Questions Asked on
October 20, 2013

  1. Chemistry

    Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and we need to calculate the percent of KClO3 in the sample volumetrically and gravimetrically. I need help calculating the Volumetric percent of KClO3 in sample

    asked by Katelyn
  2. math

    on a farm, there are some cows and some chickens. if the animals have a total of 40 heads and 112 legs, how many cows are there?

    asked by milly
  3. Organic Chemistry

    So we did a preparation of t-pentyl Chloride experiment in class the other day using t-pentyl alcohol, HCL, Aqueous sodium Bicarbonate, and calcium chloride as the drying agent. Little confused on a few of these questions Aqueous sodium bicarbonate was

    asked by BigBlue
  4. Science

    Trini adds 10g of baking soda to 100g of vinegar. The mixture begins to bubble. When the bubbling stops, trini finds the mass of the resulting mixture. She determines its mass is 105g. Why has the mass changed? A. A gas has formed and left the mixture B.

    asked by Jessica
  5. Math

    Ann has $198 more than her sister. After her mom gives Ann $20 and her sister $60, Ann has twice as much money as her sister. How much money did Ann have at first?

    asked by Jimmy
  6. Statistics

    The coding department of a large physician clinic is interested in purchasing a software program that will edit claims before they are sent out to billing. The license fee for the software costs $34,000 per year. The software is expected to reduce the

    asked by Annonimous
  7. Physics

    Vanessa can swim 3.0 m/s in still water. While trying to swim directly across a river from west to east, Vanessa is pulled by a current flowing southward at 2.0 m/s. A) What is the magnitude of Vanessa’s resultant velocity? B) If Vanessa wants to end up

    asked by Kailey
  8. math

    naomi macy and sebastian have 234 stamps in all. naomi gives 16 stamps to macy and 24 stamps to sebastian. naomi then has 3 times as many stamps as macy, and macy has twice as many stamps as sebastian. how many stamps does naomi have at first?

    asked by milly
  9. chemistry

    2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was found to be 60. a)What are the masses of carbon, hydrogen and oxygen in 2.4g of the compound? b)What are

    asked by Bria
  10. physic

    Bungee Jumping. A bungee jumper jumps from a tall bridge attached to a light elastic cord (bungee cord) of unstretched length L. The cord first straightens and then extends as the jumper falls. This prevents her from hitting the water! Suppose that the

    asked by Anonymous
  11. Science/Physics

    The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 46 m in a straight line, reaching a final speed of 73 km/h.

    asked by Abena
  12. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution? Thank you for the help!!

    asked by Homework help
  13. Organic Chemistry lab

    So we did a preparation of t-pentyl Chloride experiment in class the other day using t-pentyl alcohol, HCL, Aqueous sodium Bicarbonate, and calcium chloride as the drying agent. Little confused on a few of these questions Why is calcium chloride used as

    asked by BigBlue
  14. Statistics

    Dear Sue, I need your help concerning the below questions. Thank you. The coding department of a large physician clinic is interested in purchasing a software program that will edit claims before they are sent out to billing. The license fee for the

    asked by Annonimous
  15. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

    asked by D.C.
  16. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

    asked by D.C.
  17. Chemistry

    Even if you can help answer one that would be a great help! 1. How many liters of NO(g) are produced when 0.85L of 2.00M HNO3 solution is added to 216g according to the equation. Which reactant is the limiting reactant? 3 Ag + 4 HNO3 -> 3 AgNO3 + NO + 2

    asked by P.
  18. math

    Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.)

    asked by brian
  19. chem thermo

    consider a system consisting of 2.0mol co2(g) initially at 25c and 10atm and confined to a cylinder of cross section 10.0cm2. it is allowed to expand adiabatically against an external pressure of 1.0atm until the piston has moved outwards through a 20cm.

    asked by susie
  20. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution? Thank you for the help!!

    asked by D.C.
  21. Science

    A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile. What best describes? A. Solution or iron and

    asked by Brianna
  22. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

    asked by D.C.
  23. chemistry

    if air contains78% of nitrogen by volume what is the solubility nitrogen in water at 25 degree celcius?

    asked by minte
  24. chemistry

    2.0 grams of Anhydrous sodium are mixed with 2.0 grams of calcium chloride dihydrate and 2.0 grams of calcium sulfate dihydrate are collected what is the percent yield. DO not round a number if used in a subsequent calculation

    asked by Anonymous
  25. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?

    asked by Sam
  26. Chemistry

    For the diprotic weak acid H2A, Ka1 = 2.2 × 10-5 M and Ka2 = 7.8 × 10-7 M. What is the pH of a 0.0650 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution? Thank you for the help!!

    asked by Homework help
  27. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by HELP in physics!!!
  28. physics

    Maria is standing 4.5 meters from the tennis net. She hits the ball horizontally with a velocity of 18.0 m/s from a height of 1.20 meters. Will the ball clear the net, which has a height of 1.0 meters? This is a question from my hw. I was wondering if

    asked by farnell
  29. AP Macroeconomics

    1. As an example of a price index, consider the A.C.D.P.I. (a fictitious price index). The associated basket of goods is: Good Quantity Price Coffee 3 lb $8/lb Bread 3 loaves $1/loaf Tea 1 lb $15/lb Aspirin 1 200-tablet bottle $2/bottle Cola 1 case $6/case

    asked by Emily
  30. chemistry

    2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was found to be 60. a)What are the masses of carbon, hydrogen and oxygen in 2.4g of the compound? b)What are

    asked by Bria
  31. Chem

    The fizz produced when an alka-seltzer tablet is dissolved in water is due to the reaction between sodium bicarbonate and citric acid: 3NaHCO3 + H3C6H5O7 -> 3CO2 + 3H2O + Na3C6H5O7 In an Experiment 1.00 g of sodium bicarbonate and 1.00g of citric acid are

    asked by Lu
  32. english

    Which of the following is not true of parenthetical elements? A. The information they supply is necessary for the sentence to make sense. B. The information they supply can modify the subject or the verb. C. They provide additional detail. D. They require

    asked by Cassie
  33. chemistry

    how many grams of oxygen is needed to burn 500 grams of pentane?

    asked by Anonymous
  34. physics

    As a tennis ball is struck, it departs from the racket horizontally with a speed of 27.1 m/s. The ball hits the court at a horizontal distance of 20.0 m from the racket. How far above the court is the tennis ball when it leaves the racket

    asked by victoria C!!
  35. chemistry

    If 4.02 grams of a hydrate of magnesium sulfate loses 2.06 grams of water when heated, what is the formula for the hydrate

    asked by Anonymous
  36. math

    together, tom and max have 72 football cards.Tom has 2 more than 4 times as many cards as Max has. How many football cards does tom have ?

    asked by lana
  37. physics

    A 5.7 kg bag of groceries is in equilibrium on an incline of angle θ = 16°. Find the magnitude of the normal force on the bag.

    asked by Anonymous
  38. Biology

    Which of the following cells check for during the G2 check point? a. Growth hormone c. DNA integrity b. Nutritional status d. Cell size In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32

    asked by John
  39. math

    a tank and a pail contain a total of 5,136 milliliters of water. jacob pours 314 milliliters of waster from the pail into the tank. the amount of water in the tank is now 7 times what is left in the pail. how much water was in the pail at first?

    asked by naomi
  40. Physics

    A constant force of 35.9 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.41 m. Calculate the work done by the force.

    asked by Kristen
  41. Physics

    A constant force of 35.9 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.41 m. Calculate the work done by the force.

    asked by Kristen
  42. math

    a jar contains 5 blue marbles, 8 red marbles,4 white marbles,and 3 purple marbles. suppose you pick a marble at random not looking. what is the chance of getting a red marble

    asked by wes
  43. Physics

    A baseball of mass 0.13 kg, moving horizontally with a momentum of 4 kg¡Pm/s, is struck head-on by a baseball bat with an impulse of 10 N¡Ps. What is the speed of the baseball after it is struck? _______m/s

    asked by anonymous
  44. math

    a group of people pays $720 for admission tickets to an amusement park the price of an adult ticket is $15, and a child ticket is $8. there are 25 more adults than children. how many children are in the group?

    asked by naomi
  45. phyics

    A ball is thrown straight upward. At 5.00 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?

    asked by Johnny
  46. Algebra

    A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 31 said they drove alone, 39 rode in carpool, 35 rode public transportation, 10 used both carpool and public transportation, 7 used both

    asked by Jodie
  47. Biology

    single celled prokaryotes like the bacteria and archaea are the dominant and most diversified groups of living forms today. does this support their ancient origins? Explain

    asked by student
  48. Math

    How much low fat milk(1%) and whole milk(4%) should be mixed to make 5 gallons of reduced fat milk (2%)?

    asked by Chuck
  49. Science

    Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment? A. hypothesis, models, and calculations B. test variables, data, and uncontrolled conditions C. data, conclusions, and unregulated environment

    asked by Anne
  50. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?

    asked by Sam
  51. math

    Two sides of a triangle have lengths 8 m and 24 m. The angle between them is increasing at a rate of 0.05 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 135°. Round your answer to two

    asked by christina
  52. PHYSCIS

    a solid of density 5000 kgf weights 0.5 kgf in air . it is completely immersed in water of density 1000 kg m-3.calculate the apparent weight of the solid in water.

    asked by ASTINA
  53. Physics

    Vanessa can swim 3.0 m/s in still water. While trying to swim directly across a river from west to east, Vanessa is pulled by a current flowing southward at 2.0 m/s. A) What is the magnitude of Vanessa’s resultant velocity? B) If Vanessa wants to end up

    asked by Kailey
  54. math

    Stella brought 3/8 of a pound of grapes and ate 1/3 of the grapes.How muchdid she eat?

    asked by anonymous
  55. Chemistry

    The element boron has three naturally occuring isotopes. One has the atomic mass 10.0129(54.4%), another 11.0093(12.75%). What is the atomic mass of the third isotope if the average atomic mass of boron is 10.811?

    asked by Anonymous
  56. biology (Help please!!!)

    1. If a student pours a solution of salt water on an elodea leaf, what is it an example of? 2.A child pours salt crystals on the body of a slug he finds in the backyard. Options are: high concentration, low concentration, osmosis, diffusion, hypertonic

    asked by Samantha
  57. statistics

    A university has 1000 computers available for students to use. Each computer has a 250 gigabyte hard drive. The university wants to estimate the space occupied on the hard drives. A random sample of 100 computers showed a mean of 115 gigabytes used with a

    asked by Anonymous
  58. Statistics

    What is the percentage of immigrants living here in the U.S. legally? Of these people, how many are naturalized? I've tried looking this up, but either the article was made without the full 2012 census or it talked about illegal immigrants.

    asked by Chipe Martinez
  59. AP Macroeconomics

    Which of these is a component of the interest rate on a 10-year inflation indexed US government bond? A.)Risk that the borrower will default B.)Positive rate of time preference C.)Expected inflation rate D.)general uncertainty about the future

    asked by Emily
  60. Chemisty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D.

    asked by Joe
  61. Math 1

    Consider the following system of equations. y = 4x - 4 y - 4x = 3 What can you conclude about the system of equations? A) The system of equations is inconsistent. B) The system of equations is dependent. C) The system of equations is independent. D) none

    asked by sam
  62. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?

    asked by Sam
  63. math

    Two sides of a triangle have lengths 15 m and 18 m. The angle between them is decreasing at a rate of 0.08 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 120°.

    asked by christina
  64. Physics Homework

    Consider problem U concerning the geosynchronous satellite of mass 50 kg. It orbits at a radius of 42,300 km with a speed of 3076 m/s. a) How much energy is needed to lift the satellite from the earth's surface (Re=6,370 km) up to that radius? b) How much

    asked by Eli Smith
  65. Math

    what is the scale factor of ~ 1 inch= 3 feet please explain!

    asked by Anonymous
  66. french

    how do you unscramble rumoe-ised

    asked by Anonymous
  67. College Physics

    A fire hose 4.79 cm in diameter is capable of spraying water at a velocity of 17.1 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?

    asked by Kimmy
  68. Chemisrty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

    asked by Kristen
  69. Science

    Which of the following is an example of how economics can affect science? A. Limited funding may lead scientists to research one topic instead of another. B. Legislators may create new laws about the use of natural resources based on the recommendations of

    asked by Jessica
  70. Physics

    Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.50 T. When viewed edge-on, the first surface is tilted at an angle of 14° from the horizontal, and a net magnetic flux of 8.70x10^-3 Wb passes through it. The same net

    asked by Anonymous
  71. CHEMISTRY

    25cm^3 of a solution of NaOH required 28cm^3 of 1.0 mol dm^-3 H2SO4 to neutralise it. a)Write an equation for the reaction. b)How many moles of H2SO4 were needed? c)How many moles of NaOH were thus neutralised? d)How many moles of NaOH are there in 25cm^3

    asked by Ava
  72. Science

    Water freezes at 0 Celisus. If a temperature drop is causing a glass of water to freeze, how would a thermometer in the water most likely change as the water freezes? A. The temperature would keep rising steadily. B. The temperature would keep falling

    asked by Anne
  73. Physics pls anyone can help me? its urgent

    A charged rod of length 21cm and total charge -7.5muC is bent into a three-quarter circle symetric about the x-axis as shown below What is the magnitude of the Electric Field at the center of the three-quarter circle in N/C ?:Which directions listed below

    asked by nisha
  74. Physics Homework

    Consider problem U concerning the geosynchronous satellite of mass 50 kg. It orbits at a radius of 42,300 km with a speed of 3076 m/s. a) How much energy is needed to lift the satellite from the earth's surface (Re=6,370 km) up to that radius? b) How much

    asked by Eli Smith
  75. Statistics

    A sociologist is interested in the relations between x=number of job changes and y=annual salary (in thousands of dollars) for people living in the Nashville area. A random sample of 10 people employed in Nashville provided the following information:

    asked by Amanda
  76. physics(HELP IT'S URGENT)

    A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the

    asked by Anonymous
  77. Science

    Astrologers relate the location of stars and planets to events in human lives. Many years ago, people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience A. Astrology does not involve the use of telescopes.

    asked by Anne
  78. Math

    Pls check write this number in standard form Nine hundred two trillion six hundred seven 902,000,000,000,607

    asked by Gio
  79. physics

    008 (part 1 of 5) 10.0 points A wheel makes 72 revolutions in 2 seconds. What is the angular velocity of the wheel? Answer in units of cycles/s

    asked by Shelly
  80. Phyics

    A hot-air balloon is rising upward with a constant speed of 4.00 m/s. When the balloon is 4.77 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

    asked by Johnny
  81. Psychology/ Ms Sue

    Please check my answers 1. During puberty, boys testosterone production increases up to 5 times the level in childhood? True 2. Babies of teenagers have a higher risk of birth complications? True 3. Most STIs are fatal if not treated properly? False 4.

    asked by Lisa
  82. Physics

    A 0.115 kg baseball is thrown upward with an initial speed of 17.0 m/s.

    asked by Anonymous
  83. science@@@@

    how to make a model for scince fair for purification of smoke coming out of chimneys? And how this purified smoke can be used for useful purposes? Does smoke contain moisture?

    asked by edward
  84. cpt

    cpt code for suicide

    asked by Selvia
  85. math

    Find the sum of the squares of the deviations from the mean of a series of ACT scores: 24,17,27,25,22

    asked by Tay
  86. math

    2(x+3)=-4(x+1) my answer is 5/3 am i right?

    asked by Anonymous
  87. Chemistry

    would the calculated molar volume be larger, smaller or unchanged. a. the partial pressure of water was not taken into account

    asked by Lisa
  88. Physics

    A 0.245kg ball is thrown straight up from 2.20m above the ground. Its initial vertical speed is 8.80m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time.

    asked by Kristen
  89. calc

    Determine whether the statement is true or false. d dx |x2 + x| = |2x + 1|

    asked by Anonymous
  90. Geography

    I have to write a three paragraph essay on the causes of terrorism. One paragraph for each cause. All I am helping is finding 3 good causes and a little information about how they cause terrorism.

    asked by Katie
  91. Algebra

    We were asked to determine whether the equation defines y as a function of x. Could you explain this problem? y = x^2

    asked by Workshop 3
  92. Math

    There are 22 gloves in a drawer. 5 brown pair, 4 green pair, and 2 blue pair. If you had the reach into the drawer and it was dark, how many must you choose to ensure that you have a matching pair?

    asked by Rachel
  93. PHYSICS URGENT HELP

    A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the

    asked by Anonymous
  94. Geography Report (Ms. Sue)

    This is the human-environment interaction paragraph. "There are many examples of human-environment interaction in the city of Chicago, such as its architecture, dams, bridges, and its highways. However, what it is believed to the most astonishing display

    asked by Anonymous
  95. Algebra

    a line passes through the point (4,1) and has a slope -4 write an equation for this line

    asked by Tracy
  96. physics(elena)

    A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the

    asked by Anonymous
  97. Chemistry

    Why is the copper/ sulfur mass ratio different from the mole ratio

    asked by Anonymous
  98. math

    find 15% of 60, 20 is what percent of 5. how do you do this?

    asked by jack
  99. Physics

    A skier skis from rest from a vertical height h1 = 19.1 m over two successively lower hills of vertical heights h2 = 15 m and h3 = 5.2 m. (Fig. 7-30). The summit of the third hill fits a circle of radius h3 centered at height 0 m. Friction with the snow

    asked by webassign
  100. Statistics

    Suppose you and a friend each take different random samples of data pairs (x,y) from the same population. Assume the samples are the same size. Based on your samples, you compute r = 0.83. Based on her sample your friend computes 0.79. Is your friend’s

    asked by Trish
  101. World History and Geography 9R - HELP!!!!!!!!!!!!!

    Hinduism VS Buddhism?? Similarities and differences Please help and something for a 9th grader to UNDERSTAND.

    asked by Laruen
  102. science

    Now assume that we are working in units such that ℏ=1. If the state of the system at time t=0 is ψ(0)=|0⟩, what is the state of the system at time t=π2? What about at t=π? t=π2:

    asked by tpd
  103. Math check

    Jack the parrot has learned to say, jack wants a cracker, if he repeats the phrase every 5 minutes for 3 hours and is given a cracker each time he asked for one how many crackers will he eat? 12 crackers ea hour 12 × 3= 36

    asked by Gio
  104. Water Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

    asked by youlifex
  105. science

    Describe the motions that causes one day on earth

    asked by gg
  106. Math- Algebra

    A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 minutes at a certain rate; traffic then increased and for the next 6 minutes he averaged 10 miles per hour less than his original speed; then traffic eased up

    asked by Jennifer
  107. physics

    You apply a potential difference of 5.00 V between the ends of a wire that is 2.65 m in length and 0.654 mm in radius. The resulting current through the wire is 17.6 A. What is the resistivity of the wire?

    asked by Dan
  108. Social studies

    What advanced technology is in the us What record keeping in the us

    asked by Anonymous
  109. arithmetic

    5. Assume that if students buy more than $250 of art supplies in one visit, they may put the charge on a student account with terms of 2/10 EOM. If a student makes the purchase on September 16, on what day does the 2% discount expire? If the purchase is

    asked by Anonymous
  110. physics

    A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 14.2 m/s at an angle of 43.2° above the horizontal. It rises to its maximum height and then falls down to the green.

    asked by victoria c
  111. english

    4. Which of the following sentences contains a comma splice? A.The kitten climbed the drapes, it couldn't figure out how to get down. B.The cruise ship docked on Oahu, then again on Maui. C.We need help with organization, structure, and spelling. D.Our

    asked by Cassie
  112. Science207

    Describe at least two alternatives to oil that are currently available and discuss the barriers that keep these alternatives from replacing oil as our primary means of energy?

    asked by Anonymous
  113. math 5

    Identify the solution(s) of the system of equations, if any. 3x+2y=4 5x-4y=3 A) (1, 0.5) B) (0.5,1) C) (5, 5.5) D) 5/11, -2/11)

    asked by sam
  114. math 8

    Identify the solution(s) of the system of equations, if any. 5x + 2y = 2 4x - 2y = 8 A) (9/10, -5/4 ) B) (–6, 16) C) (10/9, -16/9 ) D) (10, –24)

    asked by sam
  115. Math

    Lebron James scored 34 points on a combination of 21 foul shots (1 point) and two pointers. How many shots of each type did he make.

    asked by Chelsey
  116. math

    2x+6/3=3x-1/2 i got 5/9, is it right?

    asked by Anonymous
  117. Algebra

    a line passes through the point (-7,-4) and has a slope of 3 write an equation for this line

    asked by Tracy
  118. College Physics

    A 27.7-cm-by-27.7-cm checkerboard has a mass of 103.1 g. There are four 27.7-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the

    asked by Kimmy
  119. algebra functions

    how do i calculate this if f(x)= 3x+1 and g(x)=x+2 find (f+g)(x) and calculate (f+g)(1) a little confused can some one please help me thank you

    asked by christin
  120. Math (Algebra 1)

    How do I find the volume of a cylinder that has a diameter of 8 and a height of 6?

    asked by Jordan
  121. Statistics

    a. Critical Thinking Critical Thinking Suppose you and a friend each take different random samples of data pairs (x,y) from the sample population. Assume the samples are the same size. Based on your samples, you compute r= 0.83. Based on her sample, your

    asked by Amanda
  122. Math

    Pls check - Solve 9^2-7 (16÷2^3) 9^2-7 (16÷8) 81-7 (2) 81-14 67

    asked by Gio
  123. Math

    Pls check - Solve 9^2-7 (16÷2^3) 9^2-7 (16÷8) 81-7 (2) 81-14 67

    asked by Gio
  124. Physics

    A perforated bead of mass 37g moves on a frictionless horizontal circular track of radius R=0.65m. The track runs through the bead. When the bead is at rest in the horizontal position, it is tied to a spring at the centre of the track. The unstretched

    asked by Anonymous
  125. Math check

    what is the measure of an angle that is supplementary to the following angle. An Acute angle of 57º 57º+90º= Answer 147º

    asked by Gio
  126. math

    determine ratio for 4 feet to 32 inches & 10 days to 40 hours. for the 1st I got 48/32=3/2 but i'm not to sure about the other one, it would be less than 2 days?

    asked by sandra
  127. math 9

    Identify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y A) (28/13, 3/13) B) (-3/17, 32/17) C) (32/17, -3/17) D) (32/9, 7/3) I think the answer is D but i did my check and still comes out incorrect

    asked by sam
  128. Algebra

    graph the line with slope -2/3 passing through (-5, -5)

    asked by Tracy
  129. Economics

    What does, "What are two ways you might use to increase profits once your stained glass window factory is established? Please include what problems you can anticipate from each decision." mean?

    asked by Nicole
  130. books (Death of a Salesman)

    Is Linda responsible for Willy's failure and suicide? Please help and thank you! any helpful sites that help answer this question will also be appreciated

    asked by Jasmine
  131. Chemistry

    50.0mL of 1.04moles HA is added to 50.0mL if 0.90moles NH4OH.With a 1:1 stoichiometric ratio. What is the limiting reactant in moles of this reaction.

    asked by Morgan
  132. chemistry

    DrBob222 - it says my answer should be a number.

    asked by Morgan
  133. Citizens

    What are the rights and responsibilities of citizens? I've already got down 3 rights.

    asked by Chipe Martinez
  134. Math

    What does m equal? M*10-m*13=138

    asked by Shohanur
  135. Economics.

    What does, "What are two strategies might you employ in order to create and maintain a high demand for stained glass windows. Be sure to consider what would work best for your targeted customer base." mean? NOTE: My targeted customers are: In their middle

    asked by Nicole
  136. algebra functions

    how do i calculate this if f(x)= 3x+1 and g(x)=x+2 find (fg)(x)and calculate (fg)(2) is this multiplication and if so what do i do first any help would be appreciated

    asked by christin
  137. MATH

    What does 5.0454e+14 mean?????

    asked by HELPPP!!!
  138. Ecology Intervention Project

    ms. sue can you answer my question

    asked by Reina B.
  139. sciencee!

    What natural zone are each of these cities or areas in? Los Angeles, Palm Springs, Santa Monica Mountains, Catalina, San Francisco, Yosemite --choices are-sierra transitional zone, humid transitional zone,upper sonoran, lower snoran, redwood belt,

    asked by Sasha
  140. English

    What object would you write this poem on and why? The Secrets We Hide © Tiffany Franklin we struggle to have meaning in this world which we all know we try but yet we wonder where we all should go hidden in the questions which we can not find the answers

    asked by Margarita
  141. Physics

    I have a hw problem that I know involves calculus, but I'm stumped. The number density of photons left over from the Big Bang has an energy dependence of the form n(E)=(E^2)/e^(E/T)−1, where E is the energy of the photon and T is the temperature of this

    asked by Anonymous
  142. Algebra 1 HELP

    -5(1-5x)+5(-8x-2)=-4x-8x

    asked by Gayle
  143. physics

    A car has a maximum acceleration of 4.6m/s2 . What will the maximum acceleration be if the car is towing another car of the same mass?

    asked by Anonymous
  144. Math (College Pre-Cal)

    Find a formula for(f o g)(x)assuming that f(x)= e^(4-7x)and g(x)= ln(x). Give your answer in the simplest form.

    asked by anonymous
  145. Algebra 2

    I need help in understanding how to multiply the following matrix: 1/4 [ 4 0 -3 1] [12 16 6 -4] [0 -2 5 8]

    asked by Lily
  146. Physics

    A 6 kg rifle is used to fire a 9 g bullet, which travels with a speed of 700 m/s. (a) What is the speed of recoil of the rifle? ______m/s (b) How much energy does it transmit to the shoulder of the person using the rifle as it stops? ______J I have solved

    asked by anonymous
  147. Math check

    If the radius of a circle is 5 cm what is the area? Formula A=pi r^2 A=3.14×5×5 A=78.50

    asked by Gio
  148. Math

    A farmer has 12000m roll of fencing. He wants to make 2 paddocks by splitting a rectangle enclosure in half. What are the dimensions of the enclosure with the largest area that he can make with the fencing he has? I got 6,000,000 m^2, is it right? PLZ help

    asked by RHINO
  149. Math

    A farmer has 12000m roll of fencing. He wants to make 2 paddocks by splitting a rectangle enclosure in half. What are the dimensions of the enclosure with the largest area that he can make with the fencing he has? I got 6,000,000 m^2, is it right? PLZ help

    asked by RHINO
  150. ela

    How does using conflict create suspense?

    asked by cassidy
  151. Math

    A farmer has 12000m roll of fencing. He wants to make 2 paddocks by splitting a rectangle enclosure in half. What are the dimensions of the enclosure with the largest area that he can make with the fencing he has? I got 6,000,000 m^2, is it right? PLZ help

    asked by RHINO
  152. A Curious Question

    What is the format, or layout, of a report?

    asked by Anonymous
  153. Environmental Science

    Would you expect to find the humid transitional zones on the coast or inland? Northern or Southern part of California?

    asked by Sasha
  154. science

    Why is a coyote a poor indicator species What natural zone are each of these cities or areas in? Los Angeles, Palm Springs, Santa Monica Mountains, Catalina, San Francisco, Yosemite.

    asked by s
  155. Computer

    How do i write a ratio into excel

    asked by Timothy
  156. math

    the trajectory, of the projectile satisfies the following equation,wher g is the acceleration due to gravity, y=mx-g/2v^2(1+m^2)x^2 where y as the vertical rise, and x asthe horizontal component of the displacement. A football is kicked with initial

    asked by walter hughes
  157. Algebra

    Each day, a lion in South Africa spends 1/4 of the day watching gnus and 1/4 hours chasing gnus. Then the lion takes 4 times as much time consuming the gnus as chasing the gnus. What is the number of minutes that a lion spends a day watching, chasing and

    asked by steve
  158. advanced functions

    Solve the inequality 12x^3 + 8x^2

    asked by Rinchan
  159. home economics

    what are welfare payments

    asked by sandiswa
  160. physics

    A constant force of 58.3 N, directed at 31.7 degrees form horizontal, pulls a mass of 11.9 kg horizontally a distance of 2.77 m. Calculate the work done by the force.

    asked by Lara
  161. ms.sue please help

    so my intervention is how i'm going to reduce air pollution like convincing people to walk and ride bikes etc. and then how people are also trying to help reduce pollution? Ecology Intervention Project - Reina B., Saturday, October 19, 2013 at 10:13pm the

    asked by Reina B.
  162. Turabian Citation

    For citing using the Turabian or Chicago format, do you have to put a subscript and a footnote at the end of every sentence? If not, if you have two sentences that belong to the same source, would you put the footnote at the end of the second sentence like

    asked by Serena
  163. Projectile motion

    A cannon is fired from a cliff top 15m high and at 30 degrees. It takes 3 seconds for canon to reach the earth, what is the initial velocity of the cannon

    asked by Lorna
  164. Algebra (Word Problem)

    Jack and Jill each tipped their waiter 50 dollars. Jack tipped 4% of his bill while Jill tipped 10% of her bill. What is the total bill of the two?

    asked by Ruth
  165. math

    125% of what number is 50? do you do 1.25 x 50?

    asked by jack
  166. Physics

    Question:In the field of telecommunications, sound waves are sent to faraway places with the help of a kind of electromagnetic wave. Explain, by using a block diagram, how sound waves can be transmitted over long distances.

    asked by Kindra
  167. Ecology Intervention Project

    "two other projects that are either similar to your intervention or address a similar issue. remember to relate these projects to yours" i'm doing a project on air pollution and how it affects the environment but i don't know projects similar to my

    asked by Reina B.
  168. Civics

    How is the declaration related to John Locke's idea of the social contract?

    asked by Anonymous
  169. physics

    A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the

    asked by Anonymous
  170. Math

    Can I simplify (12960 - 0.1x^2) / 0.2x^2 any further? How?

    asked by Cal
  171. math

    please help simplify 5(x-1) - 3(x^2 + 4x + 5) - 8(x + 7)

    asked by Elisa
  172. physics

    n object is dropped from rest. What is the acceleration after 6 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/

    asked by alyssa
  173. science

    Explain what causes the tides to change

    asked by Abby
  174. science

    1 what would cause a plant to have a shorter day. 2 what would cause a plant to have a longer day

    asked by justin
  175. physics

    A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the

    asked by Anonymous
  176. math

    please factor: x^2-6x-7

    asked by Elisa
  177. Chemistry

    Is my answer in 3 sig fig or 4 sig fig?? A solution is prepared by dissolving 12.80 g of magnesium chlorite in enough water to make 200.0 mL of stock solution. A 25.0 mL aliquot (portion) of this stock solution is then removed and added to 250.0 mL of

    asked by Anonymous
  178. algebra

    the printed matter on a 10 by 16 centimeter page of a book must cover 40 square centimeters. if all margins are to be the same width, how wide should they be?

    asked by Faith
  179. Math check

    michael has 79 dvds. He can store 15 dvds in a wooden crate. how many crates will he need 79÷15 = 5 but I get a remainder 4. Is it right to say he'll need 5 crates

    asked by Gio
  180. Geography Report (Ms. Sue)

    I know you told me not to post a rough draft, but I have only written three paragraphs and I am struggling to write the others. Even so, could you evaluate the paragraphs I have already written and tell me of what could be improved or improvised. Thank

    asked by Anonymous
  181. Pre-Calculus

    Find the value of the parameter: x = 3t y = t^2 + 5 t = 2

    asked by Joy
  182. algebra

    Beatriz is creating graphs for her city’s Parks Department. Beatriz is trying to persuade the Parks Department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to

    asked by angelica
  183. Algebra

    4x-3y=-6 finding the x and y intercept line based on a equation in standard form

    asked by Tracy
  184. Algebra

    how do you find -4/5 on a graph?

    asked by Tracy
  185. Biology

    I am having a really hard time understanding respiration and photosynthesis. Is there a simple explanation for both processes?

    asked by Anonymous
  186. social studies

    which is least likely to be found at the poverty point site ? a) clay cooking balls b) spears c) pendants d) hand plows

    asked by victoria
  187. Calculus

    Determine whether the integral is divergent or convergent. If it is convergent, evaluate it. If it diverges to infinity, state your answer as INF. If it diverges to negative infinity, state your answer as MINF. If it diverges without being infinity or

    asked by Robin
  188. Chemistry

    explain why glucose 1,6 bisphosphate would not be able to go through the aldolase reaction.

    asked by Max
  189. college physics

    Why do the passengers in high- altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?

    asked by bbragg
  190. science.please help!

    Would you expect to find the humid transitional zones on the coast or inland? Northern or Southern part of California?

    asked by sasha
  191. Math

    peyton has1218 fancy hat in her closet. if payton gives grace 1/3 of those fancy hats how many fancy hats will grace have?

    asked by Gio
  192. math

    Identify the solution(s) of the system of equations, if any. -4x - 4y = 4 4y = -4x - 4 A) no solution B) (0, -1) C) (-1, 0) D) infinitely many solutions

    asked by sam
  193. algegra

    an editor gets a 2110 raise each year. after 8 years she makes 51,700 per year. write an equation that gives her income as a function of how many years she has worked

    asked by aaron
  194. chemistry

    A B C D E F G H 14Si A B C D E F G H 13Al A B C D E F G H 12Mg A B C D E F G H 4Be A B C D E F G H

    asked by Jermey
  195. Math 3

    Identify the solution(s) of the system of equations, if any. x + 2y = 6 3x - 6y = 0 A) (3, 2/3) B) (3,3/2 ) C) (2/3, 3) D) (3/2, 3)

    asked by sam
  196. math 4

    Identify the solution(s) of the system of equations, if any. 6x + 2y = 0 y = 1 - 5x A) (–1.5, –0.5) B) (–1.5, 0.5) C) (–0.5, –1.5) D) (0.5, –1.5)

    asked by sam
  197. Chemistry

    Choose from the list the correct electron configurations for the following ions. A B C D E F G H I J K+ A B C D E F G H I J In+ A B C D E F G H I J Li+ A B C D E F G H I J Na+ A. 1s22s22p63s23p6 B. 1s22s22p63s23p64s23d104p64d105s25p1 C.

    asked by sara
  198. Math 6

    Identify the solution(s) of the system of equations, if any. -3x-4y=2 8y=-6x-4 A) infinitely many solutions B) (-16/9, 5/6) C) (-2/3, 0) D) no solution

    asked by sam