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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

  7. Math

    Explain the euler's formula.

    asked by Brajesh

  8. 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

  9. chemistry

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

    asked by kanniga

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  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. 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

  18. Kumar

    What is science?

    asked by Raj

  19. Math

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

    asked by Bhavya

  20. 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

  21. 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

  22. Math

    What is the definition for composite

    asked by Brianna

  23. Math

    Express in meters and centimeters 2.52cm

    asked by Anonymous

  24. 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

  25. 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

  26. 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

  27. math

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

    asked by Anonymous

  29. 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

  30. 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

  31. 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

  32. 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

  33. 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

  34. Math equation

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

    asked by Anonymous

  35. Physics

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

    asked by Disha

  36. 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

  37. 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

  38. Chemistry

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

    asked by Raeann

  40. math

    how many feet in 96 inches

    asked by perry

  41. 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

  42. Math

    6-3r-3

    asked by Smith

  43. 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

  44. 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

  45. 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

  46. 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

  47. 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

  48. 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

  49. algerbra

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

    asked by Anonymous

  51. 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

  52. 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

  53. 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

  54. algerbra

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

    asked by Anonymous

  55. 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

  56. 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

  57. 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

  58. 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

  59. 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

  60. 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

  62. 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

  63. 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

  64. 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

  65. Chemistry

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

    asked by Anonymous

  66. 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

  67. 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

  68. 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

  69. 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

  70. 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

  71. 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

  73. 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

  74. Solstudies

    What is Williamsburg originally named

    asked by Brianna

  75. 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

  76. 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

  77. 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

  78. 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

  79. Algebra

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

    asked by Anonymous

  80. 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

  81. precalculus

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

    asked by jake

  82. precalculus

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

    asked by emma

  84. 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

  85. 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

  86. 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

  87. 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

  88. precalculus

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

    asked by Anonymous

  89. precalculus

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

    asked by Anonymous

  90. precalculus

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

    asked by Anonymous

  91. 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

  92. 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

  93. precalculus

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

    asked by Anonymous

  95. 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

  96. 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

  97. Algebra

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

    asked by Anonymous

  98. 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

  99. 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

  100. 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

  101. 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

  102. 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

  103. 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

  104. 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

  106. Physics

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

    asked by Giovanni

  107. Math

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

    asked by Emma

  108. Science

    What is equation between ethanethiol and methoxide ion?

    asked by Cheyenne

  109. Math! Help!

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

    asked by Christine (Help!)

  110. Math! Help!

    Domain of X^2-1 ??

    asked by Christine (Help!)

  111. 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

  112. math(Quantitative methods) pls help me out

    Discuss 5 application areas of assignment Methods of Linear programming.

    asked by farahan

  113. 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

  114. calc

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

    asked by Corbin

  115. math

    Discuss 5 application areas of assignment Methods of Linear programming.

    asked by Ras

  117. 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

  118. 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

  119. 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

  120. Amos

    What is the chemcal equation between ethanethiol and methoxide anyone?

    asked by Rani

  121. english

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

    asked by ilovegot7

  122. 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

  123. 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

  124. 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

  125. 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

  126. 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

  128. 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

  129. 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

  130. 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

  131. Math

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

    asked by Stella

  132. 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

  133. 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

  134. 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

  135. 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

  136. 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

  137. 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

  139. 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

  140. 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

  141. 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

  142. 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

  143. 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

  144. 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

  145. 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

  146. 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

  147. Math

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

    asked by Mistie

  148. 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

  150. 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

  151. 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

  152. 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

  153. 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

  154. Sports

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

    asked by Brajesh

  155. 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

  156. 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

  157. 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

  158. 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

  159. 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

  161. 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

  162. 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

  163. 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

  164. 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
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