FEMALE figures in the anti-war movements for the vietnam war. If you can add detail that would be great.

    asked by RSH
  292. algebra

    find the size of each 5 payments made at the end of each year into a 6% rate sinking fund which produces 76000 at the end of 5 years

    asked by Beth
  293. Physics

    14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?

    asked by Sarah
  294. Math

    y = 0.005x^2-0.801x+46.928 ^ Using that model above, how di I determine the cost per km to the nearest tenth of a cent, at a speed of 70 km/h? I think I use a graphing calculator for this, and since speed is the x value I probably have to insert in 70.

    asked by -Untamed-
  295. Physics

    14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?

    asked by Sarah
  296. social studies

    Predict what might have happened if the Maya civilization had continued into the present day. Explain.

    asked by Gabby ( 5 grade)
  297. Physics

    14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?

    asked by Sarah
  298. Science 7R

    Explain the importance of the cell nucelous in the life of a cell? I need help, I just have to write 1 or 2 sentences to answer this qs.

    asked by Laruen
  299. algebra

    Suppose Mary deposits $200 at the end of each month for 30 years into an account that pays 5% interest compounded monthly. How much total money will she have in the account at the end?

    asked by Anonymous
  300. ALGEBRA

    what is -9y-12(2-3y)= -25-2(y+6)

    asked by Angela
  301. la poetry

    i need help with narrative soccer

    asked by bob