Questions Asked on
February 25, 2016

  1. Stastistics

    The effect of a drug to change in heart beat by 5 beats per minute over 48 hours in either direction. A two sided test conducted at the 0,05 level of significance will be used. What sample size is needed for this study. The mean for the population u = 75

    asked by Ramon
  2. Social Studies

    Describe with appropriate examples the methods Hitler used in order to achieve his foreign policy aims prior to 1938.

    asked by Maria PLEASE HELP
  3. math

    in the rectangle to the left, what is the length of each side?

    asked by Anonymous
  4. Math

    In the rectangle to the left,if the perimeter was 90 inches,what would the value of x be?

    asked by Anonymous
  5. radicals

    Radicals

    asked by Anonymous
  6. particles of dynamics

    A particle is released on the smooth inside wall of cylinder tank at A with velocity v0 which makes an angle β with horizontal tangent. The radius of the tank is r. Find the maximum height above point A reached by the particle, the magnitude of the

    asked by shwetal
  7. Science

    The ratio of Secondary Turns to Primary In a Transformer is 3 if the EMF In the Secondary Coil Is 600Volts Find The EMF Of Primary

    asked by Basha
  8. math

    Write and solve a real-world problem that you can solve by using objects or drawing a picture.

    asked by anton
  9. Macroeconomics

    Suppose that the government decides to subject producers of this item to a unit excise tax equal to $2 per unit sold. What is the new market price? What is the new equilibrium quantity?

    asked by Linda
  10. physics

    A copper of mass 400g is heated until it's temperature becomes 250 degree celcius.it is dropped into water weighing 200g at 50 degree celcius.calculate the mass of water vapour produced.

    asked by christianah
  11. Physics

    Halley's Comet orbits the sun about every 75 years due to the gravitational force the sun provides. Compare the gravitational force between Halley's Comet and the sun when the Comet is at aphelion (its greatest distance from the sun) and d is about

    asked by Dontworryaboutit
  12. Math

    A 4-inch-wide by 6-inch-long picture is placed on a solid mat that forms a frame around it. The mat is 8 inches long. The mat and the picture are similar rectangles. What is the area of the mat? I couldn't find the width of the mat. If the picture and the

    asked by cass
  13. Physics,geo,life scince,pure maths,

    Hy my name is pretty my schol name is mdingazi doing physics...i don't know what to do about the career i have choosen can u please help.

    asked by Pretty
  14. math

    A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 600 people go to this store each day, how many people would you expect to have a mispriced item? THANK YOU!

    asked by Tim
  15. math

    A random sample of dogs at different animal shelters in a city shows that 12 of the 60 dogs are puppies. The city's animal shelters collectively house 1,200 dogs each year. About how many dogs in all of the city's animal shelters are puppies? THANK YOU!

    asked by Tim
  16. Discrete Math

    Prove that (A ∩ B) ∪ C= A ∩ (B ∪ C) if and only if C ⊆ A. I really need some help on structuring the proof!

    asked by Mimi
  17. physics

    what's the pressure change in water going from a 5.0cm diameter pipe to a 2.0cm diameter pipe if the velocity in the smaller pipe is 4.0m/s .

    asked by Nwabugwu
  18. Calculus

    find the two numbers whose sum of the squares is a minimum if the product of the numbers is 10.

    asked by Regine
  19. Calculus

    A 10 cm x 12 cm rectangular sheet that is used to make a box with open top is to be lined with cushion. if the cushion material for the sides costs four times per square centimeter as that of material for the bottom, find the dimensions of the box if the

    asked by Regine
  20. Calculus

    A gutter with trapezoidal cross-section is to be made from a long sheet of stainless steel that is 30 cm wide by turning up one-fourth of the width on each side. What width across the top will give the maximum cross sectional area?

    asked by Regine
  21. Math

    Completely bemused, do not know how to get the answer. a)8π b)7√2 c)27√π d)7√×7√×1 13- Determine the exact total surface area of a sphere with radius 2√2 metres. a) An inverted cone with side length 4 metres is placed on top of the sphere so

    asked by Ricky
  22. Chemistry

    How does salt hydrolysis work between sodium hydroxide and lactic acid in a titration?

    asked by Hannah
  23. Science

    The height of the tropopause increases near the equator. What does this say about the thickness of the atmosphere?

    asked by Anonymous
  24. genetics and breeds

    A woman with a normal vision whose father was colour blind marries a man with normal vision whose father was also colour blind. This couple has a colour blind daughter with normal complement of chromosomes. Is infidelity suspected?

    asked by kikwai
  25. Chemistry

    Why are liquids that are refrigerated and stored in glass always colder than those refrigerated and stored in plastic or cardboard?

    asked by Ali
  26. Math

    How many liters of water will come in a cylinder shape tank which height is 5 feet length is 10 feet width is 6 feet?

    asked by Mehboob khan
  27. Science

    a ball is rolled off the edge of a dining table 1.5 m high with a horizontal velocity of 2.2 m/s with what velocity does it strike the ground? How far from the edge of the table did it land on the floor?

    asked by Kyla
  28. algebra

    51 is the sum of 8 and Julie's height. Use the variable j to represent Julie's height.

    asked by Gia
  29. physics

    A horizontal ,straight wire carying 12.0A current from west to east is in the earth's magnetic field B.At this place,B is parallel to the surface of the earth ,points to the north and its magnitude is 0.04mT.Determine the magnetic force on 1m length of the

    asked by gourav bhardwaj
  30. Physics

    Find the range at an arrow that leaves a bow at 45 m/s at an angle of 50 degrees above the horizontal level.

    asked by Francis Gabriel
  31. Physics

    Determine the resultant displacement rising analytical method d1 = 400 km, E d2 = 200 km, 20 degrees W of S d3 = 280 km, N d4 = 350 km, 70 degrees E of S

    asked by Francis Gabriel
  32. Physics

    A hose lying on the floor shoots a stream of water upward of an angle of 35 degrees with the horizontal. How high up will strike a building 7 m away if the nozzle velocity is 25m/s

    asked by Francis Gabriel
  33. math

    A trader allows a discount of 20% of his goods and still makes at profit of 25%. Find the profit % made, if he sells his good at (i) Marked price (ii) at 10% discount.

    asked by msc
  34. social studies

    what was the name of england's first overseas colony

    asked by josiah
  35. science

    A piece of metal has a mass of 120 grams.if its volume is 8 cm3.what is its density?

    asked by maxine
  36. Math

    In ∆ABC,D and E divides AB and AC in the ratio of 1:2 respectively. Prove that Vector DE=1/3BC.

    asked by Rabin
  37. science

    how can I prepare 5 micromolar solution of Fe(NO3)3.9H2O? plz guide me as soon as possible

    asked by Soumya
  38. Math Vector

    In ∆ABC, OA=3i-5j, OB=-7i+4j and the position vector of centroid G is 2i+j. Find OC.

    asked by Rabin
  39. math

    is it true a square is a rectangle? my ans is false

    asked by susma
  40. Mensuration

    The leanth and breadth of a playground are 80m and 35m respectively. (i)-How long will a boy take to go three times round the field, if he walks at rate of 1.5m per second?

    asked by Sunil
  41. History

    5.)Which answer best describes how Maryland responded to the national bank created when the U.S. government tried to borrow money after the War of 1812? A.)Maryland passed a law that made the national bank pay a large tax to the state.*** B.)Maryland

    asked by #FreeGucci
  42. statistic

    Assume that adults have IQ scores that are normally distributed with a mean of \mu=105μ=105and a standard deviation \sigma=20σ=20. Find the probability that a randomly selected adult has an IQ less than 145.

    asked by mckenna lester
  43. Calculus

    A telecommunications company has 50,000 units of mobile cellular subscribers and charges P8.00 per minute of voice calls. The officials believe that if the charge is reduced, the number of subscribers will increase at the rate of 1000 units for each

    asked by Xiugine
  44. Calculus

    Two sides of a triangle have lengths 8 m and 13 m. The angle between them is increasing at a rate of 0.08 radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3 radians. Please help I have

    asked by Mary
  45. Math

    According to the Royal Canadian. Mint Act, a 50-cent Canadian coin must have a diameter of. 27.13 millimeters. What is the ... tenth of a square millimeter? ... nearest square inch of the smallest cover that ... area to the nearest tenth of a meter.

    asked by Aaliyah
  46. History

    5.)Which answer best describes why many of the states opposed the Second Bank of the United States? A.)The National Bank created strict banking laws. B.)The National Bank was not bound by state banking laws. C.)The National Bank was in competition with the

    asked by #FreeGucci
  47. Calculus

    A 10 cm x 12 cm rectangular sheet that is used to make a box with open top is to be lined with cushion. if the cushion material for the sides costs four times per square centimeter as that of material for the bottom, find the dimensions of the box if the

    asked by Pauline
  48. COLLEGE,CHEMISTRY

    CH3-C-CH3=CH2+H-OH-->

    asked by RINTU
  49. physics

    An astronaut has a mass of 60kg.what is her weight here on earth

    asked by eshal
  50. history,geography,life science,maths literacy

    provide two reasons why you find this a suitable course for each choice

    asked by mzuphelele zikizela
  51. Geometry

    Find the area of each rectangle wit the given base and height... A=lw 1) 4ft, 4in 2) 30in, 4yd 3) 2ft 3in, 6in 4) 40cm, 2m

    asked by Charlie
  52. maths

    between which two successive interger do the following irrational numbers lie? A.√167 B.^3√80

    asked by precious
  53. chemistry

    Write the chemical equation that oxidize oxalic acid to carbon dioxide and water

    asked by james
  54. history,geography,life science,maths literacy

    what is the description of the traffic

    asked by mzuphelele zikizela
  55. physics

    A bus and a car have an inelastic head-on collision. The bus has a mass of 1.5 × 103 kilograms and an initial velocity of +20 meters/second. The car has a mass of 9.5 × 102 kilograms and an initial velocity of -26 meters/second. What is their total

    asked by bianca
  56. Geometry

    What does the radius of a sphere join? any two points on the sphere and does not contain the center any two points on the sphere and contains the center

    asked by Jessica
  57. history,geography,life science,maths literacy

    what are the admission repuirement for traffic?

    asked by mzuphelele zikizela
  58. Math

    You receive an 11% commission on all the sales you make. If your commission for the month is $512.50, what was your total sales?

    asked by Jennifer
  59. mathematics

    Between which two successive intergers do the following irrational numbers lie? A.√167 B.^3√80 which irrational numbera lies between 5and6?

    asked by precious
  60. history,geography,life science,maths literacy

    provide three possible financial sources for assistance that you can access for funding your studies and indicate the financial obligations you will have if you choose each of these options

    asked by mzuphelele zikizela
  61. 10 drivers ed questions?

    please help!! 1. You can never rely completely on your rearview mirrors when changing lanes because (1 point) they may not be properly adjusted. they are too far apart. they are too small. they have blind-spot areas. 2. While approaching your parked car,

    asked by Anonymous
  62. algebra

    I need help on multiplying and dividing functions. I've seen videos and read and read examples but I still don't get it. I did the last problem which looked like an example I had read but I still don't know if I did it right: f(x)=2x+1 g(x)=3X+2 F(3)/g(2)=

    asked by crissy
  63. Pre-Calculus

    A person flying a kite holds the string 4 feet above ground level. The string of the kite is taut and makes an angle of 60° with the horizontal (see the figure). Approximate the height of the kite above level ground if 500 feet of string is payed out.

    asked by Tim
  64. math

    Please check my answers! Simplify the product. 7x(x+4) A. 7x^2+4 B. 7x^2+28x

    asked by Sage
  65. Physics

    A 4.70 nC point charge is placed at the centre of a hollow metal sphere that has an inner radius 4.70 cm and an outer radius 17.6 cm. The metal sphere itself is charged to 8.40 nC. a)What is the magnitude of the electric field at a distance of 1.60 cm from

    asked by Cindy
  66. math

    Triangle ABC , BC = CD and (angle ABC - angle bac ) =30, the measure of angle and is?

    asked by vivek
  67. Pre-Calculus

    A drawbridge is l = 110 feet long when stretched across a river. As shown in the figure below, the two sections of the bridge can be rotated upward through an angle of α = 34°. a)If the water level is 35 feet below the closed bridge, find the distance d

    asked by Tim
  68. life science,mathematics,agricultural,tourism

    which study fields I should take?

    asked by lovely
  69. Accounting

    A music store sells a CD with a wholesale price of $6 for $10.50 and one with a wholesale price of $14.00 for $20.50. If the markup policy for the store is assumed to be linear, find a function r = m(w) that expresses the retail price r as a function of

    asked by T
  70. statistics

    if a die is tossed four times what is the probability of getting one six

    asked by Nelly
  71. statistics

    if a die is tossed four times what is the probability of getting three odd numbers

    asked by Nelly
  72. statistics

    if a die is tossed four times what is the probability of getting anything but a five on every toss

    asked by Nelly
  73. statistics

    if a die is tossed four times what is the probability of getting at least one six

    asked by Nelly
  74. history

    which mans death became a rallying point for abolitionists? A. John Brown B. Stephan A. Douglas C. Dred Scott D. Abraham Lincoln i think d

    asked by bubbles
  75. College A

    2,900 to grow to $7,000 if the annual rate is 13.5% and interest is compounded monthly?

    asked by t
  76. Math

    Callie surveyed 40 students at her school to see how many have dogs and/or cats. She found that 40% of students who have dogs, don't have cats complete the following table. --- 7 ---- who have cats,have dogs, don't have dogs, total. --- 8 ---- don't have

    asked by Peyton
  77. statistics

    If p(A)=.50, p(B)=.60, and p(A and B)=.30, Are A and B mutually exclusive events? and independent events?

    asked by Nelly
  78. Language Arts

    Compare and Contrast Limerick and The Sidewalk Racer PLEASE HELP ME!!!

    asked by Vanessa
  79. MATH HELP PLEASE Explain

    Brownies and More sell all types of cookies and pastries. On Tuesdays, they markdown all brownies 75% to a sale price of $1.50 a dozen. Find the regular selling price and the markdown of a dozen brownies.

    asked by Bradley
  80. MATH HELP PLEASE Explain

    The Kitchen Kompany operates on a 145% markup rate based on the cost. The markup on the store's new line of cabinets is $300 per cabinet. Find the cost of one cabinet and its selling price.

    asked by Bradley
  81. Math

    What is the best estimate for the sum of 5/12+2/5

    asked by Jonah
  82. life orientation

    How should i advise a friend who reponds to conflict by avoidance on why it is not healthy in sustaining positive relationships?

    asked by melissa
  83. MATH HELP PLEASE Explain

    Onondaga Electronics operates on a net-profit rate of 20% on its printer cables. If the markup is $8.95 and the overhead is $4.31, find the net profit and the selling price

    asked by Bradley
  84. Math help needed urgently

    X + y + z =1 x^2 + y^2 + z^2 =35 X^3 + y^3 + z^3 =97 find x , y. z

    asked by Afeez
  85. Stats

    I there are 1000 numbers in a contest what is the probability you win if: - play 1 number for $1.00 - play 2 numbers for $1.00 - play 1 number for $2.00

    asked by Karl
  86. Math

    A road runs along the south boundary of the SW 1/4 of the SW 1/4 of a section. If the road contains two acres in the area, the width of the road would be: The answer is 66 feet, but I can't calculate it.

    asked by William
  87. Math

    The weights of four different insects are given below. Insect A: 2.19*10^-4 g; Insect B: 5.00*10^-3 g; Insect C: 9.0*10^-2 g; Insect D: 1.50*10^-3 g What is the order of these insects from heaviest to lightest?

    asked by Hope
  88. math

    A deck of cards are shuffled 20 times. You are dealt 12 cards at random: what is the probability that all 12 cards are black? or what is the probability that all 12 cards are kings, queens or jacks

    asked by Bob
  89. History

    7.)Who was the Chief Justice of the supreme Court during Andrew Jackson's presidency? A.)John Calhoun B.)Henry Clay C.)John Marshall*** D.)James Madison C?

    asked by #FreeGucci
  90. Science

    Johnny left a glass of milk on his bedside table for week, and it spoiled. At the end of the weel, the glass contained a yellow liquid with lumpy white chunks, and there was a terrible odor. What can be concluded? A. The milk has undergone a physical

    asked by Anonymous
  91. Pre Cal

    x 2 + y 2 = 0

    asked by Wayne
  92. Language Arts

    What is the meaning of the poem, Grandma Ling?

    asked by OlaftheSnowmen
  93. History

    8.)How did the case of McCulloch vs. Maryland affect economic practices in the United States? A.)It gave the states the right to tax federal banks B.)It gave the people the right to create private banks C.)It gave congress the right to establish a national

    asked by #FreeGucci
  94. Chemistry

    If 0.30 mol N2H4 is reacted with 0.50 mol N2O4, how many moles of N2 can be formed?

    asked by Christian
  95. SS

    How did the Radical Republican Reconstruction plan affect life in South Carolina? a) the law did not give African Americans equal protection b) the state regained the right to decide local matters c) white males who participated in the war were permitted

    asked by Alexis
  96. MATH PLEASE

    1. ZG Jewelers purchased fashion bracelets for $38.87. This jewelry store regularly marks up fashion merchandise 52% of the selling price. What is the minimum selling price that ZG Jewelers should charge? 57.20 59.23 80.98 94.94

    asked by RICHARD
  97. MATH PLEASE

    Lansing Bookery regularly marks up books 40% of the selling price. The bookstore's cost on a new best-selling book is $12.95 per book. What is the selling price of this book? 21.58 33.21 32.38 18.13

    asked by BRAD
  98. MATH PLEASE

    Miday Quong is buying bagels for her coworkers. She buys a dozen bagels priced at $5.49 a dozen. The bakery's cost for making the bagels is $2.25 per dozen. What is the markup rate based on selling price on a dozen bagels? 17.3 41.0 24.4 59.0

    asked by BRAD
  99. Science

    What is the reproduction rate of the bacteria species Vibrio Cholerae?

    asked by Anonymous_01
  100. science

    Two forces whose resultants is 100N are perpendicular to each other. If one of them makes an angle of 60 degree with the horinzontal. Calculate its magnitude

    asked by olayiwola
  101. History

    9.)How did the increase of textile mills and factories in the North affect the population in the South during the period from 1820 to 1850? A.)As more Americans moved to the North to find jobs, the population in the Southern states began to decrease.***

    asked by #FreeGucci
  102. History

    10.)How did Felix Varela's experience contribute to American society? A.)He opposed slavery in Cuba and the U.S. and also aided Irish immigrants.*** B.)He spoke out against racism and helped other European immigrants find work in Florida. C.)Felix Varela

    asked by #FreeGucci
  103. History

    13.)Which answer explains how people in the Northeast felt about the use of natural resources in the south? A.)They were concerned that natural resources were being wasted. B.)They thought the Southerners were harming the environment.*** C.)They depended

    asked by #FreeGucci
  104. Math (Pre-Cal)

    The number of Sasquatch living in northern Ecotopia t years after 2016 is given by the formula s(t)=3(1.12)^t . Determine how long it will take for the Sasquatch population to double. Do this algebraically?

    asked by Ray
  105. Science

    How many valence electrons does an atom of rubidium have?

    asked by Anonymous
  106. Physics Grade12

    two balls are juggled so that each ball is in the air for 1.800s, and the second ball is thrown up at the instant the first starts down. Find the height above the throwing hand where the two balls pass eachother, assuming gEarth=9.800m/s^2 I started with

    asked by Bridget
  107. Periodic table question

    Hi! So I forgot which is which on the periodic table. Are periods the rows and groups are the columns?

    asked by Anonymous
  108. Maths

    In a right angled triangle, two of the angles are in the ratio 6:13. Find the 3rd angle

    asked by Shredder
  109. Math

    The cost-of-living index increased from 100 to 120. What effect does this have on the purchasing power of the dollar?

    asked by Craig
  110. Chemistry 101

    If gold sells today for 1625 per ounce, and a large mining truck hauls 400 tons of gold ore, what is the value of the gold in each truck if each ton of gold ore contains 1.0 ounces of gold? Use dimensional analysis.

    asked by Lilly
  111. Math

    If m< 1=53 , what is m

    asked by K
  112. History

    6.)Which answer best describes how Maryland responded to the national bank created when the U.S. government tried to borrow money after the War of 1812? A.)Maryland passed a law that made the national bank pay a large tax to the state. B.)Maryland repealed

    asked by #FreeGucci
  113. Science

    Which of the following would likely be part of an ionic bond? Choose all that apply (2 points) A. K+1 B. Cl2 C. F-1 D. Ne

    asked by Anonymous
  114. Statistics

    The mean grade in this class last semester was 78.3, and the variance was 49 . The distribution of grades was unimodal and symmetrical. Using this information determine the probability that “Joe”, a random student you know nothing about, other than the

    asked by Francisco
  115. pre-calculus

    Find all the vertical and horizontal asymptotes for (x^2+4x+3)/(x^2-1) All I can figure out is that if the degree of the denominator is bigger than the numerator, then y=0. But I don't know if that's right! Please help. Thank you!

    asked by Anonymous
  116. Math

    You and your friends want to rent a limo on prom night. The limo costs $75 per hour plus a $50 booking fee. You have $350 to spend. How many hours can you have the limo?

    asked by hitman
  117. math

    In a wildlife preserve, a random sample of the population of 150 raccoons was caught and weighed. The result, given in pounds, were 17,19,20,21,23,27,28,28,28 and 32. Jean made the qualitative statement, "The average weight of the raccoon population is 25

    asked by Tim
  118. Chemistry 101

    If gold sells today for 1625 per ounce, and a large mining truck hauls 400 tons of gold ore, what is the value of the gold in each truck if each ton of gold ore contains 1.0 ounces of gold? Use dimensional analysis.

    asked by Lilly
  119. ETH;ICS, CRIME, AND CRIMNAL JUSTICE

    Rather than focusing on specific acts of individuals in specific situations, __________ asks that we consider whether the general practice or issue has good or desirable overall and long-term consequences. A. Kantianism B. Rule utilitarianism C. the golden

    asked by Anonymous
  120. science

    show that the moment of inertia of a uniform rod of length L and mass M about an axis perpendicular to the rod and passing through its center of mass is 1/12(ML^2)

    asked by Jason Young
  121. Science

    A microwave oven supplies 1.000kj per second.how many min should be set on the microwave in order to heat 250.g of water from 24.3 degrees c to its boiling point?

    asked by Lucas
  122. History

    1.)Who increased communication throughout the United States by inventing the telegraph? A.)Elijah McCoy B.)Samuel Morse*** C.)Isaac Singer D.)Eli Whitney 2.)Which of these 19th century inventions made the production of clothing more efficient? A.)Cotton

    asked by #FreeGucci
  123. science

    show that the moment of inertia of a solid cylinder with radius R, mass M, and length L is 1/2(MR^2)

    asked by Jason Young
  124. life orientation

    Write down the name of your course that was your first choice and give description of the course

    asked by phala oscar
  125. statistics

    Identify the level of measurement of the data and explain what is wrong with the given calculation. In a set of data, movie ratings are represented as 100 for 1 star, 200 for 2 stars, and 300 stars for 3 stars. The average (mean) of the 527 movie ratings

    asked by Anonymous
  126. ETHICS, CRIME, AND CRIMNAL JUSTICE

    Kantianism suggests that it is not the consequences of our actions with which we should be concerned, but the: A. practical conclusion. B. ethic of care. C. feelings of virtue. D. actions themselves.

    asked by Anonymous
  127. History

    4.)Which answer best describes how the cotton gin changed cotton farming A.)The cotton gin caused cotton prices to drop because it could be harvested so easily. B.)The cotton gin added to the already high cost of producing cotton, and lowered demand.

    asked by #FreeGucci
  128. History

    2.)Which of these 19th century inventions made the production of clothing more efficient? A.)Cotton gin B.)Sewing machine*** C.)Steam locomotive D.)Mechanical reaper B?

    asked by #FreeGucci
  129. Physics

    a skier, mass 61 kg is at the top of a hill and starts down with an initial speed of 5m/s. he does no work on the way down, assume that the hill surface is frictionless. find his speed at the bottom of the hill which is 10m below the top.

    asked by S
  130. Physics

    a block of mass 2kg moves on a frictionless inline (none of the forces on the block are shown). its initial velocity is v initial=3m/s, and it slides a vertical distance h=10m up the slope and its final velocity is v final=2m/s. find the external work done

    asked by S
  131. Physics

    old faithful geyser in yellowstone park shoots water hourly to a height of 44.8m. with what velocity does the water move when it is at 24.4m above the ground (on its way up)?

    asked by S
  132. Physics

    A box of mass M sits on a table and is connected by a rope passing over a smooth support to another box of mass m that hangs over the edge of the table. (a) What is the acceleration of M ignoring friction (b) and if the coefficient of kinetic friction

    asked by Supansa
  133. Physics

    (a) Two boxes of different mass are at rest on a ramp. What is the minimum coefficient of static friction between the boxes and the ramp if the system is in equilibrium? Given M=(1+0.34)m (b) Suppose there is no friction between the upper box and the ramp.

    asked by Supansa
  134. Physics

    A football player kicks a ball of mass 1.534 kg across the field using a constant force of 13.4 N over a distance 30.0 m. How much work does the football player do? If the ball was initially stationary, what is its final speed?

    asked by Supansa
  135. Physics

    A perfectly efficient machine (e=1) is used to move a 53.4 kg load. The input force moves a distance of 13.4 m as the load rises 1.34 m. What is the mechanical advantage of the machine? What is the magnitude of the input force?

    asked by Supansa
  136. Math

    That ratio of men to women at a lecture is 2 to 5 a total of 63 people are at the lecture how many are men explain how you found your answer

    asked by Marilyn
  137. Geometry

    Where can the medians of a triangle intersect? I. inside the triangle II. on the triangle III. outside the triangle A. I only B. III only C. I or III only D. I, II, or II

    asked by Anonymous
  138. maths literacy, business studies, economics, tourism

    Which career I can qualify in if I have done this subject in metric

    asked by Ayanda mlumani
  139. Algebra

    For what real values of c is x^2 + 16x + c the square of a binomial? If you find more than one, then list your values in increasing order, separated by commas.

    asked by Samantha
  140. Math

    Explain the attern generated by each of your answers. Find 5 different numbers that could be used to fill in the blank. 7,14,21,28,___ Please help me out if you could :)

    asked by Mel
  141. math

    Jeff find some bugs. He finds 10 fewer grasshoppers than crickets. He finds 5 fewer crickets than ladybugs. If Jeff finds 5 grasshoppers, how many ladybugs does Jeff find? How many crickets does he find? Write two equations to solve the problem.

    asked by amere
  142. Social studies

    1. How did the English overcome the Spanish armada? Through religious devotion. Through better military strategy. (MY ANSWER) With a larger navy. By cutting off the Spanish food supply.

    asked by LOVE
  143. Math

    Where can the medians of a triangle intersect? I. inside the triangle II. on the triangle III. outside the triangle A. I only B. III only C. I or III only D. I, II, or II

    asked by Quinn
  144. Math

    A three-strand wire fence around a square 40-acre parcel would require how much wire?

    asked by william
  145. Physics

    What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.

    asked by Emily
  146. Check math please!

    Anna mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will NOT be the letter Mary selects? A. 3/8, 0.375, 37.5% B. 8/5, 1.6,

    asked by Sandy
  147. Alg 2 function operations

    Let f(x) = -5x -4 and g(x) = 6x -7. Find f (x) + g(x) –11x + 3 x + 3 –11x – 11 x – 11

    asked by Sandra
  148. math. metric system

    To convert from a smaller unit to a larger unit you divide or multiply or add by 10 ?

    asked by james
  149. physics

    four forces 8N,6n,2n and 4n act on a point O in the directions north,east,south and west respectively,find the magnitude of their result and the direction of their resultant force.

    asked by vince
  150. Maths

    Find an expression for dy/dx y^3+(1/y)=x^2-7y

    asked by John
  151. math

    1. A farmer has 100 acres of land on which she plans to grow wheat and corn. Each acre of wheat requires 4 hours of labor and $20 of capital, and each acre of corn requires 16 hours of labor and $40 of capital. The farmer has at most 800 hours of labor and

    asked by JaNae
  152. Chemistry

    Calculate how many grams of FeSO4 . 7 H2O (MW = 278.02 g/mol) will be needed to prepare 1 mL of a 0.2 M FeSO4 solution? Am I right when I say we'd need

    asked by Feufolia
  153. Math

    Mario says that are reflecting a point XY across the y axis and then dilating the reflection images by r will produce the same final image as dilating the point by r first and the reflecting the dilation image across the y axis. Use coordinate notation to

    asked by Sqm
  154. Chemistry

    What functional group(s) does 4-Ethylphenol have? I know it has an alcohol. Should I also say that it has an arene?

    asked by Anonymous
  155. Chemistry

    Calculate how many grams of FeSO4.7 H2O (MW = 278.02 g/mol) will be needed to prepare 1 mL of a 0.2 M FeSO4 solution? Is that .0304g?

    asked by Feufolia
  156. mathematics

    what is the sum of 3a+b+a+b? (1) 3a+2b (2) 4a+2b (3) a3power+b2power (4) 4a+b2power (5) 6ab this is a tough one, really not good in this area . :( help!!

    asked by MG
  157. Math

    The roots of the quadratic equation z^2 + az + b = 0 are 2 - 3i and 2 + 3i. What is a+b

    asked by #Thanks
  158. life orientation

    How can advise my friend who responds to conflict by confrontation on why it is not healthy in sustaining positive relationships?

    asked by layla
  159. Mathematics

    The equation of a circle is given by D: x^2 + y^2 - 2x - 4y - 20 = 0 Use implicit differentiation to find the equation of the normal D at the point S(5, -1)

    asked by James
  160. physics

    Adolf and Ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. Face to face, they push off against one another. Adolf has a mass of 104 kg, and Ed has a mass of 80 kg. Following the push, Adolf swings upward

    asked by Tara
  161. Math

    EQUATION: [7(8-4)+16]-[15-(7-8)] MY ANSWER: [7(8-4)+16]-[15-(7-8)] [7(4)+16]-[15-(7-8)] [28+16]-[15-(7-8)] 44-[15-(-1)] 44-16 28

    asked by Shae
  162. educational tec connections academy

    Which of the following rules is most likely to be used in an A.U.P.? A. Communication should be civil and respectful of one another B. Private files can be viewed without permission from the owner C. Proper credit to the source is not necessary if the

    asked by littlefroggy55
  163. science help PLS

    Which of the following is the most likely way for bacteria and viruses to enter a water supply? Increased photosynthesis releases bacteria and viruses Poor sanitation habits cause water to mix with sewage Water from a burst dam sweeps particulate matter

    asked by anonymous
  164. Math

    Nicole deposited $2,000 at 6% simple interest. How long will it be before she has $2,600 in her account? F. 4 Years G. 5 Years H. 6 Years J. 7 Years

    asked by Sidney
  165. Math

    Ari earns $8.25 an hour. He is due for a 15% raise in his hourly rate. About how much is his raise? A $1.00 B $1.20 C $1.50 D $2.00

    asked by Anonymous
  166. Math

    On a roadmap, the distance between two cities is 8.6 centimeters. What is the actual distance if the scale on the map is 2 centimeters to 50 miles? A - 25 miles B - 215 miles C - 430 miles D - 860 miles

    asked by Sidney
  167. MATH

    EQUATION: [7(8-4)+16]-[15-(7-8)] MY ANSWER: [7(8-4)+16]-[15-(7-8)] [7(4)+16]-[15-(7-8)] [28+16]-[15-(7-8)] 44-[15-(-1)] 44-16 28

    asked by Shae
  168. physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 3.05 m/s and v2 = 1.95 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Tara
  169. Algebra

    How many fluid ounces are in a cup?

    asked by Christin
  170. Check math please!

    Anna mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will NOT be the letter Mary selects? A. 3/8, 0.375, 37.5% B. 8/5, 1.6,

    asked by Sandy
  171. history

    What is the importance of Townshend act and Boston Massacre?

    asked by Clarissa
  172. English

    The systems analyst hesitated to talk to strangers about his highly specialized work, fearing it was too ___ for people uninitiated in the computer field to understand. What goes in the blank? a) intriguing b) derivative c) frivolous d) esoteric e)

    asked by Jina
  173. English (Check Answers)

    8. Why does Gwendolen always travel with her diary? She believes people should always have something sensational to read on the train. She is hoping to write a three-volume novel based on her life. She wants to be ready if she has to prove an event took

    asked by Breanna L.
  174. MATH

    EQUATION: [-4-2(-1/2)] / 1/4 MY ANSWER: [-4-2(-1/2)] / 1/4 [-4+1] / 1/4 -3 / 1/4 -3/1 / 1/4 -3/1 x 4/1 -1/1 = -12

    asked by Shae
  175. Language Arts-Poetry

    The Tide Rises, the Tide Falls by Henry Wadsworth Longfellow The tide rises, the tide falls, The twilight darkens, the curlew calls; Along the sea-sands damp and brown The traveller hastens toward the town, And the tide rises, the tide falls. Darkness

    asked by Sammy
  176. Chemistry

    Why is methanol a good solvent to recrystallize biphenyl?

    asked by Danny
  177. World History

    Why was the Ems telegram of particular importance? (a) It started the Austro-Prussian War. (b) It ended the Austro-Prussian War. (c) It started the Franco-Prussian War.**************** (d) It ended the Franco-Prussian War.

    asked by Jessie
  178. Chemistry

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C

    asked by Karla
  179. math

    Estimate. 1.) A 15% tip on a $37 bill 2.) a 19% tip on a $53 bill 3.) a 17% tip on a $23 bill

    asked by Alexis
  180. World History

    Why did Garibaldi declare himself dictator of the Kingdom of the Two Sicilies? a. He wanted to rule the southern kingdom of Italy. b. He wanted to keep a promise he made to Mazzini. c. He wanted to rid Italy of the Bourbon monarch. ******** d. He wanted to

    asked by Jessie
  181. Chemistry-nudge the

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C

    asked by Karla
  182. World History

    Which of the following leaders would be considered the most anti-revolutionary? (5 points) Mazzini Cavour *********** Garibaldi Bismarck

    asked by Jessie
  183. World History

    (MC)Why was Otto von Bismarck nicknamed the "Blood and Iron Chancellor"? He suffered from an iron deficiency disease. He received a disabling wound in battle. He put political enemies into prison. He preferred to use armed force.*********

    asked by Jessie
  184. World History

    (LC)Who took a diplomatic approach towards Italian unification? A. Cavour****** B. Mazzini C. von Metternich D. Garibaldi

    asked by Jessie
  185. science help

    Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply? An increase in dissolved oxygen A decrease in dissolved oxygen An increase in phosphates A decrease in phosphates is it d

    asked by Oscar
  186. World History

    LC)What was the outcome of the Seven Weeks' War? Austria won and reasserted herself as leader of Germany. Prussia won and reasserted herself as leader of Germany.******* France won and reasserted herself as leader of Germany. No one won. It was a

    asked by Jessie
  187. Mathematics

    x^2(y) = y^2 + 2x What is dy/dx and the coordinates of the stationary points

    asked by James
  188. Stats please help

    if a die is tossed four times what is the probability of getting at least one six

    asked by Nelly
  189. Stats please help

    if a die is tossed four times what is the probability of getting anything but a five on every toss

    asked by Nelly
  190. Stats please help

    if a die is tossed four times what is the probability of getting three odd numbers

    asked by Nelly
  191. Stats please help

    if a die is tossed four times what is the probability of getting one six

    asked by Nelly
  192. Math

    A pool is 19 m long, 12m wide, and 2.7 m in depth, how many cubic meters of water will it hold ? Also how many kilometers will it hold

    asked by Anonymous
  193. English

    The systems analyst hesitated to talk to strangers about his highly specialized work, fearing it was too ___ for people uninitiated in the computer field to understand. What goes in the blank? a) intriguing b) derivative c) frivolous d) esoteric e)

    asked by Jina
  194. math

    create a tree diagram to show all possible arrangements of the word "MATH" how many outcomes exist?

    asked by umnia
  195. Algebra A

    Find all pairs of real numbers (x,y) such that x + y = 6 and x^2 + y^2 = 28. If you find more than one pair, then list your pairs in order by increasing x value, separated by commas. For example, to enter the solutions (2,4) and (-3,9), you would enter

    asked by Soccer beast
  196. Algebra

    Find one pair of real numbers, (x,y), such that x + y = 6 and x^3 + y^3 = 144.

    asked by Help me
  197. Math

    Wanda wants to have a test average of 90 her four science tests. On the first three tests, she got scores of 84, 96, and 85. What does she need on her last test to reach her goal?

    asked by Sidney
  198. MATH

    EQUATION: -7-3[-80/|12-10|] MY ANSWER: -7-3[-80/|12-10|] -7-3[-80/|-8|] -7-3[80/8] -7-3[-10] -7+30 23 I use a lot of steps so I can keep track of what I am doing. It helps me be more organized and focused. Hope it doesn't make too much trouble for you. :)

    asked by Shae
  199. Math

    Eighty senators voted yes on a bill to allow unintended pets to enter supermarkets and shop for their own food. The bill passed by a ratio of 7:3. How many total people voted for or against the bill?

    asked by Anonymous
  200. Math

    Suppose a and x satisfy x^2 + (a-1/a)x - 1 = 0. Solve for x in terms of a.

    asked by I like turtlez
  201. Math

    The area of a rectangle is 247 cm^2. The width and length are both whole numbers greater than 1. What are the dimensions of the rectangle?

    asked by Anonymous
  202. English

    How to write an informative essay and please no links.

    asked by Anonymous
  203. English

    Through her work at the center for the family in transition, Wallerstein has come to see divorce not as a single circumscribed event but as ___ of changing family relationships as a process that begins during the failing marriage and extends over many

    asked by Jina
  204. STATISTIC

    A two-tailed test is conducted at the 0.10 significance level. What is the P-value required to reject the null hypothesis? A. Greater than or equal to .010 B. Greater than or equal to 0.05 C. Less than or equal to 0.10 D. Less than or equal to 0.05 MY

    asked by Vedrana
  205. Help Math

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

    asked by Sandy
  206. MATH

    EQUATION: (NOTE: THIS IS A FRACTION) 5-(-2^3)(2)/6xsqrt9 -9x2 MY ANSWER: = 5-(-8)(2)/6x3-9x2 = 5+8(2)/18-9x2 = 5+16/18-18 = 21/0 = undefined

    asked by Shae
  207. Math

    The municipality of Waterloo needs $915,000 from property tax to meet its budget. The total value of assessed property in Waterloo is $14,000,000. What is the tax rate per dollar? (Round your answer to the nearest thousandth.) A. $.07 B. $.065 C. $.071 My

    asked by debbie
  208. statistics please help!

    If 3 cards are drawn with replacement from a shuffled deck, what is the probability that all 3 will be hearts?

    asked by Denise
  209. Language Arts

    What is the pattern of stressed and unstressed syllables and how many metric feet are their in the following line? "Under a spreading chestnut tree" My answer is that the pattern of stressed and unstressed syllables is unstressed, stressed and there are 4

    asked by Sammy
  210. statistics please help!

    If 3 cards are drawn with replacement from a shuffled deck, what is the probability that none of the 3 will be hearts?

    asked by Denise
  211. statistics please help!

    If 3 cards are drawn with replacement from a shuffled deck, what is the probability that at least one of them will be a heart

    asked by Denise
  212. MATH

    what is a good way to show fractions w/ long equations? Example: 93 + (-3 x 9)/22+1(-4 +5) (note: this is a random example)

    asked by Shae
  213. Are all answers right?

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

    asked by Sandy
  214. Math

    Suppose b= 2a-16 and b= a+2. What is the value of a?

    asked by Anonymous
  215. math

    A bond quote of 82.25 in dollars is equal to A. $8.25. B. $82.25. C. $822.50. D. $8,025.50.

    asked by debbie
  216. Math

    The municipality of Waterloo needs $915,000 from property tax to meet its budget. The total value of assessed property in Waterloo is $14,000,000. What is the tax rate per dollar? (Round your answer to the nearest thousandth.) A. $.07 B. $.065 C. $.071 D.

    asked by debbie
  217. History

    What led to the fall of the Roman Empire in Western Europe, specifically in terms of political instability, economic and social problems, weakening frontiers, and the split of the empire. This is a study guide question. I just need some help figuring out a

    asked by Sarah
  218. Math

    A retail store purchases mp3 players for $33 and then sells the same mp3 players for $54.What is the percent of increase?

    asked by Anonymous
  219. English

    What part of the essay makes the reader really know that it's an argumentative essay

    asked by Anonymous
  220. math

    Alvin ate 5/8 of a pizza, if there were 16 slices of pizza. how many slices did Alvin eat?

    asked by Haley
  221. Statistics for the Behavioral Sciences

    Complete an independent project, collect data from your observation experiment and perform a one-way, between-subjects ANOVA on the data using the definitional formula.Include the following: 1. description of research project that includes the operational

    asked by Pamela
  222. Math

    A bond quote of 82.25 in dollars is equal to A. $8.25. B. $82.25. C. $822.50. D. $8,025.50. B?

    asked by debbie
  223. Math- volume

    What could be the length and width of a rectangular prism with a volume of 48 cubic feet and a height of 3/4 foot?

    asked by Anonymous
  224. Math

    Kris bought a new fur coat for $8,000. She must pay 5% sales tax and 7% excise tax. The furrier is End of exam shipping the coat, so Kris must also pay a $15 insurance charge. What is the total purchase price of the coat? A. $8,400 B. $8,960 C. $8,560 D.

    asked by debbie
  225. One Math

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

    asked by Sandy
  226. Math

    If two triangles are congruent, then their areas are equal ( write its negation in converse or contrapositive & In symbolic form ) Logic Chapter

    asked by Dips
  227. Physics

    A child is on a swing whose 4.0 m long chains make a maximum angle of 30 deg with the vertical. What is the child's maximum speed? I've found problems relating to this but include mass or delta(x) in how far from stationary. This problem doesnt include

    asked by Anonymous
  228. Math

    What if I want a garden with 88 square feet and the length measures 11 feet. Is the equation for this 11wx8=88?

    asked by Gail
  229. math

    Stocks are always quoted in A. quarter lots. B. quarters of a dollar. C. decimals. D. percents. B?

    asked by debbie
  230. physics

    The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.011 kg, and its velocity is +731 m/s. Her

    asked by Tara
  231. Math that needs an answer in the next 5-10 min!!!

    Triangle ABC is similar to triangle DEF. Side AB is , and side DE is 6. The scale factor of ABC:DEF is 9. A) TRUE B) FALSE I think its A but I'm not entirely sure... PLZ HELP ASAP!!

    asked by Ally
  232. statistics please help!

    Assume an office has two telephones (A and B) with separate lines and different telephone numbers. The probability that telephone A rings when the office is closed is .30. The probability that telephone B rings when the office is closed is .20. What is the

    asked by Alondra
  233. Math

    Does (8,5) make y=x+6 true?

    asked by Anonymous
  234. Math

    Stocks are always quoted in A. quarter lots. B. quarters of a dollar. C. decimals. D. percents. c?

    asked by debbie
  235. statistics please help!

    Assume an office has two telephones (A and B) with separate lines and different telephone numbers. The probability that telephone A rings when the office is closed is .30. The probability that telephone B rings when the office is closed is .20 What is the

    asked by Alondra
  236. statistics please help!

    Assume an office has two telephones (A and B) with separate lines and different telephone numbers. The probability that telephone A rings when the office is closed is .30. The probability that telephone B rings when the office is closed is .20. What is the

    asked by Alondra
  237. statistics please help!

    Assume an office has two telephones (A and B) with separate lines and different telephone numbers. The probability that telephone A rings when the office is closed is .30. The probability that telephone B rings when the office is closed is .20 What is the

    asked by Alondra
  238. Math

    Cecily made a poster in the shape of a quadrilateral. All the angles and sides of the poster are congruent. Which of the following names the shape of Cecily's poster A. Square** B. Rectangle C. Pentagon D. Trapezoid

    asked by Amayah
  239. Mathematics

    How do you find the coordinates of the stationary points to this implicit differentiation equation? x^2y = y^2 + 2x 2xy + x^2yy' = 2yy' + 2 y'(x^2y-2y) = 2-2xy y' = 2(1-xy) ------------- y(x^2-2)

    asked by James
  240. Math

    As part of a geometry assignment, John drew an equilateral triangle. Which of the following dimensions could represent the side lengths of the triangle John drew? A. 10, 11, 12 B. 13, 15, 17 C. 16, 18, 21 D. 17, 17, 17 **

    asked by Anabel
  241. Science

    Physical properties of silver carbonate.

    asked by Tom Murtha
  242. Math

    A tall building casts a shadow of 20 meters. John, who is 1.5 meters tall, casts a shadow of 10 cm. how tall is the building?

    asked by Gabby
  243. social studies

    improved technology in the production of small cars often results in lower production costs? which of the following will most likely result from these reduced production costs? (1)the price of domestic small cars will decrease. (2)the demand for domestic

    asked by MG
  244. math

    the high temp today was 62 degrees. when nighttime comes, the temp will drop 40 degrees. by 4 am the temp will drop an additional 40 degrees. what is the temp at 4 am?

    asked by k
  245. Math

    a sign on a highway says 6% grade, next 3 miles. this means that the slope of the road ahead is 6/100. how much will you climb in elevation ( in feet) over the next 3 miles

    asked by Anonymous
  246. Math! Problem solving.find the whole group using u

    Lisa's dog has 4 squeaky toys.Two thirds of the dog's toys are squeaky toys.How many dog toys does Lisa's dog have in all?

    asked by Jaci
  247. Stats- is this correct?

    Jar A contains 6 red balls and 4 white balls. Jar B contains 7 red balls and 2 white balls. You randomly select one ball from Jar A and, without knowing it’s color, drop it into Jar B. You then randomly select one ball from Jar B. What is the probability

    asked by Alondra
  248. math

    ian invested $8000 part at 9% per anum and the remainder was at 10% per anum. after one year

    asked by Anonymous
  249. Math

    Matt Miller, age 28, takes out $50,000 of straight-life insurance. His annual premium is $418.20. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the cash value of his policy at the end of 20 years. A. $13,250

    asked by debbie
  250. Chemistry

    2. Does a precipitate of silver chloride form when 200.0 mL of 1.0 x 10-4 M AgNO3 (aq) and 900.0 mL of 1.0 x 10-6 M KCl (aq) are mixed at 25oC?[ Ksp AgCl @ 25oC = 1.6 x 10-10]

    asked by kevin
  251. Math

    1. Hannah drew a pattern using only equilateral triangles. Which of the following statements about the angles is an equilateral triangle is true? A. The measurement of each angle is 60 degrees** B. The measurement of each angle is 120 degrees C. The

    asked by Megan
  252. Chemistry

    Consider the following reaction: CO2 (g) + H2 (g) CO (g) + H2O (g) Calculate the value of the equilibrium constant, Kc, for the above system, if 0.1908 moles of CO2, 0.0908 moles of H2, 0.0092 moles of CO, and 0.0092 moles of H2O vapour were present in a

    asked by kevin
  253. social studies

    children received their schooling at home in many pre-industrial families, with the industrial revolution, more children attended formal schools. which of the following statements best explains why this change in schooling developed? (1)after the

    asked by MG
  254. Science

    Jawless fishes and salamanders are alike in that both types of animals A. are amphibians B. have backbones C. have fins D. are smooth skinned organisms B or D

    asked by Anonymous
  255. Algebra

    Can anyone help me to solve this please: 1) m/16 - 9 = -8 2) -9 + n/4 = -7 3) p/4 + 8 = 7 4) b + 11/3 = -2

    asked by Mike
  256. Math

    The municipality of Waterloo needs $915,000 from property tax to meet its budget. The total value of assessed property in Waterloo is $14,000,000. What is the tax rate per dollar? (Round your answer to the nearest thousandth.) A. $.07 B. $.065 C. $.071 D.

    asked by debbie
  257. Math

    A bond quote of 82.25 in dollars is equal to A. $8.25. B. $82.25. C. $822.50. D. $8,025.50. A?

    asked by debbie
  258. Physics

    If the mass of a planet is 0.103 times that of the Earth and its radius is 0.592 times that of the Earth, estimate the gravitational field g at the surface of the planet. The gravitational acceleration on Earth is 9.8 m/s2. Answer in units of m/s2

    asked by Luhan
  259. Precalc

    Using logarithms to rewrite the expression: 1.) log4.(4)^3x= 2.) 6 log6 36= 3.) 3 log 2 1/2= 4.) 1/4 log4 16

    asked by Anonymous
  260. Math

    Eighty senators voted yes on a bill to allow unintended pets to enter supermarkets and shop for their own food. The bill passed by a ratio of 7:3. How many total people voted for or against the bill?

    asked by Anonymous
  261. Math

    You roll two number cubes and you spin a spinner with 10 colors and numbers 0-16. You win the game if you roll two odd numbers followed by an odd number on the spinner. If you spin once, what is the chance you will win the game?

    asked by Anonymous
  262. math

    im a girl ok um Three out of 200 machine parts were found to be defective. About how many parts would be expected to be defective out of 2500 parts? A. 15 B. 30 C. 38 D. 67

    asked by jj buenrostro
  263. Math (check plz)

    y = 2x + 4 2x - y = 6 Solve the system of equations using substitution. A) (2,8) B) (2,-8) C) (10,24) D) no solution

    asked by Kelly
  264. Chemistry

    The balanced reaction equation for the combustion of heptane, C7H16, is given below. If the reaction produced 37.5 g CO2, how many grams of heptane were burned?

    asked by Veronique
  265. English

    A code of ethics governing the behavior of physicians during epidemics didn't exist until 1846, when it was ___ by the American Medical Association. A) rescinded B) promulgated C) presupposed D) depreciated E) implied

    asked by Jina
  266. History Check My Answer!

    Hey I just have 1 question. What event caused four additional Southern states to secede from the Union? The U.S. accepted West Virginia as a state. The South fired on Fort Sumter. Lincoln declared the Emancipation Proclamation. ****** Lincoln raised an

    asked by Melanie
  267. math

    jar A contains 6 red balls and 4 white balls. Jar B contains 7 red balls and 2 white balls. You randomly select one ball from Jar A and, without knowing it’s color, drop it into Jar B. You then randomly select one ball from Jar B. What is the probability

    asked by Alondra
  268. history

    Explain the advantages and disadvantages for independence

    asked by Bell
  269. math

    If three cards are drawn with replacement from a shuffled deck, what is the probability that at least one of them will be a heart?

    asked by Nelly
  270. English (Check Answers Please!)

    "The importance of being earnest" 8. Why does Gwendolen always travel with her diary? She believes people should always have something sensational to read on the train. She is hoping to write a three-volume novel based on her life. She wants to be ready if

    asked by Breanna L.
  271. math

    What is the last digit of 3^5^7? Of 7^5^3? Of 11^10^6? Of 8^5^4?

    asked by Anonymous
  272. Math

    The sum of te ages of Karen and her mother is 100. Thirty years ago, Karen's mother was 9 times as old as Karen was then. How old is Karen now

    asked by Anonymous
  273. Math

    What is the percent that is equivalent to a fraction that is one-fourth of 1/2?

    asked by Anonymous
  274. Math

    Scott started to read a novel. He read 21 pages a day. After 7 days, he had 5/8 of the book left. How many pages are there in the book?

    asked by Sidney
  275. Math

    The area of a rectangle is 247 cm^2. The width and length are both whole numbers greater than 1. What are the dimensions of the rectangle?

    asked by Veronica
  276. STATISTIC

    z = 1.8 for Ha: µ > claimed value. What is the P-value for the test?   A. 0.9641 B. 3.59 C. 96.41 D. 0.0359 My answer is B ,NEED HELP PLEASEEE

    asked by Vedrana
  277. Chemistry

    A chemist needs a 50% of sulfuric acid. She mix 2 liters of 20% of sulfuric acid with a sample of 60% of sulfuric acid. Write a equatoin that models the situation and use it to find how much the 50% of the sulfuric acid she needs to use?

    asked by James
  278. ELA (check answers)

    We were about a quarter mile away when quiet swept over the colony. A thousand or more heads periscoped. Two thousand eyes glared. Save for our wading, the world's business had stopped. A thousand avian personalities were concentrated on us, and the

    asked by Melody
  279. Math

    Victoria has a 2-pound package of flour. she uses 2/5 of the flour to make a pizza. She then uses 3/10 of the remaining flour to make bread. Find the weight of the package of flour that she has left. Express your answer in decimal

    asked by Bella
  280. algebra

    An investment account earns 4% per year compounded annually. If the initial investment was $4,000.00, how much is in the account after 3 years? Round your answer to the nearest dollar

    asked by XenaGonzalez
  281. Please help me with stats

    For each of the following levels of statistical significance, state how many times in 100 a statistically significant result would be expected to occur by chance. .10 .05 .025 .01

    asked by Lily
  282. Math

    (5x^3y/20xy^5)^4 According to my teacher the answer is x^8/256y^16, but I don't understand how to get there.

    asked by Max
  283. math

    How many cubes with 1/2 inch side lengths will fit inside a prism with a volume of 56 cubic inches? I'm thinking 112, since 56 * 2 =112, but I'm not sure if that's the right thinking.

    asked by mary
  284. physics

    Find the time constant (T) for the RC circuit with an open switch given t = 10 ms 50% of Qmax charge T = ? Q = CV (1-e -t/T)

    asked by D
  285. Chemistry

    If a metal ore contains 22.5% pure metal, how many pounds of pure metal can be obtained from 79 pounds of metal ore? Answer in units of pounds.

    asked by Hector
  286. Physics

    find the heat flow through the sides of an 25cm tall by 10cm wide of ice water in 46s.The glass is 6.00mm thick; the temperature is inside is 28 celcius, the temperature outside is 50 celcius

    asked by Laura
  287. A.P

    P th term of an AP is 3P-1/6, then .Find the sum of first n term.

    asked by siddharth dwivedi
  288. physics

    an electric heater with a resistance of 40 requires 220v across its terminals. a,what is the power dissipated in the resistor b,how much heat is transferred in 1hour

    asked by suzy
  289. math

    Anna is covering a circular pool with a cover for winter. The pool's diameter is 24 feet. The cover extends 12 inches beyond the edge of the pool, and a rope runs along the edge of the cover to hold it in place. What is the area of the cover? What is the

    asked by Rosella Jonson
  290. Chemistry

    Calculate the mass in grams present in 0.95 mole of sodium hydrogen trioxocarbonate(iv)

    asked by Hukay baso
  291. math

    cora is 4 years older than rose.their ages is 40 how old is cora

    asked by mary ceilo
  292. co-ordinate geometry maths

    find area of triangle abc & triangle def if D E F are mid points of AB BC &CA D(2,1) E(1,0) F(_1,3)

    asked by anila