Questions Asked on
November 14, 2013

  1. Algebra help PLEASE? first and ONLY question

    Which of the images above represents a proof pf the Pythagorean Theorem? Explain your choice, and then explain how the figure proves the PT.

    asked by KurtCornell
  2. Math Statistics

    A company sells cans of chicken soup that that are advertised to contain 20 oz. However due to variations in the manufacturing process, the volume of soup in the cans is, in fact, Normally distributed with a mean of 20.1 oz and a standard deviation of 0.4

    asked by Steven
  3. accounting

    Pattillo Industries makes a product that sells for $25 a unit. The product has a $5 per unit variable cost and total fixed costs of $9,000. At budgeted sales of 1,000 units, the margin of safety percentage is 45%, 55%, 64%, none of these

    asked by Rudy
  4. Chemistry

    16.3L N2 at 25 degrees Celsius and 125 kPa and 41.9L O2 at 25 degrees Celsius and 125 kPa were transferred to a tank with a volume of 5.25L. What is the total pressure at 55 degrees Celsius?

    asked by Matt
  5. History

    When did construction of the Great Wall of China end? Please give me a website to refer to.

    asked by Anonymous
  6. Integral Help

    I need to find the integral of (sin x)/ cos^3 x I let u= cos x, then got -du= sin x (Is this right correct?) I then rewrote the integral as the integral of -du/ u^3 and then rewrote that as the integral of - du(u^-3). For this part, I wasn't sure how to

    asked by Anonymous
  7. statistics

    In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal distribution to estimate the requested probabilities. More than a decade ago, high levels of lead in the blood put 89% of children

    asked by Danielle
  8. physics

    With what velocity should the ball be kicked (magnitude in m/s and direction) for an ideal kick off? 4.8 second hang time and horizontal displacement of 60 yards and how high in meters should the ball be expected to go? Thank you

    asked by Steve
  9. PHYSICS

    To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. The belt is a 200-turn coil. When the patient inhales, the area encircled by the coil increases by 45.0 cm2. The magnitude of the Earth's magnetic field is

    asked by MR. GEE
  10. Functions

    Solve sin^2x - 2sinx - 3 = 0 on the interval xE [0, 2pie]

    asked by SHINee
  11. ASHFORD

    The idea of Gardener’s theory of multiple intelligences suggests that there are specific intelligences that are inherent in all individuals. The author, however, suggests that a preferred style may not necessarily be the best way an individual learns.

    asked by QUEEN
  12. Social Studies

    WWI: Why would the Canadiens( Francophone) and the Maritime provinces be less interested in going to war in Europe than those Canadians of British heritage?

    asked by Lisa
  13. math

    an average sized female spider and a large spider can lay a total of 2100 eggs at one time . The large spider lays 20 times the number of eggs as the average spider. How many eggs does the average spzied spider lay?

    asked by CJ
  14. Pipeline design

    Sketch a preliminary layout for the following heat exchanger systems. On the layout sketch indicate pipe work manifolds, access platforms, access for construction, operations and maintenance. In your answer we are looking for thought into the relative

    asked by Tony
  15. physics

    Two spherical conducting wires A and B are connected to the same potential difference. Wire A is three times as long as wire B, with a radius double that of wire B and resistivity doubles that of wire B. What is the ratio power delivered to wire A to the

    asked by Anonymous
  16. Physics

    A 55.0kg cheerleader uses an oil-filled hydraulic lift to hold four 130kg football players at a height of 1.20m. If her piston is 19.0cm in diameter, what is the diameter of the football players' piston?

    asked by Joey
  17. PHYSICS HELP

    A satellite of mass m is orbiting the earth, mass M , in a circular orbit of radius ra . Unfortunately a piece of space debris left by a passing rocket lies directly in the satellite's path. The piece of debris has the same mass m as the satellite. The

    asked by Anonymous
  18. Solar Energy

    Consider a crystalline PV module with the following output parameters mentioned at STC (Standard Testing Condition) conditions by the manufacturer. Pmax = 250W Voc = 50V Isc = 6A NOCT = 40°C Temperature coefficient of power = -1W/°C a) If the ambient

    asked by Anonymous
  19. Solar Energy

    Consider a PV module with the following parameters as measured at STC (Standard Testing Conditions): Voc = 55 V; Isc = 5 A; Impp = 4.7 A; Fill Factor = FF = 75% ; Efficiency = 19.75%. Suppose that under normal operation at STC conditions, the module is not

    asked by Anonymous
  20. Solar Energy

    a) Consider a lead acid battery with 100Ah capacity and a rated voltage of 24V. What is the total capacity of energy in Watt-hours that can be stored in the battery? b) Assume that the battery is completely empty. The battery is now charged at a C-rate of

    asked by Anonymous
  21. Solar Energy

    Which of the following variables does NOT affect the economic payback period of a PV system? 1)Insolation received by the PV system 2)Subsidies and feed-in tariffs 3)Cost of electricity 4)Overall lifetime of the PV system

    asked by Anonymous
  22. Solar Energy

    Consider a 250 Wp rated crystalline silicon PV module. It results from a manufacturing process that consumes 8kWh/Wp of PV module. a) What is the total energy consumed (in kWh) during the production of the module? Assume that the PV module is used in a

    asked by Anonymous
  23. chemistry

    What is formed when zinc carbonate reacts with concentrated hydrochloric acid?

    asked by hao
  24. Physics Classical Mechanics

    A Yo-Yo of mass m has an axle of radius b and a spool of radius R . Its moment of inertia about the center can be taken to be I=(1/2)mR2 and the thickness of the string can be neglected. The Yo-Yo is released from rest. You will need to assume that the

    asked by Anonymous
  25. Physics Classical Mechanics

    A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of

    asked by Anonymous
  26. cinfidentiality in allied health

    the technology that identifies people through bodily characteristics is known as a.genetic testing b.psychometrics latent identification biometrics my answer is d

    asked by susue
  27. confidentiality in allied health

    when must a notice to use and disclosure be provided a.within 10 days after treatment b.before treatment is terminated c.upon request of the patient d.no later than the date of the first service delivery my answer is d

    asked by susue
  28. Music

    What could be done to minimize the commercialism in today’s music scene?

    asked by Unknown
  29. Chemistry

    Your space ship has docked at a space station above Mars. The temperature inside the space station is 24oC at a pressure of 745mmHg. A balloon with a volume of 425mL drifts into the airlock where the temperature is -95oC and the pressure is 0.115 atm. What

    asked by Marissa
  30. math

    The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e^−0.21 a where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 11.35 psi, what is its altitude?

    asked by Anonymous
  31. Algebra 2 Trig - Probability Question

    help solving a probability problem: probability that a person taking a survey is male "given" that he preferred a European automobile if 112 males prefer european autos out of 188, and 216 of a total of 452 individuals were surveyed were male. Additional

    asked by Mary
  32. Pre-Calculus

    Find the slope of the tangent line to the curve √(1x+2y) + √(1xy) = 8.24 at the point (2,8)? I know you have to use implicit differentiation, but the radicals keep making me mess up algebraically. Is the changing the radicals to exponents the fastest

    asked by Ann
  33. Physics Classical Mechanics`

    A wheel in the shape of a uniform disk of radius R and mass mp is mounted on a frictionless horizontal axis. The wheel has moment of inertia about the center of mass Icm=(1/2)mpR2 . A massless cord is wrapped around the wheel and one end of the cord is

    asked by Anonymous
  34. chemistry

    Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.Please help!!!!!

    asked by mona
  35. Physics Classical Mechanics

    A hollow cylinder of outer radius R and mass M with moment of inertia about the center of mass Icm=MR2 starts from rest and moves down an incline tilted at an angle θ from the horizontal. The center of mass of the cylinder has dropped a vertical distance

    asked by Anonymous
  36. Physics Classical Mechanics

    A satellite of mass m is orbiting the earth, mass M , in a circular orbit of radius ra . Unfortunately a piece of space debris left by a passing rocket lies directly in the satellite's path. The piece of debris has the same mass m as the satellite. The

    asked by Anonymous
  37. Physics Classical Mechanics

    A gyroscope consists of a uniform disc of mass radius M= 2 kg and radius R= 0.2 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see

    asked by Anonymous
  38. Finite

    An urn contains 5 white balls and 4 black balls. If 3 balls are randomly selected ( at once, without replacement ), what is the probability that at least 1 ball is black? Give answer as a decimal number with three correct decimal places.

    asked by zach
  39. Solar Energy

    Family Cartman has a small house in the country side which is not connected to the grid. The place enjoys 4 equivalent sun hours. Therefore, Mr Cartman has decided to install an off-grid PV system in the house to supply the required electicity in the

    asked by Anonymous
  40. Chemistry

    What fraction of glutamate is charged in milk

    asked by Vinaya
  41. Math--PLEASE HELP!!!

    Let's begin with a rather straightforward lottery in which players select four digits. The winning number is commonly selected in the following fashion: 10 Ping Pong balls (each with a digit 0 through 9 written on it) are placed in a hopper. One Ping Pong

    asked by Samantha
  42. Intro to computers

    A user calls your help desk to report that the files on her USB stick do not have any permissions associated with them and therefore aren't secure. Why is this? A The USB stick is formatted with FAT 32 b The USB stick is formatted with FAT 64 c The USB

    asked by Deb
  43. biology

    can you give examples of analogous structures????? please i have tried about 4 differet websites and no one has helped

    asked by raylynn
  44. physics

    A 1700 kg car moving south at 19.5 m/s collides with a 2050 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.16 m/s to the north. Find the velocity of the 2050 kg car before the collision. m/s to the

    asked by Maddie
  45. pre-algebra

    1.write the fraction 5/6 as a percent. Round to the nearest hundredth of a percent where necessary. 33.33% 66.67% 83.33% 1.20% 2. Chris and five of his friends go out to dinner. The total bill comes to $124.29. they decide to leave a 20% tip. Each person

    asked by kelsey
  46. science

    What can be inferred after performing the experiments in the Atomic Theory lab?

    asked by fred
  47. physics

    The position of a particle moving along the x axis is given by x=3.0t^2 - 1.0t^3 , where x is in meters and t in seconds. What is the position of the particle when it achieves its maximum speed in the positive x direction

    asked by olivia
  48. biology

    Given three restriction enzymes, cuts and base pairs on the plasmid map. How do you apply this information to a autoradiogram of sequencing gel? Also, include the band locations.

    asked by Jets
  49. Statistics

    In the following two questions, identify which choices would be considered inferential statistics. 1. of 500 randomly selected people in new york city, 210 people had O+ blood. a) "42 percent of the people in NYC have O+ blood" Is the statement descriptive

    asked by Kitty
  50. Statistics

    In the following two questions, identify which choices would be considered inferential statistics and which would be considered inferential statistics. 1. of 500 randomly selected people in new york city, 210 people had O+ blood. a) "42 percent of the

    asked by Kitty
  51. math

    the length of the hypotenuse of a right triangle is 15 ft. the length of one legs is 9 ft. find the length of the other leg. a) 6 ft b) 21 ft c) 12 ft d) 18 ft

    asked by victoria
  52. science

    if a number is not an irrational number then it is s) a rational number b) a integer c) a whole number

    asked by victoria
  53. Computer Programming

    Implement the classic “Rock, Paper, and Scissors game” using following methods: Headers of the methods are shown public static void printMenu( ) It is a void method –It uses no parameters --It is called to display choices and code (1 for Rock, 2 for

    asked by Nathan
  54. Science

    How do I find a research question, sample size method of analysis , major findings in an article titled: Ethical challenges in the design and conduct of locally relevant international health research

    asked by Dammy
  55. Math

    3x+13=5(x-1)

    asked by LIzzie
  56. physics

    You walk 51 m to the north, then turn 30° to your right and walk another 45 m. How far are you from where you originally started?

    asked by D
  57. Statistics

    Which of the following graphs would be best to use to display the number of discharges by medical service for the past year? Line or bar graph?

    asked by Anonymous
  58. Media (Ms.Sue or Writeteacher)

    Who are the stakeholders in media? once you have helped me with this question, I will post my answer. Please check it thanks

    asked by Anonymous
  59. math

    The official ratio of width to length for the U.S. flag is 10 to 19. If a flag is 38 inches wide, how long should it be?

    asked by LIzzie
  60. Probability

    help solving a probability problem: probability that a person taking a survey is male "given" that he preferred a European automobile if 112 males prefer european autos out of 188, and 216 of a total of 452 individuals were surveyed were male. Additional

    asked by Mary
  61. KINDERGARTEN

    HOMEWORK HAVE CHILDREN WRITE A ROW OF EACH LETTER AND THEN WRITE THE WORDS

    asked by MIMI
  62. Math

    1. You need $200,000 to retire in 10 years. You can invest monthly amounts at 5% APR at work. How much should you contribute each month? 2. A friend creates an IRA with an APR of 6.25%. She starts at age 25 and deposits $50 per month. a) How much will her

    asked by Kim
  63. Earth space science

    I need help with this. the map doesnt show anything and idk how to post the map on here... Match the cities A,B,C, and D with the weather description of the surface model (To the right of each letter) a. city A b. City B c. City C d. City D A. Pressure of

    asked by Selena
  64. physics

    A charged particle of mass 8.39×10−4 kg starts from rest and accelerates through a potential difference of +25,000 V to reach a speed of 1170 m/s. What is the charge on this particle?

    asked by linda
  65. Algebra 1 ( Inequalities and their Graphs)

    Come up with 2 real world examples of situations that use function rules. Think about your daily life, your home, or the community you live in for ideas. . Can i get an example because i don't know how to do this..

    asked by Gabby
  66. Geometry

    If you have four lines how can you position them so that three are concurrent with each other and two are parallel to each other?

    asked by Samantha
  67. US History

    What does Patrick Henry mean when he writes "Shall we acquire the means of effectual resistance, by lying supinely on our backs..."

    asked by Anna
  68. physics

    What net torque is required to give a uniform 12-kg solid ball with a radius of 0.22m an angular acceleration of 12rad/s2 ?

    asked by help!
  69. Stats

    According to a Louis Harris poll, 63% of male drivers always use seat belts. A recent sample of 900 male drivers showed that 60% of them always use seat belts. Test at the 0.01 lovel of significance if the proportion of male drivers who always use seat

    asked by Justin
  70. English

    If I use "anything," should I pair it with "it" or "them?" For example, "if I wanted anything, I could get it/them there."

    asked by Anonymous
  71. PHYSICS (HELP)

    A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.1 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see

    asked by Anonymous
  72. Math

    You pull into a gas station where the sign says the gas costs $3.679. To fill up your tank you need 20 1/2 gallons of gas. You plan to use your credit card to pay. Rounded to the nearest cent, what will the charge be on your credit card? $75

    asked by Alan
  73. Chemisty

    Consider a 1.50 L aqueous solution of 3.75 M NH3, where 17.5 g of NH4Cl are dissolved. To this solution, 5.00 g of MgCl2 are added. a. What is [OH-] before MgCl2 is added? b. Will a precipitate form? c. What is [Mg2+] after equilibrium is established? I

    asked by Olivia
  74. math

    This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

    asked by Jamal
  75. Math

    You have a table in your living room with a round top that has a diameter of 2 1/2 feet. You would like to put a piece of glass over the top of the table to protect the surface. What is the area of the table top? (Use 3.14 for the value of pi). Write your

    asked by Alan
  76. Physics

    A liquid of density 1.23 × 103 kg/m3 flows steadily through a pipe of varying diameter and height. At location 1 along the pipe the flow speed is 9.23 m/s and the pipe diameter is 1.07 × 101 cm. At location 2 the pipe diameter is 1.71 × 101 cm. At

    asked by Ashley
  77. Math

    Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%?

    asked by Tracy
  78. math

    Which best describes a polynomial? A) a decimal that is non-terminating or non-repeating B) a close-planed figure formed by three or more line segments C)a number greater than one that has exactly two different factors D) an algebraic expression containing

    asked by Elle
  79. Trigonometry - Identities

    If tan 2x = - 24/7, where 90 degrees < x < 180 degrees, then find the value of sin x+ cos x. I applied various identities and tried manipulating the problem to get sin x + cos x = sin(arctan(-24/7)/2) + cos(arctan(-24/7)/2) I also played around with the

    asked by Sam
  80. Math

    My second grader brought home this math problem for which I can find no solution. The sum of two numbers is 21. One number is two more than the other. What are the two numbers?

    asked by Maria
  81. math

    what is the equation of the horizontal asymtpote of f(x)=-4(5^(x-3))+1

    asked by 3
  82. Math

    Is 10.512 * 10^3 written in proper scientific notation? If not rewrite the number in proper scientific notation.

    asked by Alan
  83. math

    what is the equation of the vertical asymtpote of f(x)=-4(5^(x-3))+1

    asked by 3
  84. Law

    1. Of the following scenarios, which one would be classified as robbery? A. A suspect enters a bank and hands the teller a threatening note demanding money. The teller gives the suspect $2,000, and the suspect walks from the bank. B. A suspect enters a

    asked by Amy
  85. Social Studies

    paragraph about places kids would like to visit.

    asked by Jhakeria
  86. chemistry

    how do we determine Cmolar ,metal from Cs,metal

    asked by Anonymous
  87. LAW

    When kidnappers contact a victim's family with instructions about delivering the ransom, investigators should: A. help the family decide who will make the ransom delivery. B. select the officer who most resembles the victim's family and send them to make

    asked by Amy
  88. Physics

    Police find skid marks 180 meters long on a highway where a car made an emergency stop. Assuming that the deceleration was a = 10 m/s¶ (about the maximum for dry pavement), how fast was the car traveling before the brakes were applied?

    asked by lee
  89. accounting

    How would you summarize Apple’s cash flow position and what does this statement tell you about where the money is coming from and where it’s going? What should Apple do to improve its cash position and why?

    asked by quita
  90. Physics

    A car traveling at a velocity of 24 m/s is accelerated uniformly at a rate of 2 m/s¶ for 8 seconds. What is the final velocity of the car?

    asked by lee
  91. math

    Which one(s) of these twelve brands would be considered outliers, if there are indeed any at all? How extreme does something have to be considered an outlier? Brand,Strawberry,Vanilla 1,140,140 2,210,230 3,200,170 4,200,180 5,110,100 6,180,180 7,210,150

    asked by valerie
  92. statistics

    David wants to rent an unfurnished apartment for next semester. He took a random sample of 9 apartments adversised in the local Halifax paper, and recorded the rental rates. The rents (in $ per month) were: 500 650 600 505 450 550 515 495 640 a) Find a 90%

    asked by Tiffany
  93. Physics

    1. A gold atom has a mass of 3.287 • 10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646 • 10-27 kg. In this process, the gold atom is transformed into an iridium isotope. The alpha particle has a speed of 3.40 • 106 m/s. A.

    asked by Riley
  94. physics

    A 2.20kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 21.3N is required to hold the mass at rest when it is pulled 0.190m from its equilibrium position (the origin of the x axis). The mass is now released

    asked by nicole
  95. Math

    I have $48. I spend $3 each day. I need to write an equation that represents the amount of money I have left in terms of the number of days since I started spending the money, and tell what each variable in the question represents.

    asked by Arthur
  96. math

    round 749 to the nearest hundred

    asked by Raquel
  97. 5th grade math

    how would you mentally figure out a percent discount without a calculator? (:

    asked by Natalina
  98. math

    why do you think there are differences in how people view cultures

    asked by anonymous
  99. Math

    There are some caps in a box. 1/6 are red, 1/3 are blue, and 3/7 of the remainder are green. If there are 27 green caps, how many caps are there all together?

    asked by Drew
  100. social studies

    why do you think there are differences in how people view cultures

    asked by anonymous
  101. math

    The length of a rectangle is 2 inches longer than the width. The area of the rectangle is 56 in^2. Find the dimensions. Also: The length of a rectangle is 3 ft more than the width. The area of the rectangle is 28 ft^2. Find the dimensions.

    asked by Shanice M.
  102. math

    There are x students in Mrs. Schwartz's third-grade class. One less than half the students have blue eyes. Six fewer children have green eyes than have blue eyes. The rest of the students have brown eyes. How many students have brown eyes? a. 7 b. 8 c.

    asked by Tomas
  103. Calculus Inegral

    integral of x/lnx

    asked by Physics
  104. math

    Scott, Mike, and Holly shared an order of French fries. Scott ate x fries. Mike ate one more than twice the amount of fries that Scott ate. Holly ate 5 fewer fries than Scott did. If there were 6 fries left, how many fries were in the order? a. x-5 b. x c.

    asked by Tomas
  105. math

    A relay with n laps was run by 4 people. The first runner ran half the laps. The second runner ran half the amount of laps the first runner ran. The third runner ran half the amount of laps the second runner ran. The remaining laps were completed by the

    asked by Tomas
  106. Physics

    A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball

    asked by Leslie
  107. English

    Help please What change if any? Michael phelps is one of the best know athletes who endorse products in television commercials Is it c? a sentence is correct b change endorse to endorsing c change endorse to endorses

    asked by Asia
  108. Social Studies (History)

    What does it mean when it says, "Discuss how the membership within a union affects your views of that union."?

    asked by Nicole
  109. rates

    a certain kind of lumber costs $3.00 for 8ft . at this rate how much does 14ft cost

    asked by rian
  110. Physics Help!! I'm so confused!!!

    A fire hose sprays 450 liters of water a minute onto a fire with a velocity of 17.0 m/s. Water has a density of 1 kg/liter. What is the average force acting on the fireman holding the hose due to the water? PLEASE EXPLAIN.

    asked by Samantha
  111. Math

    On a blueprint/ the distance between the family room and kitchen is 3 inches. If 1/4 inch represents 1 foot on the blueprint, what is the actual distance from the family room to the kitchen? How do I solve it?

    asked by Jerald
  112. Physics

    A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 300-N force is instead pulling the block at

    asked by DROSP
  113. Math

    Perform the indicated operation and simplify. 1. 1/4 + 1/3 = 2/3 2. 4/7 - 5/6 = 1/6 3. 3/5 * -4/7 = -12/35 4. 10/11 divided by 2/3 = 15/11

    asked by Alan
  114. CHEMISTRY

    I know I posted this question before, but can you clarify it?? MY QUESTION IS AFTER YOU SWITCHED THE DELTA H1 THE CHANGE IN THE ENTHALPY IS NEGATIVE.... BUT THAT DOES NOT MAKE SENSE BECAUSE THE CHANGE IN ENTHALPY OF THE ORIGINAL DELTA H1 IS

    asked by Anonymous
  115. Math

    To get a job as a receptionist you have to be able to type 60 words per minute. Trevor wanted to work as a receptionist for the summer so he was working on building up his typing speed. He made the following table to track his progress. Week 0 20 words/min

    asked by Jerald
  116. 4th grade math

    laura is 2 inches taller than rebecca. maxine is 4 inches taller than rebecca. the total height for the three girls is 150 inches. how tall is rebecca

    asked by mythreyee
  117. Science

    Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates d. DNA sequences Which of the

    asked by Anonymous
  118. 4th grade math

    solve the equation. check the solution 1. a divided by 7= 20 2. d divided by 2=8 3. c divided by 3=15

    asked by mythreyee
  119. Math-Probability

    Suppose an urn contains 8 red,5 white and 7 blue marbles.If 3 marbles are drawn at random from the urn with replacement,what is the probability that three marbles are the same color?Give answer in a reduced fraction.

    asked by Melina
  120. Math

    Your favorite chocolate chip cookie recipe makes 4 dozen cookies. Among the other ingredients, the recipe calls for > 1 cup of butter > 2 tsp vanilla extract > 3 cups of flour > 1/2 tsp salt You are asked to make 6 dozen cookies for a party. How much

    asked by Alan
  121. Math

    To get a job as a receptionist you have to be able to type 60 words per minute. Trevor wanted to work as a receptionist for the summer so he was working on building up his typing speed. He made the following table to track his progress. Week 0 20 words/min

    asked by Jerald
  122. Math-Probability

    Please explain how to get the answer.I have now idea. 1.If you roll two fair dice,one red and one green,what is the probability of getting a 2 on the red die and a 3 on the green die? Give answer in a reduced fraction. 2.If you roll two fair dice,one red

    asked by Kaylee
  123. home work

    what does mrs wishy - washy need to give the animals a bath ?

    asked by linda
  124. English

    Which word fits? Have officials chose/chosen the city for the next Olympics? The Greek gods and goddesses drank/drunk nectar.

    asked by Kristen
  125. Math

    A projectile is launched from a cannon that sits 4 feet off the ground at an initial velocity of 120 feet/sec. Find the impact velocity.

    asked by Kristen
  126. Math

    Robert ate 3 pieces of a pizza and then felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into ?

    asked by Pietro
  127. rates

    a homing pigeon flies 180km in 3hours . at this average , how far could the pigeon travel in 4 hour

    asked by rian
  128. math

    A circular swimming pool has radius of 15 feet. The family that owns the pool wants to erect a circular fence that is 5 feet away from the pool. Which is the closest to the circumference of the fence they will need? A. 94.2 ft B. 125.6 ft C. 157 ft D.

    asked by Gabriella
  129. American History

    How many words are in the U.S. constitution. A. 17,000 B. 30,000 C. 7,000 The Answer is C

    asked by Bianca
  130. English

    Is this sentence correct? My family (my mom, dad, and I) was going on a trip. I think it is correct, because family is singular?

    asked by Anonymous
  131. Chemistry

    I know I posted this question before, but can you clarify it?? MY QUESTION IS AFTER YOU SWITCHED THE DELTA H1 THE CHANGE IN THE ENTHALPY IS NEGATIVE.... BUT THAT DOES NOT MAKE SENSE BECAUSE THE CHANGE IN ENTHALPY OF THE ORIGINAL DELTA H1 IS

    asked by Anonymous
  132. Math

    1. What are the steps to solve this problem? 0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form.

    asked by anonymous
  133. rates

    a bicyclist travels for 2h at an average speed of 12km/h. how far does the bicyclist travel ? at this speed how long will it take the bicyclist to at 54km?

    asked by rian
  134. chemistry

    which of the following alkane names is correct? a)2-methyl-3-propylhexane b)1-methylnonane c)1,2-dimethylhexane d)4,5-dimethylpentane e)all of the above names are correct

    asked by lima
  135. math

    The parking cost at a garage is c=1.3(h-1) , where h is the number of hours you park and C is the cost in dollars. When is the cost of parking $10

    asked by sharon
  136. Language Arts

    8th grade language arts help. Please I need help with this I don't understand these questions. Can you please explain these concepts to me and let me know if my answer is correct? Identify the italicized word or words in each sentence. The ITALICIZED words

    asked by unknown111
  137. math

    The distance d, in miles, a small plane is from its final destination is given by d(t)=250-100t, where t is the time, in hours, remaining for the flight. Find and discuss the meaning of the intercepts of the graph of the function.

    asked by sharon Q
  138. Math

    Three friends go to their favorite seafood restaurant for dinner. They decide to order a crab cake appetizer. When it arrives there are only 2 crab cakes. What fraction of a crab cake will each friend get to eat? 3/2 Write the fraction as a decimal rounded

    asked by Alan
  139. Math help please

    1. Each time a touchdown is scored in a football game, 6 points are added to the score of the scoring team. A team already has 12 points. What rule represents the number of points as an arithmetic sequence when n is the number of touchdowns scored? A(n) =

    asked by Charlotte
  140. math

    Please I need help: I need to figure out the procedure to this question: Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%? How do I figure this out? Thank you very much,

    asked by Tracy
  141. Math

    The perimeter of a triangle Abc is 28 inches . Side Ab is 6 inches long and side BC is 8 inches long. find the length of side AC. Thank you.

    asked by Sky
  142. american history

    The federalist papers______________ A. Were written to persuade the public to support ratification of the Constitution. B. were an attack against the Framers and supported continuation of the Articles of Confederation. C. were written by three of the

    asked by Bianca
  143. math

    31divided by 5,087

    asked by michelle
  144. physics

    A 160 kg child jumps at 7 m/s into a boat floating a rest. After the jump, they both move at 3 m/s forward. Find the boat's mass.

    asked by John
  145. math

    Six people enter a dart throwing tournament in which each person must play each of the others in the tournament exactly once. Determine the total number of games that will be played.

    asked by junie w.
  146. Physics

    After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/5 their initial speed. Find the angle between the initial velocities of the objects.

    asked by Zaira
  147. Spanish

    Are my answers correct? If I am wrong please don't give me the answer. Just ask me to try again. My choice marked by *** 1. Yo ______ en Chile y él ______ en Argentina. ***estoy . . . está estamos . . . estoy está . . . está estoy . . . están 2.

    asked by Mark
  148. Chemistry

    Benzene (C6H6) and toluene (C5H5CH3) form nearly ideal solutions. At 20°C the vapor pressure of benzene is 74.7 Torr and that of toluene is 22.3 Torr. a) Find the equilibrium partial pressures above a solution of 100.0 g benzene and 100.0 g toluene. b)

    asked by Chris
  149. Chemistry

    A solution is made by adding 0.100 mole of ethyl ether to 0.500 mole of ethyl alcohol. If the vapor pressures of ethyl ether and ethyl alcohol at 20 oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20 oC (assuming ideal

    asked by Chris
  150. Chemistry, Science

    How many Cl- ions are present in 2.35 mol of CaCl2 and please show steps ! Need help so I can study for a huge test tomorrow

    asked by Danielle
  151. Government

    name three roles that interest groups play in American electionsl

    asked by Coco
  152. statistics

    Calculate and interpret a 95% confidence interval for the mean bp in the pop of ALL anabolic-steroid using athletes: random sample of 9 athletes resulting in a sd of 207.8, and 109 respectively. When random sample is less than 30, don't I find a t score?

    asked by mel
  153. Chemistry

    CONTINUE>>>>>>>>>>> The enthalpy changes for two different hydrogenation reactions of C2H2 are: C2H2+H2---->C2H4 Delta H 1 (there is a degree sign....standard enthalpy of formation??) *****WAIT A SECOND, IF I USE THE HEAT OF FORMATION VALUES TO CALCULATE

    asked by Anonymous
  154. Physics

    The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.

    asked by Vinny
  155. Physics

    The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.

    asked by Vinny
  156. Physics

    The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.

    asked by Vinny
  157. Physics

    A stone is aimed at a cliff of height h with an initial speed of v = 56.0 m/s directed 65.0° above the horizontal, as shown in the Figure below by the arrow. The stone strikes at A, 9.20 s after launching. What is the height of the cliff?

    asked by steeve
  158. interest math

    doris browning deposited $8000 into a savings account paying 5.25% interest. how long will it take for her investment to grow to $10,100. The answer i got was 4yr 11mo 30 days but that is wrong someone please help

    asked by lynda
  159. interest math

    On April 12, Michelle borrowed $5,000 from her credit union at 9% for 80 days. The credit union uses the ordinary interest method. a. What is the amount of interest on the loan? $90 b. What is the maturity value of the loan?$5090 c. What is the maturity

    asked by lynda
  160. criminal justice

    Who would be the stakeholders of human trafficking?

    asked by patiance
  161. math

    You have a subscription to a music website that allows you to download 25 songs from the site each month. You are charged an additional fee after the first 25 songs are download. After downloading 28 songs, you paid a total of $34.80. After downloading 30

    asked by Taylor
  162. Evaluating Expressions

    3D+(5-D);D=4 ------ 2. 8+2G-G/2;G=6

    asked by EMILY
  163. Government

    Which is NOT a factor that reinforces America's two-party system? 1.)Broad ideological consensus limits the appeal of radical parties. 2.)The winner-take-all system makes it harder for third parties to gain popularity. 3.)The two-party system was preferred

    asked by Rebecca
  164. math

    the annual household cost of telephone service in the US increased at a relatively constant rate of $27.80 per year from 1981 to 2001. IN 2001 the annual household cost of telephone service was $914. a:What was the annual household cost of telephone

    asked by Taylor
  165. Grammar

    Is this wrong? Anyone has a deal? I think it is supposed to be..... Anyone have a deal?

    asked by Anonymous
  166. CHEMISTRY

    Post a New Question Current Questions Homework Help: Chemistry Posted by Anonymous on Thursday, November 14, 2013 at 8:45pm. CONTINUE>>>>>>>>>>> The enthalpy changes for two different hydrogenation reactions of C2H2 are: C2H2+H2---->C2H4 Delta H 1 (there

    asked by Anonymous
  167. math

    the amount of revenue brought in by states from motor vheicle licenses increased at a relatively constant rate of 499.79 million dollars per year from 1990 to 2000. In 2000, the states brought in 15099 million dollars in revenue from motor vehicle. a: what

    asked by Taylor
  168. math

    the annual household cost of telephone service in the US increased at a relatively constant rate of $27.80 per year from 1981 to 2001. IN 2001 the annual household cost of telephone service was $914. a:What was the annual household cost of telephone

    asked by Taylor
  169. Pre calculus

    Solve for all values between zero and 360 degrees. cos(theta-42 degrees)=-1 What is the general solution and what is the solution????

    asked by Anonymous
  170. physics

    a car moving at 22.0 m/s strikes a large tree and comes to rest in a distance of 1.55m. assuming negative acceleration. what is the time needed to stop the car? what is the average acceleration

    asked by Anonymous
  171. Quantitative methods

    How do I plot following constrains in graph. 1. w + 4 s

    asked by Daya
  172. Math

    If you are describing a graph that consists of a parabola and a line that intersect at two points, would the system be dependent and consistent. Or is dependent only used if the system has an infinite amount of solutions? Thanks!

    asked by Serena
  173. US History

    What is Patrick Henry referring to when he states : "Their clanking may be heard on the plains of Boston"?

    asked by Anna
  174. math

    What is the percent of each number? 1. 3% of 45 2. 44% of 125 3. 95% of 64 4. 2% of 15.4 Show your work

    asked by Please Help!!!
  175. math

    Lexi and Maria had $250 altogether. After Lexi spent 2 over 5 of her money and Maria spent $40, they had the same amount of money left. How much money did Lexi have in the beginning?

    asked by Please Help!!!
  176. physics

    A metal wire has a resistance of 8 ohm at a temperature of 20 degree celcius . If the same wire has a resistance of 8.40 ohm at 70 degree celcius , what is the resistance of this wire in ohms when its temperature is -10 degree celcius ?

    asked by rosa
  177. physics

    A metal wire has a resistance of 8 ohm at a temperature of 20 degree celcius . If the same wire has a resistance of 8.40 ohm at 70 degree celcius , what is the resistance of this wire in ohms when its temperature is -10 degree celcius ?

    asked by rosa
  178. networking

    A firm is assigned the network part 128.171 It selects a 10-bit subnet part a) draw the bits for the first four octets of the IP address of the first host on the first subnet. b) convert this answer to dotted decimal notation. c) Draw the bits for the

    asked by Chelsea
  179. MATH

    Calculate the maturity value of a simple interest, eight-month loan of $15,000 if the interest rate is 4.5%.

    asked by junie w.
  180. math

    What is the future value of $5000 earning 6% interest, compounded monthly, for 5 years?

    asked by sharon q.
  181. math

    A student downloaded seven music files to a portable MP3 player. In how many different orders can the songs be played?

    asked by latisha
  182. math

    A student downloaded seven music files to a portable MP3 player. In how many different orders can the songs be played?

    asked by latisha
  183. statistics

    A teacher finds that the test scores of a group of 40 students have a mean of 75 and a standard deviation of 10. If Anne has a test score of 88, what is Anne’s z-score?

    asked by latisha
  184. Ap bio

    When an amount of heat is transferred at a steady temperature, what happens to the entropy of the system gaining the heat? a.It decreases. b.It increases. c.It is lost to its surroundings. >>> d.It is unchanged.

    asked by Janis
  185. Physics

    To better understand the concept of static equilibrium a laboratory procedure asks the student to make a calculation before performing the experiment. The apparatus consists of a round level table in the center of which is a massless ring held in place

    asked by James
  186. Science! Biology 1

    Question: Which of following best describes the free-energy requirements of an organism? Answer Choices: During times of hibernation large amounts of free energy are required. Free-energy demand is consistent for all heterotrophs. The organism requires

    asked by Carmen
  187. Physics

    A 14.9-kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a 67.7-N horizontal force. Find the tension in the rope and the rope\'s angle from the vertical. The acceleration due to gravity is 9.81

    asked by James
  188. Physics

    Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 93.3 N, Jill pulls with 73.1 N in the northeast direction, and Jane pulls to the southeast with 181 N. (Since the donkey is involved with such uncoordinated people,

    asked by James
  189. A/P Biology

    The Echinopsis mamillosa is a flowering cactus native to Bolivia. A high-rise building is built near a particular Echinopsis, filtering the amount of direct sunlight it receives. Which of the following processes is negatively affected first by the

    asked by Greg
  190. physics

    Two forces act on an object. The first force has a magnitude of 17.0 N and is oriented 68.0° counter-clockwise from the x axis, while the 2nd force has x- and y-components (-19.0 N, 16.5 N). Express the magnitude and direction of the net force.

    asked by James
  191. DE Science

    I am thinking A. A scientist claims plants and animals that exhibit reproductive cycles based on the changing seasons are highly affected by climate change. What is the correct justification of the scientist's claims? A) Climate change can cause a timing

    asked by Jackie
  192. pre-alg Answer Check

    Use the proportion to find the missing length in the following similar figures. x/2 9/4 4.5 18 (My Answer) 8 2.25

    asked by Pretty Reckless
  193. Algebra

    Of two-car families in a small city, 88% remain two-car families in the following year and 12% become one-car families in the following year. Of one-car families, 72% remain one-car families and 28% become two-car families. Suppose these trends continue

    asked by Anju
  194. Algebra 1 (Reiny or Kuai)

    Can a linear equation represent a function if the straight line does not cross any lines of the graph?

    asked by Anonymous
  195. statistics

    I have to find mean, median and mode did I do this right? 21,21,22,22,22,26,34

    asked by annie
  196. statistics

    Find the mean, the median, and the mode for the following data. 21 21 22 22 22 26 34 Mean 335.1 rounded to 335, median 22, mode is 22

    asked by annie
  197. Math

    A student downloaded seven music files to a portable MP3 player. In how many different orders can the songs be played?

    asked by Jewels
  198. chemistry

    1. A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 500 gallons of gasoline every year, producing about 5 tons of carbon dioxide.\" To determine the truth of this

    asked by Anonymous
  199. algebra please help!!!!

    Write the inequality that represents the solution set for −20/11 y > −9/17.

    asked by 15634
  200. Math

    Suzanne bought 50 apples at the apple orchard.she bought 4 times as many red apples as green apples.how many more red apples than green apples did Suzanne buy?

    asked by Melody
  201. Statistics

    How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis.

    asked by Joseph
  202. physics

    Starting from rest, a(n)9 kg block slides 9.7 m down a frictionless ramp (inclined at 30◦ from the floor) to the bottom. The block then slides an additional 23.5 m along the floor before coming to stop. The acceleration of gravity is 9.8 m/s 2.Find the

    asked by enrique
  203. staistics, is it right?

    Find the mean, the median, and the mode for the following data. 21 21 22 22 22 26 34 Mean 335.1 rounded to 335, median 22, mode is 22 could someone tell me if I got this right?

    asked by annie