Questions Asked on
April 30, 2017

  1. math-precalculus

    A Ferris wheel is 50 meters in diameter and boarded from a platform that is 1 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 6 minutes. How many minutes of

    asked by j
  2. Math-Trigonometry

    Can someone help me with this problem. -A Ferris wheel has a radius of 37.8 feet. The bottom of the Ferris wheel sits 0.7 feet above the ground. You board the Ferris wheel at the 6 o'clock position and rotate counter-clockwise. A)Define a function, f that

    asked by Elizabeth
  3. Chemistry

    net ionic equation to show that sulfurous acid, H2SO3, behaves as an acid in water. I got this answer but do not know if it is correct. H2SO3 + H2O --- H3O + SO I am Not sure if its is tri/mono/diprotic

    asked by Alyssa
  4. Math (Statistics)

    In exercise 12, the following data on x = average daily hotel room rate and y = amount spent on entertainment (The Wall Street Journal, August 18, 2011) lead to the estimated regression equation ŷ = 17.49 + 1.0334x. For these data SSE = 1541.4. City:

    asked by Brandon
  5. Chemistry

    Perpare 500ml of 1M HCl solution from a bottle of concentrated 37%(W/W) HCL stock with a density of 1.19g/ml. 37%= 37/100 x 100 therefore mass is 37g molarity = mol/vol 1= mol/0.5 mol=0.5 mass of Hcl needed = molxmr mass = 0.5 x 36.5 mass = 18.25g

    asked by Ryan
  6. Math

    When Alina was hungry she ate c cookies, which was 30% of all the cookies she had. How many cookies did she have in the beginning?

    asked by Bob
  7. physics

    200g of steam at 110°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?

    asked by robert
  8. Chemistry

    How many grams of ice would be melted by the energy obtained as 16.2 of steam is condensed at 100 degrees celsius and cooled to 0 degrees celsius? I would like to know how it's done step by step.

    asked by Sol
  9. Chemistry

    In a reaction Mg(s) + 2HCl(aq) → H2(g) + MgCl2(aq), 6.00 g of Mg was present at 0.00 min. After 3.00 min, 4.50 g of Mg remained. Express the average rate as mol of Mg consumed per minute. I was taught how to use molarity but this question does not tell

    asked by Julia
  10. math

    Book 1 255 book 2 235 book 3 178 book 4 299 book 5 150 book 6 67 book 7 82 book 8 267 book 9 188 book 10 142 book 11 281 book 12 138 book 13 326 book 14 264 book 15 103 ^ number of pages What would be the best graph or display to represent your Home

    asked by :I
  11. Chemistry

    The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 24.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode. How would I go about this problem? I am extremely confused

    asked by Julia
  12. math

    i need your help guys #A fruit vendor bought 600 apples for $ 4800. He spent $ 400 on transportation. How much should he sell each to get a profit of $ 1000?

    asked by kelvin
  13. physics

    Two point charges of magnitude +3.0 nC and +2.0 nC respectively are placed 2.0cm apart. Calculate the resultant electric field strength at their midpont E= E1 + E2

    asked by ar
  14. Chemistry

    The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 24.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode. How would I go about this problem? I am extremely confused

    asked by Julia
  15. Chemistry

    Consider the reaction: 2CH4(g) + 3O2(g) + 2NH3(g) --> 2HCN(g) + 6H2O(g) If 203.5 g NH3 is reacted with excess CH4 and O2, what mass in grams of HCN can be produced?

    asked by D
  16. Language arts

    what is the preposition in this sentence after the movie we will grab a pizza to take home A.after B.will C.grab D.to i think it is B

    asked by Stella
  17. chemistry

    1. The first order rate constant for the reaction, SO2Cl2(g) → SO2(g) + Cl2(g), is 2.20 x 10-5 s-1 at 593 K. What percent of a sample of SO2Cl2 would be decomposed by heating at 593 K for (a) 1 hr, (b) 3 hr. How long will it take for half of the SO2Cl2

    asked by renee
  18. Science please help

    i am sorry to bother you Ms. Sue but i need to present your proposal of a device that minimizes heat transfer. can you please give a list of insulators

    asked by banna
  19. Chemistry

    The solubility of Agcl with solubility product 1.6 × 10^-10 in 0.1 M Nacl solution will be ?

    asked by Ananthi
  20. mathvariation 2(steve,reiny,reed) pls I need help!

    the force E needed to make a machine pull a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed for 30g load is 2N. Find the: A)law connecting the load and the

    asked by cynthia
  21. Elementary Statistics

    Ten horses are entered in a horse race. How many permutations of 1st, 2nd, and 3rd place winners are there?

    asked by Becca
  22. math URGENT HELPPPP!

    Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

    asked by katy
  23. algebra

    The coach of a soccer team is holding tryouts and can take only 3 more players for the team. There are 6 players trying out. How many different groups of 3 players could possibly be chosen?

    asked by lashaunda
  24. Math

    Suppose you have 5 marbles in a bag: 3 red and 2 black. If you reach into the bag without looking and randomly pick out two marbles, what is the probability that both marbles are red?

    asked by Beth
  25. Math

    A cashier has 25 coins consisting of nickels, dimes, and quarters with a value of $4.10. If the number of dimes is 1 more than twice the number of nickels, how many of each type of coin does he have?

    asked by Tay
  26. Physics

    What can be said about the electric force between two charged particles? a. it is repulsive for unlike charges. b. it varies as 1/r. c. it depends only on the magnitudes of the charges. d. it is much, much greater than the attractive gravitational force.

    asked by Destiny
  27. Physics

    Two particles are fixed on an x axis. Particle 1 of charge 70.5 μC is located at x = -28.5 cm; particle 2 of charge Q is located at x = 21.2 cm. Particle 3 of charge magnitude 37.4 μC is released from rest on the y axis at y = 28.5 cm. What is the value

    asked by A.toka
  28. math

    If two trapezoids have the same perimeter do they have the same area?

    asked by mary
  29. Math

    A theater has tickets for $6 for adults, $3.50 for students, and $2.50 for pre-school children. A total of 238 tickets were sold for one showing with a total revenue of $1142. If the number of adult tickets sold was 10 more than twice the number of student

    asked by Tay
  30. trigonometry

    If sinø=4/5 find the value of cosecø/1+cotø

    asked by ankita
  31. physics

    a block and tackle with a velocity ratio f 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate.if the effort is equal to 60N .Determine 1.)the distance moved by he effort 2.)the work done by the effort in lifting the load

    asked by tobiloba
  32. discrete math

    You have borrowed $8000 from the bank. Suppose you want to repay a fixed amount of money for each of the following n years (except possibly the last year), and the annual interest rate r does not change in these n years. For example, if r = 10% and you

    asked by akash
  33. math

    solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters after "t" seconds is given by the formula h=35t-5t^2 how long does it take to reach 50 meters? you should

    asked by Anonymous
  34. Physics

    Which of the followings is correct for waves? a. One wave can cancel another wave so that no amplitude remains at certain points. b. While you are at rest, a car moves toward you while it is making noise. The speed of this sound wave is greater than when

    asked by Destiny
  35. Math

    A circle with a 4-inch radius is centered at A, and a circle with a 9-inch radius is centered at B, where A and B are 13 inches apart. There is a segment that is tangent to the small circle at P and to the large circle at Q. It is a common external tangent

    asked by Matty
  36. Math

    Two litres of juice is poured into 10 litres of water. What fraction of the drink is juice?

    asked by Palesa
  37. Math

    The sum of digits of a three-digit number is 14, and the ten's digit of the number is one more than the unit's digit. If the digits were reversed in order, the new number is 198 more than the original. What is the original number?

    asked by Tay
  38. Math

    How many 250ml cups can I fill up if I have a 4 liter jar

    asked by Nicholas
  39. math

    Adrian has $12,000 invested in a savings account which pays 5%, a time deposit paying 7% and a bond that pays 10%. He has $1000 less invested in the bond than in his savings account, and he earned $860 in annual interest. How much money is in each account?

    asked by Tay
  40. Physics 1401

    A 30 N object I a hung from a scale and dunked in water (density of 1000 kg/m^3), the measurement on the scale is only 20 N. what is the density of the object? Answer is 3000 kg/m^3, can someone show me how? Would be very appreciated.

    asked by Amanda
  41. chemistry

    what volume of carbondioxide is produced when 10g of Hcl reacts completely with caco3 caco3+2HCl=cacl2+H2o+Co2 moles ofHCl=10/36.5=0.27 volume:volume 2HCl:CO2 2:1 24000*2:24000 480000:24000 2700:x x=1350cm3

    asked by mohammad
  42. mathvariation! Pls I need help! 2(steve,reiny,reed)pls

    the distance covered by a falling ball varies as the square of the time taken.if a ball falls through 1800m in 15seconds,calculate the distance when the time taken is 15seconds and the time taken for is distance of 648m.?

    asked by cynthia
  43. Probablity

    Having a hard time with this question: Help Please With Replacement: This is a multi-stage experiment. There are 7 colored cubes in a bag. The colors are purple, blue, red, orange, white, yellow, and green. This is a multi-stage experiment with dependent

    asked by Matthew
  44. Calculas

    Compute the absolute and relative errors in using c to approximate x. x=e; c=2.74

    asked by Jahaira
  45. Maths

    A father was three times as old as his son fifteen years ago and four times his sons age nineteen years ago. When was the father twice as old as the son?

    asked by Martin
  46. Math

    6 cd+2b+9(cd+b/3)=A(3cd+b) I'm really sorry this question seems really hard to me. But what I got as an answer is 6, ohh and I have another question. Can you use the distributive property on this problem? (Argh our class is getting ready for the PSAT!) And

    asked by Hatsune Miku
  47. history

    what was the relationship between politics and religion in medieval Europe.

    asked by Andrea
  48. Math

    Scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people who score between 363 and 541

    asked by Katelyn
  49. Physics 1401

    An ideal meter stick is balanced on a pencil which is at the 60 cm mark. A 6 gram mass sits at the 90 cm mark. What is the mass of the meter stick? Again, I have the answer and it is 18g. I have no clue where to even begin with this questions. Thank you in

    asked by Amanda
  50. Social Studies

    10. Arabia and Iraq are most affected by the scarcity (or lack of) which resource? Ok I have tried really hard to research this and maybe I'm thinking to hard but I came up with water or oil. _LOL_ and I have a huge headache...but I am not going to give

    asked by WOW
  51. algebra

    The volume V of a gas varies inversely as the pressure P on it. If the volume is 250 cm3 under a pressure of 35 kg/cm3, solve for the pressure applied to have a volume of 180 cm3. Be sure to define your variables, find your constant variable, construct

    asked by Anonymous
  52. Physics 1401

    An ideal meter stick is balanced on a pencil which is at the 60 cm mark. A 6 gram mass sits at the 90 cm mark. What is the mass of the meter stick? Again, I have the answer and it is 18g. I have no clue where to even begin with this questions. Thank you in

    asked by Amanda
  53. Math

    Cells in an embryo double every hour. If an embryo has 6 cells to begin with, write an expression for the number of cells after n hours

    asked by Leah
  54. Math

    Two competing construction companies summit the following bids: Bill Quik: $7,500 plus $15 per square foot of the building. Shut Bild: $10,000 plus $12.50 per square foot of the building. For what number of square feet of building will competing bids be

    asked by Tay
  55. Physic sucks 1401

    An Atwood's machine is built from m1=1kg and m2=2kg. The massless string is passed over a frictionless massless pulley. When the system is released from rest, what is the tension in the string? The answer is 68, this is for my finals review And my

    asked by Amanda
  56. Math

    I don't know how to make an equation for this? Vanilla cookies $5/ box Chocolate cookies $3/box Mint cookies $2/box Mary was selling girl guide cookies. She sold twice as many vanilla cookies as she did chocolate cookies. She sold 75 more boxes of mint

    asked by Peridot
  57. Probablity

    There is a bag with 200 cubes in it. Some of the cubes are red and some are black. You reach into the bag 20 times, each time picking up random cube, recording its color, and putting the cube back in the bag. You picked 7 black cubes and 13 red cubes. With

    asked by Matthew
  58. discrete math

    Q: Count the number of passwords with following constraints. Assuming digits = {0, 1, …..9}, letters = {a, b, ….. y, z} (a) 5 characters which are digits or letters. (b) 4 characters which are digits or letters, with at least 1 digit. (c) 4 characters

    asked by akash
  59. Math

    There were d passengers in the train. 15% of all of them went in the first car, 20% went in the second car. How many passengers were in the rest of the train?

    asked by Bob
  60. maths

    tanks reiny!!! I appreciate!!!

    asked by cynthia
  61. Math

    This 3 dimensional shape has 6 faces that are triangles as well as one base that is a polygon. What is this shape?

    asked by Matthew
  62. algebra

    A fish can swim 45 miles downriver in the same amount of time that it can swim 27 miles upriver. Solve for the speed of the current if the speed of the fish is 12 mph in still water. Show all of your work and explain your solution.

    asked by Anonymous
  63. Advanced functions

    Determine the equation for the vertical asymptotes, if they exist, for each function. Then, state the domain. f(x)= -1/x^2-7x+6

    asked by Zara
  64. Math

    Cheryl has $2000 less invested in a money market account paying 10% than in a bond paying 7%. If she received $820 in interest for a year how much did she have in the two accounts?

    asked by Tay
  65. discrete math

    There are n identical balls and m different bins. Let Bn,m be the total number of way to put n balls in m bins. (a) What are B1,1, B2,1, B1,2, B2,2, B3,2? (b) Express Bn,m in terms of Bk;m-1, for k = 0,….. n.

    asked by akash
  66. History

    Compare and contrast Queen Eleanor's and Louis' relationships with the church.

    asked by Lily@34
  67. Mechanics

    The force Fa=(5i+6j+1k) is applied on a material point while it is shifted by 50m in Oxy plane along a direction 20o CCW versus Ox axis. Find the work done by force on the particle during this shift. The answer should be 337.5J What I did: I found the

    asked by Dave
  68. maths

    Simplify 4+3(7+4*2)-1000

    asked by maniru aminu
  69. GGHSS COTTON HILL Maths

    consider the arithmetic sequence 53,47,41 than what is the common difference and the algebraic expession of the given sequence

    asked by Aiswarya
  70. Math

    A 500 ml bag of penicillin G contains 250,000 uniys. The patient received 300ml. How many units of penicillin G did the patient receive?

    asked by Michele
  71. Ramos

    Travis bank charges two dollars or withdrawls at nonbank ATMs and a fee of $2.50 per month for a debit card.last month she paid $10.50 in ATM and debit card fees. How many nonbank withdrawls did she make

    asked by Ava
  72. Chemistry

    Show the steps needed to determine the energy in a red photon of 7.0 x 10^2 nm. E= h * (c/λ) 6.62e-34 * (3e8/2e-7) 2.837e-19 J? Is this correct?

    asked by Anonymous
  73. calculus

    Let y = sinx + ztanx,where z is a function of x. If (dy/dx)= z+ cosx, show that (d^2y/dx^2) =-y. I really have no idea how to do this. Please show me

    asked by Mat
  74. Probablity

    Having a hard time with this question: Help Please This is a multi-stage experiment. There are 7 colored cubes in a bag. The colors are purple, blue, red, orange, white, yellow, and green. This is a multi-stage experiment with dependent events. Determine

    asked by Matthew
  75. Geometry Proofs

    Trying to solve a proof. Triangle ABC. D is a point on side AC and E is a point on side BC. There is a line from Angle B to Point D and a line from Angle A to Point E. My Givens are AD = BE and BE>AE. I need to prove BC>AC. This is for my 7th grade

    asked by Scott
  76. variation! Steve pls check my solution!!!

    what if d maths is done like dx? L=km/h When L=40,m=175,h=286, (skipping the units) 40=k(175)/ 286 K=286(40)/175=2288/35 L=2288/35=250/50 L=114400/8750 L =13.1m

    asked by cynthia
  77. maths

    solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters. how long does it take to reach 50 meters? you should have two answers, explain the meaning of the two

    asked by Anonymous
  78. sociology

    identify and describe the methods employed in four types of sociological research design

    asked by lola
  79. technical mathematics

    express 6,850 centimeters (cm) as meters (m)

    asked by adams
  80. cynthiavariation 2(steve,reiny,reed)pls I need help!

    yea! D question was d one u asked me 2 put d first height!

    asked by cynthia
  81. English

    Would I need to put (Emerson) for each one of the quotes in this sentence? And is the commas placed correctly? This is for an reflection essay and I have already mentioned the title of where I got these quotes from before this sentence and I am only

    asked by Riley
  82. advanced functions

    Solve algebraically: 4/2x-3 < 1/x+4

    asked by Zara
  83. math

    Find the ratio of LCM to GCF of 9,18 and 52 #anyone to help me please

    asked by kelvin
  84. discrete math

    Q: Consider a digital circuit that reads an n-bit input string and writes a 1bit output. Two circuits are considered different if they have a different output for some input string, otherwise they are considered the same (i.e. two circuits are considered

    asked by akash
  85. English

    Does it make sense? Scrambled out of the car indicates that the writer was fascinated and curious to see a sloth making it's way down the tree. He couldn't resist the oppoturnity of seeing a sloth.

    asked by help
  86. sociology

    discuss the sociology of deviance and compare and constract the labeling theory of deviance with the functionalist approach to deviance

    asked by lola
  87. physic

    if the length of wire is incrase by 20% then?what is the % incrase in resistance

    asked by deepak
  88. mathvariation 2(steve,reiny,reed)pls I need help!

    pls steve I dnt understand! Explain how d alphabets? Wat are they representing?

    asked by cynthia
  89. English

    74 For her English class, Jana is brainstorming for a paper about Shakespeare plays. Use her chart to answer the question below. Shakespeare’s Plays Actors a. no women b. used many props Globe Theatre c. built by Shakespeare’s acting company d. rebuilt

    asked by cool kid
  90. Math

    I don't understand how to get equation for this Annie was selling girl guide cookies she sold twice as many vanilla cookies as she did chocolate. She sold 75 more boxes of mint cookies than she did chocolate. Total sale of cookies = 675 how many boxes of

    asked by Mohammad
  91. math

    The value of [cosx, sinx]• [cos(a + x), sin( a + x)] does depend on the value of a, but does not depend on the value of x. Explain why.

    asked by HELP!!!!!!!!!!!!!!
  92. math

    1A56B is a five digit number. When 1A56B is divided by 36 the remainder is 23. How many possible value can A take? #anyone to help me out

    asked by kelvin
  93. Science

    Can 8.9×10-19 be given to a conductor?

    asked by Physics
  94. Algebra

    2x^2-5x-12/10x+15

    asked by Anonymous