Questions Asked on
December 11, 2016

  1. Calculus

    If an isosceles triangle has a fixed perimeter P, find the dimensions that maximize that area. Show how you know that it is the maximum.

    asked by Katie
  2. Chemistry

    A scintillation counter detects radioactivity by: A) none of the answers. B) emission of light from a NaI crystal when radioactivity passes through the crystal. C) ionization of argon gas in a chamber which produces an electrical signal. D) analyzing the

    asked by Mimi
  3. Social Studies *Check Answers*

    Anyone mind checking these 2 quiz answers please? Which statement best explains why nation-states write constitutions? A: Constitutions give citizens unlimited powers. B: Constitutions establish nation-states. C: Constitutions allow governments to elect

    asked by Natalie
  4. Maths

    The numerator of a rational number is 17 more than its denominator. The numerator of its absolute is 7 more than its denominator. Find the rational number.

    asked by Brajesh
  5. Math

    A body is falling downwards 48 meters in 4 seconds.calculate,what distance would it fall in 9 seconds. Given that when a body falls,distances varies directly as the square of time.

    asked by Brajesh
  6. Math

    Explain the euler's formula.

    asked by Brajesh
  7. MATH

    Graph is a complete graph -it called K6- IT HAS 6 VETICES. also, every vertex is connected to every other vertex. a) how many possible Hamilton circuits ( say starting from A) including reversals, does the graph have? b) if we were to use the Brute Force

    asked by IM
  8. chemistry

    what is the procedure for the preparation of 10 gram of lead iodide

    asked by kanniga
  9. math

    Drawing 5 cards out of 13 cards numbered 1 to 13 without replacement, what is the probability of having a sum greater than 40 ?

    asked by sara
  10. Chemistry

    Ammonium nitrate is an oxidizing agent and can give rise to explosive mixtures of mixture of two moles of powdered aluminum and 3 moles of ammonium nitrate crystals react exothermically yielding nitrogen gas water vapor and aluminum oxide how many grams of

    asked by Cindy
  11. math

    A lighthouse flashes its light every 12 minutes.Another lighthouse flashes every 18 mins. If the two lighhouses flash together at 12:00 noon,at what time will they next flash together?

    asked by chel
  12. Chemistry

    This same substance is a gas with a density of 1.25 g/L at 127o C and a pressure of 400 torr. What is its molar mass ?

    asked by KC
  13. Material balance

    A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. 60% of the adhering

    asked by Patel bhavya
  14. math

    A rectangular prism has a volume of 162 cubic centimeters. If the length, width, and height are reduced to 1/3 of their original size what will the new volume be

    asked by john
  15. math

    A rectangular prism has a volume of 162 cubic centimeters. If the length, width, and height are reduced to 1/3 of their original size what will the new volume be?

    asked by john
  16. Kumar

    What is science?

    asked by Raj
  17. Math

    if perimeter =20cm,length=6cm then what is its breath

    asked by Bhavya
  18. Java programming

    I have hard time doing this any help? Rewrite the definition of the method setdate and the constructor with parameters so that the values of month, day, and year are checked before storing the date into the data members. Add a method isleapyear to check

    asked by Poohboi
  19. Maths

    Find the number of ways of forming an executive committee of 4 in a social club consisting of 15 members, if a particular man must be in the team

    asked by Zee
  20. Math

    What is the definition for composite

    asked by Brianna
  21. Math

    Express in meters and centimeters 2.52cm

    asked by Anonymous
  22. Math

    How many gallons of water should be added to raise water level 1 inch in a 12 by 24 foot pool?

    asked by Kathy
  23. chemistry

    What volume of 0.900 M HCl is required to complete neutralize 50.0 ml of a 0.500 M Ba(OH)2 solution?

    asked by Subiza
  24. physics forces/kinematic

    What does it mean that 1) A body can have zero acceleration but still in motion. 2) A body can have zero velocity but it's also accelerating. I don't really understand this two points, please explain it to me, thks!

    asked by Cheezel Lim
  25. math

    3/5 are girls,200 is no.of boys what is total no. of students

    asked by Anonymous
  26. Math

    1.a. 123five + 34five b. 1010two - 101two c. 23five * 34five c. What is the contrapositive of r → q? d. The statements p → q and q → r are given. If we know q is true, is p necessarily true? Explain.

    asked by Melissa
  27. Math

    1.Suppose we are given logic statements p, q, and r. a. If p → q and p → r, may we conclude that q → r? Answer yes or no and give a reason why. b. What is the converse of the following: not p → not q c. What is the contrapositive of r → q? d. The

    asked by Melissa
  28. physics

    A wheel starting from rest is uniformly accelerated with alpha=4 rad/seconds square for 10 seconds. It is then allowed to rotate uniformly for the next two seconds and is finally brought to rest in the next 10 seconds. Find the total angle rotated by the

    asked by yogi
  29. Physics

    A child is playing with a remote-controlled racecar on the fire escape of a sixth-floor apartment. An accidental turn sends the car through the railing and over the edge of the fire escape. Explain why the time it takes for the car to fall does not depend

    asked by Wei
  30. AP Chem

    Benzene is a hydrocarbon that is commonly used as a commercial solvent. However, it is carcinogenic; i.e., accumulations in the body can cause cancer. What is the vapor pressure of benzene at 29◦C? The normal boiling point of benzene is 80.0◦C and its

    asked by Swathi
  31. Math equation

    I've won 556 games and tied 4 games and lost 228 games what is my percentage of wins

    asked by Anonymous
  32. Physics

    A solid weighs 6.4 kg in air and 5.6 in water. Find the density of the solid

    asked by Disha
  33. Maths

    The man give 1/2 of his wealth to his wife and 1/6 of his share to two daughters and remaining 45000 give to charity what is his wealth?

    asked by Shani
  34. algebra word problem

    One year, Shannon made $288 from two investments. $1100 was invested at one yearly rate and 1800 at a rate that was 1.5% higher. Find the two rates of interest

    asked by marco
  35. Chemistry

    Draw the Lewis Structure of CH3NCS including all resonance forms. Assign formal charges. Do not include resonance arrows.

    asked by Raeann
  36. math

    how many feet in 96 inches

    asked by perry
  37. Math check - Statistics

    Can someone (preferably one of the long-term tutors) check my answers: Researchers trap 23 devils, and find that 18 of them are infected. Provide an estimate of disease prevalence. p-hat = (18/23)=0.783 Part II: assuming the same disease prevalence from

    asked by Jeremy
  38. Math

    6-3r-3

    asked by Smith
  39. Calculus III

    Hi, this question is about Langrange multipliers. Given f(x,y) = y^2 - x^2, subject to the constraint g(x,y) = 0.25x^2 + y^2 = 1, find the max and mins. So I found the partial derivatives for both f(x,y) and g(x,y): fx = -2x fy = 2y gx = 0.5x gy = 2y And

    asked by Justin
  40. Physics

    if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration

    asked by Avaneesh Narayan Singh
  41. Algebra

    Can you please verify if I did this problem correct. I need to solve for y and then X. Whatever the solution is, I should take the difference of the two numbers. Please let me know if this is correct...I thank you 8x -11y = 170 -6y + x = 49 8x -11y = 170

    asked by Lucille
  42. chemistry

    Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the glassware needed for this

    asked by angy
  43. math check my answer please

    What is the smallest perfect cube that has a factor of 4725? Factors of 4725 are 3,3,3,5,5,7 I have 3^3 and 5^2 and 7. So I need 1 more 5 and 2 more of 7 So: 3^3*5^3*7^3 = 1157625 When I cube root 1157625 it is 105. So is this the answer? The smallest

    asked by samantha
  44. Physics

    if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration 1) 0.88kT 2) 0.47kT 3) 0.62kT 4) 0.31kT

    asked by Avaneesh Narayan Singh
  45. algerbra

    For what value of X can the expression Square root of 55X be further simplified?

    asked by Anonymous
  46. math

    Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

    asked by Anonymous
  47. TX HIST

    Consider these three Supreme Court cases Smith v. Allwright (1944), Sweatt v. Painter (1950), Brown v. Board of Education (1954). What do they have in common, and how did Texans respond? In the 20th century, what were the most important events for

    asked by Anon
  48. TX HIST

    How did Lyndon Johnson alter southern politics? What was it about his being a Texan that influenced him in these actions? How were Texas’ borders created? What is the history of its distinctive shape?

    asked by Anon
  49. algerbra

    What value of X makes 11 the square root of 37x equal to 44 the square root of 37 ?

    asked by Anonymous
  50. TX HIST

    During the 20th century, what has happened to make TX more like the rest of the nation? On the other side of that question, what is truly distinctive about TX that will have a continuing influence on TX’s future?

    asked by Anon
  51. algebra

    Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

    asked by Anonymous
  52. Algebra

    This excerpt comes from a letter Jefferson wrote in response to the supreme courts decision on marbury v.madison. what was Jefferson's greatest concern? A. He was concerned that the decision gave the supreme court too much authority. ******* B. He was

    asked by Chicken
  53. US HISTORY - Help please

    Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts

    asked by Caitlyn
  54. algebra 1

    Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

    asked by Anonymous
  55. algebra 1

    A rectangular piece of cardboard has a perimeter of 88 cm. The length of the rectangle is 8 cm longer than three times the width. Find the length and width of the rectangle.

    asked by Anonymous
  56. History

    1. Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts

    asked by Caitlyn - Please help
  57. math

    The shape of a milk carton is a solid composed of a rectangular prism and a pyramid as shown. What is the formula for finding the volume of the milk carton?

    asked by john
  58. Chemistry (PLZ HELP)

    State why you think clothes might be important to clean in hot water. Is it because it has to do with solubility or something?

    asked by Anonymous
  59. Chemistry

    Why do carbonated beverages go "flat" when opened and left and room temperature and pressure?

    asked by Anonymous
  60. Zoology

    Azaleas are flowering shrubs that produce numerous colorful blossoms. Assume that a single gene determines the color of the flowers, and only two alleles for that gene exist. Individuals that are homozygous for the first allele have yellow flowers and

    asked by Lara
  61. algebra 1

    Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

    asked by Anonymous
  62. algebra

    Ms. Easty picked up 3 doughnuts and 4 coffees and paid $4.91. Mrs. martin picked up 5 doughnuts and 6 coffees at the same shop and paid $7.59. How much did 1 doughnut cost? How much did 1 coffee cost?

    asked by Anonymous
  63. algebra

    Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

    asked by Anonymous
  64. AP Calculus AB

    The fence around Wayne Manor (a rectangular plot of land) is going to be replaced. No fence will be required for the side lying along Gotham river. If the new wrought iron fence costs $12 per meter for the side parallel to the river and $4 per meter for

    asked by Stephen
  65. acc 305 accounting

    In addition to disclosing judgments involving estimates and​ assumptions, ________ requires that companies disclose judgments made when determining appropriate accounting treatments. A. IFRS B. U.S. GAAP C. both A​ & B D. neither A nor B answer C

    asked by madam
  66. Algebra 2

    The mass of the particles that a river can transport is proportional to the sixth power of the speed of the river. A certain river normally flows at a speed of 2 miles per hour. What must its speed be in order to transport particles that are 15 times as

    asked by Philip
  67. Solstudies

    What is Williamsburg originally named

    asked by Brianna
  68. Math

    Someone please help me, I do not understand how to solve this problem: Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with σ = 2.0%. A random sample of 10 bank stocks gave the

    asked by Riana
  69. acc 305 accounting

    The fourth step in the financial accounting research process may require you to​ ________. A. cross reference information in the Codification B. work down the levels of the hierarchy to identify a similar transaction C. draft a memo D. change or refine

    asked by madam
  70. precalculus

    Can you please check and correct my answers? Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½ answer: y=2 Given: 5cos6Θ What is the shape of the function? ________________________________________ Limacon

    asked by martha
  71. precalculus

    Given: r = 4/-2-costheta What type of directrix does this conic have? ________________________________________ Vertical Horizontal Oblique This conic does not have a directrix.

    asked by hugh
  72. Algebra

    -12greater than or equal to x^(2)+8x

    asked by Anonymous
  73. precalculus

    Given: r = 4/-2-costheta Is the correct answer -1/2 If not which is the correct answer? What is the distance between the pole and the directrix? ________________________________________ 4 -4 ½ -½

    asked by hugh
  74. precalculus

    Given: r = 4/-2-costheta What type of conic does this represent? ________________________________________ Circle Ellipse Hyperbola Parabola

    asked by jake
  75. precalculus

    Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½

    asked by emma
  76. interior decoration

    Which one of the following fabrics is most suited to a formal setting? A. Silk C. Cotton B. Wool D. Linen

    asked by Anonymous
  77. Geoemtry

    A picture frame has a square picture in the center of the frame, the top and bottom borders are each 2 inches wide and the left and right borders are each 4 inches wide. What is the value of x if the total area of the picture frame is 65.25 inches

    asked by Anonymous
  78. Physics

    Two point sources emit sound waves of 1 m wavelength. The sources are pointed at each other. The sources, 2 m apart, emit waves which are in phase with each other at the instant of emission. a) Where, along the line between the sources are the waves out of

    asked by Z
  79. College Physic

    A 1.54 x 10-2-kg block is resting on a horizontal friction-less surface and is attached to a horizontal spring whose spring constant is 129 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 8.84 m/s, while the spring is

    asked by David
  80. precalculus

    can you explain how you find the eccentricity of r=4/-2-costheta?

    asked by Anonymous
  81. precalculus

    can you please explain how to find the distance between the pole and directrix?

    asked by Anonymous
  82. precalculus

    can you please explain how you determine the type of directrix a conic has?

    asked by Anonymous
  83. ACC 305

    Under​ IFRS, when do firms recognize income on the income​ statement? A. Under​ IFRS, income is recognized on the income statement when the following two criteria are​ met: (1) an increase in future economic benefits related to an increase in an

    asked by madam
  84. precalculus

    what is the formula for finding the eccentricity of r=4/-2-costheta and can you explain how to use it?

    asked by Anonymous
  85. precalculus

    what is the formula for finding the distance between the pole and the directrix?

    asked by Anonymous
  86. English

    1. She didn't need to leave early. 2. She didn't have to leave early. 3. She needed not to leave early. 4. She had not to leave early. --------------------------- Are they all the same and grammatical? Do you use #4 often?

    asked by rfvv
  87. English

    1. I said, "where do you live?" 2. I asked where she lived. 3. I asked where he lived. 4. I asked where they lived. ---------------------------- Can #1 be changed into #2, 3, or 4?

    asked by rfvv
  88. Algebra

    Name two ways to solve for y=2x^2+16

    asked by Anonymous
  89. precalculus

    can you check my work Given: r = 4/-2-6sintheta What is the eccentricity of the function? r = 4/-2-6sintheta r=4/8sin theta r=2sintheta the eccentricity is 2

    asked by Anonymous
  90. Algebra

    The base of a triangle is 3 inches less than twice its height If the area of the triangle is 126 square inches what equation can be used to find h the height of the triangle in inches A. 2h^2-3h+63=0 B.2h^2-3h-63=0 C.2h^2-3h+252=0 D.2h^2-3h-252=0 I think

    asked by Anonymous
  91. Science

    Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring

    asked by Unicorn
  92. Science

    Luis created a clay model of earth and the sun to show how earth rotates, Luis wants to use a toothpick to represent earths axis of rotation Where should he put the toothpick A - horizontally through earth in the direction earth is traveling B - vertically

    asked by Unicorn
  93. Science

    Which statement best describes a spring tide? A - The periodic rise and fall of the water level in the oceans B - the tide if maximum range that takes place two times a month C - the difference in levels of ocean water at high tide and at low tide D - a

    asked by Unicorn
  94. History

    On October 20th 1803 the Senate ratified the Louisiana purchase treating. Vote of 24 to 7 the agreement which provided or the purpose of Western half of the Mississippi River basin from France at a price of 15 million $ or approximately four cents per

    asked by Chicken
  95. Reading

    9. As you're revising an essay, you write down several sentences to describe your intended readers. Why should you do this? To make sure you're writing what you know, not what you believe B. To ensure that you're instructing your audience adequately C. To

    asked by Courtney
  96. Physics

    A tennis ball is released at 30 degrees. It reaches max height of 20 ft find initial speed

    asked by Giovanni
  97. Math

    If there are 860 apples 20% is red and 15% is yellow what percent is green

    asked by Emma
  98. Science

    What is equation between ethanethiol and methoxide ion?

    asked by Cheyenne
  99. Math! Help!

    Please i need the euclidean division of: 2X^3+3X^2-X-5 ÷ X^2-1 Help!

    asked by Christine (Help!)
  100. Math! Help!

    Domain of X^2-1 ??

    asked by Christine (Help!)
  101. Geometry

    Hi I was having some problem with this question, its been a while since I had been in geometry. I think you foil, but Im not sure. Solve for X. 2(x+4)(x+3)= 3(x+2)(x-1)

    asked by George
  102. math(Quantitative methods) pls help me out

    Discuss 5 application areas of assignment Methods of Linear programming.

    asked by farahan
  103. Math

    If Mrs. Jacobsen wants to buy the item with the unit price , what item should she order and how many of that item should she order?

    asked by Jo
  104. calc

    Use l'Hospital's Rule to show that lim x-> infinity (1+1/x)^x =e

    asked by Corbin
  105. math

    Discuss 5 application areas of assignment Methods of Linear programming.

    asked by Ras
  106. Chemistry

    If 8.87 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?

    asked by Dalton Steele
  107. Physics

    1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very

    asked by Shelby
  108. Physics

    A force of 400 N at an angle of 15 degrees above the horizontal is needed to pull a 180 kg trunk across the floor at constant speed. What is the coefficient of kinetic friction between the trunk and the floor?

    asked by Anonymous
  109. Amos

    What is the chemcal equation between ethanethiol and methoxide anyone?

    asked by Rani
  110. english

    What does the author achieve by mixing exact and approximate numbers in "A Contribution to Statistics?"

    asked by ilovegot7
  111. Algebra

    A right triangle has an area of 24 ft^2 the demesions of the triangle are increased by a scale factor of 6 what is the area of the new triangle

    asked by Kayla
  112. physics

    a force of 400 N at an angle of 15 degrees above horizontal is needed to pull a 180 kg trunk across the floor at constant speed. what is the coefficient of kinetic friction between the trunk and the floor

    asked by Anonymous
  113. math

    Paul works for three hours. Sally works 2 1/2 times as long as Paul. Raul works 3/4 hours less than Paul. Tim works 1 1/3 times as long and Raoul. How long does each person work? How long do they work together?

    asked by Kristin
  114. Chemistry

    A 50.0 mL aqueous solution of sodium hydroxide has a pH of 12.50. If 36.00 ml of 0.0200 mol/L sulfuric acid is added to this sodium hydroxide solution, what will be the new pH of the resulting solution? Assume that the temperature stays constant at 25 C,

    asked by Jacob
  115. physics

    A car's internal combustion engine can be modeled as a heat engine operating between a combustion temperature of 1500∘C and an air temperature of 20∘C with 30% of the Carnot efficiency. The heat of combustion of gasoline is 47 kJ/g. Q) What mass of

    asked by Help
  116. Science

    You are pushing a friend on a sled. You push with a force of 20N. Your friend and the sled together have a mass of 60kg. Ignoring friction, what is the acceleration of your friend on the sled?

    asked by Justin
  117. Math

    a scarf is originally priced at $30.00. it is then discounted by 25%. several days later, it is discounted 10% off the new price. is the cost of the scarf the same as if the store had taken 35% off the original $30?

    asked by Paris
  118. math

    A video store charges $3.50 to rent a DVD. Every fourth DVD that a customer rents is free. Brooke paid a total of $252 last year for renting DVDs. How many free DVDs did she receive?

    asked by britt
  119. Math

    Write and solve an equation to find how much water Montana average 3 month temperature is then minnesota

    asked by Stella
  120. English

    Identify and explain a rhetorical strategy used by hawthorne in order to build tension between Chillingworth and Prynne in chapter 4 of the scarlet letter. His choice of words represent suspense between the two. I don't know

    asked by Aria
  121. English

    I need 3 important quotes from the book Iqbal by francesso d'adamo I found one which is about Iqbal Masib who ran away from the Carpet Factory. I need 2 more but I can't find any. Can you please help me?

    asked by hannah
  122. math

    if Mindy has a 20 minute walk to school and she stops for a hotdog that takes 5 minutes to cook how long will it take for her to get to school?

    asked by Anonymous
  123. Math

    If it is 750 calories per hour how many hours would a person have to jump rope in order to lose 1 lb ?

    asked by Rita
  124. math

    A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then

    asked by Jalen
  125. Calc

    This summer Borice decides to put a rectangular swimming pool in his back yard. The material he uses for the border of the length of the pool costs $10 per foot and the material he uses for the width costs $5 per foot. He would like spend $1,000 on the

    asked by Adam
  126. Algebra

    Can you please help me with this problem: The x-intercept of a line has a value of -3/2 and a y intercept of 3. Another line has a slope that is three times the slope of the first line and has a y-intercept that is 28 more than the first line's

    asked by Lucille
  127. Geometry Honors

    A tree stands 22 feet tall and is 382 feet from a building. The tree casts a shadow that is 40 feet long. How tall is the building?

    asked by Michael
  128. Pre-Calculus

    Find P + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) (the k+1 and k in front of the P are subscripts) A. 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] B. 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) C. 7 + 13 + 19 + …+(6k + 1) D. 7

    asked by Iris
  129. Algebra

    Can you please review to see if I am on the right track with this problem: The length of a rectangle is 2 centimeters less than two times the width of the rectangle. If the perimeter of the rectangle is 98 centimeters, what is the length of the rectangle?

    asked by Leroy
  130. Science

    I need help on this fill in the blank science question for my study guide on Cellular Respiration "More active cells need more ______ to release more _______"

    asked by Gene
  131. Algebra!

    Can you please assist with this question: At a school production, adult tickets cost $7.00 each and student tickets costs $4. The Johnson family is going to the 7:30PM show and will purchase half as many adult tickets as student tickets. If the Johnsons

    asked by Please help
  132. Social Studies NEED HELP

    Which statement correctly contrasts the Lancaster Turnpike with the National Road? The Lancaster Turnpike was a longer road. The National Road required users to pay a toll to use it. The National Road was a “corduroy road.” The Lancaster Turnpike was

    asked by Pen
  133. Physics

    1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very

    asked by Shelby
  134. Math

    Can a hexagon have angles that measure 85 62 133 95173 160

    asked by Mistie
  135. math

    A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then

    asked by Jalen
  136. Geometry

    A tree stands 22 feet tall and is 382 feet from a building. The tree casts a shadow that is 40 feet long. How tall is the building? I got 211 feet, but I do not think that is correct. Can you tell me what I am doing wrong? I set it up like this h/382=22/40

    asked by Michael
  137. MAth

    at a city hospital 40 boys and 50 girls were born yesterday. what is the experimental probability that the next baby born will be a girl?

    asked by Kelli
  138. Pre-Calculus

    Which of the following shows the correct first step to prove the following by mathematical induction? 3 + 11 + 19 + 27 + … + (8n - 5) = n(4n - 1) A. 3 + 11 + 19 + 27 + … + (8 • 1 - 5) = 1(4 • 1 - 1) B. 8 • 1 - 5 = 1(4 • 1 - 1) C. 3 + 11 + 19 +

    asked by Iris
  139. Algebra

    Please help: The president will order 5 turkey sandwich combos and 7 steak lunches and spends $124.00. The other president will get 10 turkey combos and 5 steak combos for $140.00. How much is a turkey sandwich combo? Write a system of equation. 5x + 7y =

    asked by Mary
  140. Sports

    Explain the law 'handling the ball' in the field of cricket.

    asked by Brajesh
  141. Algebra

    Can you please help? At a store, you can buy three packs of heavy duty batteries and six boxes of cereal for $48.00. You can also buy two packs of heavy-duty batteries and eight boxes of cereal for $46.00. What is the cost of one pack of heavy duty

    asked by PLEASE HELP...THANK YOU
  142. General

    I just have a question for the people who help the students. Do you guys pick certain people to answer or does it take more time to figure out or answer certain problems over others? Or does it just have to do with the fact that some tutors and volunteers

    asked by Please Answer
  143. algebra

    a certain positive number is equal to nine-tenths of the sum of the number and its reciprocal. find the number

    asked by mark
  144. Chemistry

    4Fe + 3O2 = 2Fe2O3 158g of Fe will react with how many litres of O2 to produce the maximum amount of Fe2O3

    asked by Ethan
  145. Physics

    A 15 ft plank of mass 50 kg is laid across two ladders. The ladders are 5 ft apart, and the plank is laid such that 5 ft of it hang off at each end. You have a mass of 90 kg. (a) How far out past the ladder can you walk before it gets dangerous? I tried

    asked by Joseph
  146. science

    A 12m tall tree to be photographs with pin hole camera it is situated 15 m away from camera how far should screen place from pin hole camera to obtain 15m tall image of tree

    asked by Anonymous
  147. Physics

    arnot’s engine with air as working substance is initially at 3270C and pressure of 12 atmospheres. The volume is one litre to start with. The expansion or compression ratio is 1:6. Find the lowest temperature and efficiency. (γ= 1.4)

    asked by Avaneesh Narayan Singh
  148. math

    Travis is 2121 years older than his sister Michelle. In 99 years, he will be twice as old as Michelle. How old is each of them now?

    asked by kendra
  149. Math

    Here is the question:Consider a data set of 15 distinct measurements with mean A and median B. (a) If the highest number were increased, what would be the effect on the median and mean? Explain. The mean would remain the same while the median would

    asked by Tina