Questions Asked on
February 14, 2017

  1. Vectors - Maths

    In triangle ABD, AC = CD = CB. Let AB = u and BC = v. Prove that DAB is a right angle triangle. AC is the midpoint of the assumed "right angle triangle" and is equidistant from the three vertices. Angle DAB is presumed to be 90. Pls help me with this proof

    asked by C
  2. Math

    Write an expression using an exponent to represent the area of a square with the side length of 13 inches

    asked by Jovi
  3. Vectors Q#2

    Find the shortest distance between the point D with coordinates (-2,-2,9) and the line passing through the points with coordinates B(2,4,6) and C(4,1,5)

    asked by C
  4. math

    karyn purchased a square picture frame. each side measures 1 1/4 feet. what is the area of the picture frame in square feet?

    asked by lyric
  5. Math 115

    A department store is offering a coupon for 21% off for any purchases over $100. How much would you spend for a $100 purchase? You would spend $100. You would spend $79 on a purchase of $100.01 You would spend $79.8 on a purchase of $101.00 You would spend

    asked by nicky
  6. math

    Abel bought 3 similar shirts and 4 similar jackets for $360. Marcus bought 1 such shirt and 3 such jackets for $220. Find the cost of each shirt.

    asked by jazel
  7. 4th grade math

    roxy spends 1/5 hour cleaning the table 3/10 hours washing dishes, and 4/5 hour reading a book. How many hours does she spend doing all these activities?

    asked by ita
  8. algebra

    A truck leaves a depot at 11 A.M. and travels at a speed of 54 mph. At noon, a van leaves the same place and travels the same route at a speed of 64 mph. At what time does the van overtake the truck?

    asked by kristy
  9. Math 115

    Create a piecewise function of the following scenario where D(t) is the total distance walked (in miles) as a function of time t (in minutes): You begin a walk from your home at a fast pace of 6 miles per hour for 30 minutes. You rest for 10 minutes, and

    asked by Julie Potterson UCSC
  10. ELA

    which word is best associated with a flatterer? Artifical****** Helpful Uncomfortable Confident

    asked by Partrisha
  11. Physics

    two identical metallic ball spherical shells A and B charges 4Q and -10c are kept a certain distance apart a third uncharged sphere C is first placed in contact with sphere A and then with sphere B the sphere B are bought in contact and then separated find

    asked by Anonymous
  12. Math

    The total length of 4 blue banner and 5 yellow banner is 49 m. The total length of 2 blue banner and 1 yellow banner is 17 m. All banner of the same colour have the same length. Find the length of a blue banner

    asked by Anonymous
  13. maths

    the rectangular garde of 6 metres by 4 metres is surrounded by a path of uniform width. if the area path is 56m squad, what is its width

    asked by princess
  14. maths

    the rectangular garden of 6 metres by 4 metres is surrounded by a path of uniform width. if the area path is 56m squad, what is its width

    asked by princess
  15. algebra

    if you have a 15 ft ladder and angle it 75 degrees how far from the house will the base of the ladder be

    asked by Anonymous
  16. algebra

    if you have a 15 ft ladder and angle it 75 degrees how far from the house will the base of the ladder be

    asked by Anonymous
  17. Science

    How many grams of ammonium nitrate nedd to be added to 500g of water so that the freezing point becomes -8.3 °C?

    asked by Christ
  18. math

    A train starting at 11 am travels east at 45 km / hr while another starting at 12 noon from the same point trivels south at 60 km / hr . how fast the train separating at 3 p. m

    asked by Anonymous
  19. maths

    find hours to fill a tank of 70m*44m*3m filled by pipe of diameter 35 cm at rate of 6m/ second?

    asked by ojvi
  20. Grade 6: money and measures

    An empty rectangular tank with a base are of 2400 cm2 is filled with water from two taps.one tap can fill the tank with 12 liters of waTer per minute while the other tap can do it at 3 liters per minute. a. what will be the depth of water in the tank after

    asked by Peachie
  21. Math

    Find k so that (x-2) is a factor of x³+kx-4? Kindly help me this one

    asked by Anonymous
  22. Math

    The clock is at 2:30 now its at 2:45 what fraction of a turn did the minute hand move

    asked by Pete Ortiz
  23. Physics

    Why the household appliances starts / runs as soon as we switch them on

    asked by Nagalatha
  24. Grade 6: money and measures

    Jimmy earns $1.50 for every video game he sells. When he sells one carton of 30 video games, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?

    asked by Peachie
  25. Data

    Bridget works part time in a shoe store. Sometimes when it is not busy, she rearranges the shoes for fun. If she takes six different pairs of shoes and rearranges them in a row, in how many ways can she rearrange them so that no two shoes match? Is the

    asked by Bob
  26. history

    which of the following best describes daily life in the south during the civil war? a.about the same as before the war because factories provided necessities b.difficult but tolerable because most people did not experience major changes c.better because

    asked by lilly
  27. Physics

    the funamental notes produced in an open and organ pipe and closed end organ pipe of same length are io ratio

    asked by Vinay
  28. Math

    a u.s based motorcycle manufacturer says that it expects to build 149,000 motorcycles tbis year, up from 137,000 last year. find the percent of increase in production Would it be 8.75 percent increase? I took 149,000-137,000/137,000 and I got .08759124 and

    asked by Katie
  29. chris, Anonymous,,Chris, Kaitlyn

    stop it, you are answer grazing.

    asked by bobpursley
  30. chemistry

    queous solution of sodium phosphate (Na3PO4). Adding which compound to the solution will cause a phosphate compound to precipitate?

    asked by Anonymous
  31. Chemistry

    What mass of sucrose should be added to 75 gram of water to raise the boiling point about 100.35°C.What mass of sucrose is required to produce the solution of this molality?

    asked by Mehreen
  32. Physics

    A child’s toy consists of plastic attached to a spring. The spring is compressed against the floor a distance of 2.46 cm, and the toy is released. The acceleration of gravity is 9.8 m/s2 . If the toy has a mass of 102 g and rises to a maximum height of

    asked by Ke
  33. maths

    ahmed can type 12 stories each consisting of 200 words in 6 hours.how much time will he take to type 7 such storis

    asked by zoha
  34. Mathematics

    Find the number of ways digit 0, 1, 2 and 3 can be permuted to give rise to 2000.

    asked by Divine Aka
  35. Chem

    Complete and balance each of the following molecular reactions. Indicate the phase of each species. If no reaction occurs, write N.R. A) ____ Na2CO3 (aq) + ___ Mg (NO3)2 (aq) --> B)____ K2SO4(aq) + ___ Fe(CH3CO2)2 (aq) --> C)___ AlCl3 (aq) +____ K2S (aq)

    asked by Emily
  36. Algebra

    find the distance between the pair points (-2, -3) and (-12,-19)

    asked by Anonymous
  37. Comprehension

    A Proud Identity for Women Drivers For decades, Russia's women drivers have been laughed off the roads by their male counterparts. A new magazine "Woman at the Wheel" has recently been published with the aim of giving women drivers a proud identity. The

    asked by deyond ng
  38. pysic

    If you stick a piece of transparent tape on your desk and then quickly pull it off, you will find that the tape is attracted to other areas of your desk that are not charged. Why does this happen?

    asked by Elias
  39. Alebra 2

    At what point does the terminal side of the angle (5\pi )/(6) in standard position intersect the unit circle?

    asked by Ray
  40. Maths

    Ben gives 1/3 of his annual savings to charity he spends 3/5 of the rest on domestic bills. 1. What fraction of his savings does he spend altogether 2. Find the fraction of his savings left.

    asked by Nicholas
  41. Physical Science

    An elephant drags a tree trunk along a rough horizontal surface by means of an attached rope which makes an angle of 30° with the horizontal. The force in the rope is 4 000N. CALCULATE the horizontal component of the force exerted by the rope on the tree

    asked by Angie
  42. Physics

    Hi, I'm stuck with the following question: The acceleration due to gravity on Mars is only 3.75m/s^2. You would like to modify an antique grandfather clock so that it would still keep accurate time on Mars. If the length of the pendulum on Earth is l, what

    asked by Grace
  43. Science

    A 60-kg cheetah reaches a speed of 30m\s as it chases its prey. What is the kenetic energy of the cheetah?

    asked by Serafina
  44. American Government

    1) which of the following describes the supreme court's role in defining constitutional principles? A) the supreme court plays a minimal role in defining constitutional principles. B) the supreme court uses judicial review as a tool to define

    asked by Roxanne Lloyd
  45. Chemistry

    Express the absolute value of the partial charges as a decimal fraction of the elementary charge for OH.

    asked by Nicole
  46. physics

    A 0.32 kg box of macaroni is held in place at the front of a 3.14 kg shopping cart only by the force of static friction as the shopping cart accelerates. Determine the minimum acceleration, in m/s 2, that the shopping cart must have if the box is to be

    asked by camilla
  47. Chemistry

    Express the absolute value of the partial charges as a decimal fraction of the elementary charge for CH. The bond length, is 131.1 pm, and the Dipole Moment, D is 1.46

    asked by Nicole
  48. Science 6

    Renny noticed that after oiling his skateboard wheels, it was easier to reach the speeds he needed to perform tricks. How did the oil help? A:The oil reduced friction between the moving parts of the skateboard. B:the oil increased the friction between the

    asked by Jaden
  49. algebra

    Want to make sure I am doing this correctly. Use the Intermediate Value Theorem for polynomials to show that the polynomial function f(x)has zero between the numbers given. f(x)=3x^2-x-4 ; 1 and 2 3(1)^2-1-4= - 2 below zero 3(2)^2-1-4= 6 above zero Am I

    asked by Eric
  50. algebra

    what are the values of 2-5x=-3x^2 a= -5, b = 3, c = 2 a = -3, b = -5 , c = 2 a = 2, b = -5, c = -3

    asked by jass
  51. english parallel structure

    When the movie Star Wars premiered in 1977, it was both surprising and a revolution in its special effects.

    asked by maverick teal
  52. algebra

    the discriminant of a quadratic equation is -5 which answers describes the number and type of solution of the equation? 2 complex solutions

    asked by jass
  53. Exponential

    In 1626, Peter Minuit traded trinkets worth $24 for land on Manhattan Island. Assume that in 2014 the same land was worth $4 trillion. Find the annual rate of interest compounded continuously at which the $24 would have had to be invested during this time

    asked by Jay
  54. Logarithms

    8log8(5) − log8(7) = ?

    asked by Jason N
  55. Logarithms

    log8(8^2) − ln(e^0.5)

    asked by Jason N
  56. Logarithms

    log3(x^log3(x)) = 9 How do you solve for x?

    asked by Jason N
  57. Exponential Equation

    2^x2 + ^x = 4 What is x?

    asked by Jason N
  58. tecca math

    what is greater than 7/8

    asked by Musab issak
  59. Math

    lucky drew an isosceles triangle as shown if the measures of XYZ is 25 what is the measure of XYZ

    asked by Alyssa
  60. Statistics

    A bin of 35 manufactured parts contains 6 defective parts and 29 non-defective parts. A sample of size 5 parts is selected from 35 parts. Selected parts are not replaced. How many different samples are there of size five that contain exactly 2 defective

    asked by Bryan
  61. Calculus

    M = log(E)-11.4/1.5 How do you express E in terms of M?

    asked by Tyler
  62. science

    calculate the maximum height?calculate how long ? land on the ground?

    asked by Nokulunga
  63. Math 115

    Create a piecewise function of the following scenario where D(t) is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 6 miles per hour for 30 minutes. You rest for 10 minutes,

    asked by Holie
  64. College Algebra

    Consider the amount of gas in your car during a road trip. You start out with 45 gallons and drive for 4 hours, leaving you with 27 gallons in the tank. You stop for lunch for 2 hours and then drive for 2 more hours, leaving you with 18 gallons. t= time C

    asked by Kriss
  65. Math

    1. Write the set in roster form: N is the set of real numbers that are factors of 12. A. {2,4,6} B. {1,2,3,4,6} C. {1,2,3,4,6,8,12} D. {1,2,3,4,6,12}***

    asked by EmberShy
  66. Math

    2. Write the set described below in the set-builder notation: S is the set of real numbers that are less than 15 A. o

    asked by EmberShy
  67. Chemistry

    Given that the battery produces a current of 2.5A that passes through molten zinc chloride for 3 minutes what charge would be dissipated through the electrolyte

    asked by Michelle
  68. physics

    A steel aircraft carrier is 358 m long when moving through the icy North Atlantic at a temperature of 1.99 °C. By how much does the carrier lengthen when it is traveling in the warm Mediterranean Sea at a temperature of 22.0 °C?

    asked by Micah
  69. physics

    The Eiffel Tower is a steel structure whose height increases by 19.7 cm when the temperature changes from -9 to +40 oC. What is the approximate height (in meters) at the lower temperature?

    asked by Micah
  70. physics

    A flask is filled with 1.53 L (L = liter) of a liquid at 92.2 °C. When the liquid is cooled to 15.1 °C, its volume is only 1.36 L, however. Neglect the contraction of the flask. What is the coefficient of volume expansion of the liquid?

    asked by Micah
  71. physics

    A thin spherical shell of silver has an inner radius of 5.58 x 10-2 m when the temperature is 25.7 °C. The shell is heated to 133 °C. Find the change in the interior volume of the shell.

    asked by Micah
  72. physics

    A hole is drilled through a copper plate whose temperature is 17.2 °C. When the plate is heated to 191 °C, by what fraction (r-ro)/ro will the radius of the hole change?

    asked by Micah
  73. Algebra

    A department store is offering a coupon for 21 off for any purchases over $100. Construct a piecewise function for the actual cost, C, of the purchase as a function of the original purchase price, P. C= ? ,if 0

    asked by Julie
  74. social studies?

    I need help with my homework. I have to evaluate free school on: Effectiveness Efficiency Equity

    asked by JJ
  75. social stdies

    why does oil bring wealth to arabia and iraq? 1.abundance of wells 2.low cost of production this one 3.high global demand 4.scarcity of water

    asked by triston
  76. Algebra

    If you walk 4/5mile and then jog 3/8 mile what is the total distance covered how much farther did you walk than jog

    asked by Lynette
  77. Social Studies

    Which of the following was an effect of the discovery of gold and silver on western devolpment? It causes a sharp decrease in the population of eastern cities There was no longer a need for the railroad *The value of gold and silver decreased It

    asked by Moesha
  78. Math - Calculus

    The horizontal velocity is constant. (Ignore air resistance.) Recall from your study of trigonometry that if you release a rock at a speed v in a direction that makes an angle α with the horizontal, then the initial vertical velocity vv and the horizontal

    asked by Jamie
  79. Math Calc

    John was wondering at what speed an arrow leaves a bow when it is released. So he went to a field and shot the bow at an angle of 45 degrees. The arrow hit the ground at a distance of 600 feet. Ignore air resistance. For simplicity, assume that the arrow

    asked by Anonymous
  80. Algebra

    Solve the following algebraically using one variable: Find three consecutive even integers such that the product of the smallest integer and the middle integer is eight less than eleven times the larger integer.

    asked by Tony
  81. Algebra

    An electrician charges a customer $260 for 4 hours. He charges one customer $150 for 2 hours. How much does he charge for his service fee, x, and his hourly charge, y, to his customers? Thank you!

    asked by SK
  82. Algebra

    One of the polynomials below cannot be factored using integers. Write “prime” for the one trinomial that does not factor and all the factors for the two that do. a) x2– 5x + 6 b) x2+ x + 6 c) 2x2– 2x + 12

    asked by Tony
  83. alegebra

    Translate the sentence into an inequality. Six subtracted from the product of 2 and a number is at least 18

    asked by chrsitna
  84. FDU

    A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about

    asked by Bobby J
  85. Geometry

    (SAT Prep) The perimeter of pentagon ABCDE is 30 in, AB = 7 in, BC = CD = 6 in, DE = 5 in. How many sides of the pentagon have equal length?

    asked by Olivia
  86. math

    Translate the sentence into an inequality. Six subtracted from the product of 2 and a number is at least 18 Use the variable y for the unknown number.

    asked by chrsitna
  87. math

    Translate the sentence into an inequality. Twice the difference of a number and 4 is at most 21

    asked by chrsitna
  88. Social Studies

    1. What is the Panchantantra? A: a collection of sayings by the Buddha*** B: a book of fables or animal stories C: tales of the Hindu gods D: a recently found text from Mohenjo-Daro I think its A 2. From the text what can you conclude about the Buddha's

    asked by I need help fast please.
  89. Math

    Anna planted peas in 3/8 of her garden and herbs in 1/8 of it. She divides the rest of the garden into 6 sections. What fraction of the original garden is each section?

    asked by Christopher
  90. HISTORY

    american revolution 1775 or 1763? Because I know the first battle was 1775 but I have to make a timeline and put when the event occurred so idk if I should put 1775 or when it all started, 1763.

    asked by Anonymous
  91. Math

    What is the amount of sales tax owed on a $39 jacket if the tax rate is 5%? $1.85 $1.90 $(1.95) $195.00 A flower arrangement was marked down 12.5%. If the flowers originally cost $20, what is the amount of the discount? $2.40 $(2.50) $2.05 $17.50 Find the

    asked by Help I need somebody not just anybody
  92. Cheimistry

    how much water must be added to a 30ml of 0.5M KOH solution to produce a solution whose concentration is 0.45M?

    asked by Ibraheem
  93. Science

    describe what happens, at the molecular level, during melting.

    asked by Joy
  94. Math

    Emma is going camping.Each side triangle on her tent is5 feet tall.The square base 4feet wide.What is the surface area of her tent

    asked by Nestor
  95. Language Arts

    What is the meter of line 6? A wildcat roaring past steep banks A)stressed, unstressed, stressed, unstressed, stressed, unstressed, stressed, unstressed B)unstressed, stressed, unstressed, stressed, unstressed, stressed, unstressed, stressed***

    asked by Sam
  96. Physical Science

    A delivery man pushes the button to ring the doorbell. Which of the following forms of energy is not involved in this process? electrical sound mechanical gravitational my answer is gravitational

    asked by Steve
  97. Maths

    There are 150 mangoes in basket p and basket q. 1/4 of the mangoes in basket p were yellow and the rest were green. 3/5 of the mangoes in basket q were yellow and the rest green. The number of green mangoes in both baskets were equal. How many yellow

    asked by Aj
  98. Math

    Using this formula... E=10^(1.5m+11.4) How much more energy is released in an M = 8.3 earthquake than in an average quake of magnitude M = 6.2? (Round your answer to the nearest integer.)

    asked by Tyler
  99. Science

    what are the similarities between thermal energy and electrical energy

    asked by Aira Orbeso
  100. math

    A college student takes a standardized test and scores a 163. If the mean is 155 and the standard deviation is 7, what is the student’s percentile rank? (Assume a normal distribution.)

    asked by mary
  101. math

    40% of 101?

    asked by lei
  102. Math

    Tell how many terms this expression has : 4c+7 1/2 I don't know how to do this will you please help

    asked by Haily
  103. Math

    If a drawing is scaled 1/8 inch to the foot, what is the actual length, in feet, represented by 3 1/2 inches on the drawing?

    asked by Tammi
  104. Science

    What is a cation?

    asked by Peter Pan
  105. Pretty weird Algebra

    In the word of five, where could you see the number of 4?

    asked by Peter Pan
  106. pre-Calculus

    The coffee starts out at 176 degrees, and cools off like this… Min Degrees 1 169 2 162 3 156 5 146 10 125 15 111 20 101 30 90 60 81 If he measured the coffee at 2 hours and 3 hours, what temperature would it be?

    asked by Tod
  107. English

    "My parents took me to Universal Studios," said George. George said __________________ Need help for the above question. Thanks.

    asked by chimingbell
  108. science

    determine the number of grams of NH4CL that will dissolve in 100 grams of water at 25 Celcius.

    asked by Anthony Harten
  109. Please Help

    Please help I have to do something but do not get what these words mean. Post heart rate Duration

    asked by kacy
  110. American Government PLEASE CHECK MY ANSWER!!

    7. Which of the following six organizing principles are evident in Articles I – III of the U.S. Constitution? Select all that apply. A. Limited government.*** B. Separation of powers. C. Judicial review.*** D. Checks and balances. 8. Which of the

    asked by Ana
  111. Math-Statistics

    CAN SOMEONE HELP ME WITH THIS? A recent study found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least one ear). This is a dramatic

    asked by Kate
  112. Exponential Equation

    In 1626, Peter Minuit traded trinkets worth $24 for land on Manhattan Island. Assume that in 2014 the same land was worth $4 trillion. Find the annual rate of interest compounded continuously at which the $24 would have had to be invested during this time

    asked by Jason N
  113. math

    the width of a math textbook is 0.75 inches. How many math textbooks can be placed standing up on a shelf that is 18inches wide

    asked by arunodroe sneha
  114. Science(chemistry)

    Some students believe that teachers are full of hot air. If I inhale 2.2 litres of gas at a temperature of 18 degree Celsius and it heats to a temperature of 38 degree Celsius in my lungs,what is the new volume of the gas?

    asked by Arthur
  115. Physics

    The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. Find the speed of the roller coaster at the top of the

    asked by Dalton
  116. statistics and probability

    5. A fastener company is supplying washers to a manufacturer of kitchen appliances who has specified that the outside diameter be 0.500 ± 0.025 inch. Measurements made on 250 washers show that the process is in good statistical control, the diameters are

    asked by faye
  117. statistics and probability

    A company has been studying the performance of their sales department. The measure of performance used is: average monthly sales amount in dollars. For the past 12 months, the average monthly sales amount has been $4,532 with a standard deviation of $386.

    asked by faye
  118. Pre calculus

    find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one should have the base of "e"

    asked by Kevin
  119. statistics and probability

    n a written test given to a large class comprising 42 students, the test scores were found to be normally distributed with a mean of 78 and a standard deviation of 7. A minimum score of 60 was needed to pass the test. A score of 90 or greater was needed to

    asked by faye
  120. math

    A farmer has enough food to last his 40 cattle 35 days. If he buys 50 cattle, how long can the same feed can last? Let X be the number of days the same feed can last

    asked by Anonymous
  121. Physics

    A 250.0 kg motorcycle can roll 45.9 m up a long hill before coming to a stop if the motorcycle approaches the base of the hill 30.0 m/s.

    asked by Matt
  122. Physics

    What is the total amount of potential energy that can be stored in a 10,000 gallon water tower built with the water tank 61.50 m above ground level?

    asked by Matt
  123. english

    is "in" a linking verb?

    asked by homework
  124. math

    Identify two regular and two irregular polygons in your home or community. How do you know they are regular or irregular? Give one example of each regular and irregular polygon that you noticed in your home or community. Do you think regular or irregular

    asked by Plz Help, PLZ?
  125. Math

    Know if 28 and 3 if the first number is multiple of the second

    asked by Erika
  126. Help math

    find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one should have the base of "e"

    asked by Kevin
  127. Math

    You shoot a rifle at an angle of 42 degrees. The bullet leaves your rifle at a height of 6 feet and a speed of 810 feet per second. So I used the equation h(t)=6+(810 sin42)t-16t^2 to calculate that the bullet will hit the ground after 33.88580 seconds.

    asked by Anonymous
  128. algebra

    Eye color is determined by genetic combinations.There are 4 possible genetic combinations: RR=Brown,RL=Brown,LR=Brown,LL=Blue.Show a 4 square Punnett square that models these conclusions. Thank you.I hope someone can show me the solution.

    asked by Anneliese
  129. Algebra 2

    It takes 12 hours for 8 people to paint a house. How long will it take 3 people to do the job? I'm not really sure how to go about solving this problem.

    asked by Jennifer
  130. Algebra 2

    Find an equation of variation in which y varies inversely as x and the following is true: y=31, when x=4 Originally, I mixed up the equations of inverse and direct variation, and got 31=m(4) ----- b Obviously, I got it wrong, but I've gone ahead and redid

    asked by Jennifer
  131. chemistry

    How many grams of NH4Cl will dissolve at 50 degrees C?

    asked by demi
  132. chemistry

    How many grams of O2(g) are needed to completely burn 17.3 g of C3H8(g)?

    asked by alex
  133. chemistry

    If 25 g of NH4Cl is dissolved at 80C, how many additional grams would be needed to make the solution saturated?

    asked by Veronica
  134. Math

    The 112th Congress of the United States of America has 535 members, of which 87 are women. An alien lands near the US Capital and treats members of Congress as a random sample of the human race. He reports to his superiors the 95% confidence interval for

    asked by N
  135. Philosophy

    1.What is Pascal's Wager? A.A bet that one cannot lose B.An argument for probability theory C.An argument for the existence of God D.An argument for why you should believe in God E.None of the above 2.Who was Pascal? A.A painter B.A bishop C.A

    asked by Chadra
  136. PreCalc

    6t + 5(t-1)/3 =4 Please help, I keep getting the wrong answer.

    asked by Misty
  137. physics

    A ball is thrown straight up with enough speed so that it is in the air for several seconds. Assume the positive direction is upwards. What is its velocity 1.5s before it reaches its highest point?What is the change in its velocity, v, during this 1.5-s

    asked by barbara
  138. Language Arts

    Hi Im doing an compare and contrast essay and my teacher recommended a stronger thesis and conclusion , if you could give me some ideas and feedback on what I could do to make it stronger please let me know . I would greatly appreciate it . ;+) The

    asked by AJsunshine