Questions Asked on
March 24, 2013

  1. Math

    29.There are 16 boys and 12 girls in Kelly's class.Her teacher wrote the name of each student on a card and placed the cards in a box without looking the teacher chose a card from the box.What is the probability that Kelly's teacher will pick a card with a

    asked by Jerald
  2. cycles of matter (life science)

    How does the Laws of Conservation of Matter and Energy relate to the Cycles in Nature?

    asked by Anonymous
  3. Energy Transfer and Heat flow

    1. What is entropy? 2.With every energy transfer, what form of energy is always released? I think 2 is Heat? not sure about 1

    asked by Anonymous
  4. Waves and the Media

    What do mechanical waves such as sound need that electromagnetic waves do not?

    asked by Anonymous
  5. Properties and changes of matter

    what gets hot and cold faster, solid or gas and why?

    asked by Anonymous
  6. math

    The surface area of the Great Pyramid at Giza was about 1,496,980 square feet when it was built. A model of this pyramid has a surface area of 599 square inches. what is the scale factor from the model to the actual pyramid?

    asked by Anonymous
  7. Physics

    A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 59.82 diopters, and the lens-to-retina distance is 1.686 cm. (a) How far is the blackboard from her eyes? (b) If the writing on the blackboard is 4.81

    asked by please help
  8. chemistry

    Tantalum metal is produced by reaction of potassium heptafluorotantalate (K2TaF7) with elemental sodium (Na) in a reactor heated to 850oC. The by-products are potassium fluoride (KF) and sodium fluoride (NaF). The reactor is charged with 244.0 kg of K2TaF7

    asked by schoolgirl
  9. statistics

    In a recent study on gender differences in education, a sample of 7 boys had a mean score of 18.5 and a standard deviation of 4.1 on a Standardized Math Test. A sample of 11 girls had a mean score of 19.9 and a standard deviation of 3.6 on the same test.

    asked by Alex
  10. Reliability of Evidence

    what are ways scientists try to keep their results valid when experimenting?

    asked by Anonymous
  11. Literacy

    Which search engine would be best to use when you want to know if your library carries a particular journal? A. Google Scholar B. Worldcat C. Webarchive D. All the Web my answer is a 2. Which of the following sets of Library of Congress call numbers is in

    asked by Kim
  12. physics

    a ball rolling on oa inclined plane dors so with constant acceleration. One ball, A, is released from rest on th etop of an inclined plane 18m long to reach the bottom 3s later. At the same time as A is released, another ball, B, is projected up the same

    asked by edward
  13. Quantum Physics

    Suppose we ran m steps of Grover's algorithm on some function f (which has one marked element y) and the resulting superposition was exactly |y>. (a) What was the state after the (m−1)th step? Note that you can describe the superposition by specifying

    asked by helpless
  14. Quantum Physics

    Let f:{0,1}^3→{0,1} with f(101)=1 and f(x)=0 for x≠101. In this question, we will run through two iterations of the algorithm. (a) What is the superposition after the initialization step? Note that you can describe the superposition ∑x∈{0,1}3αx|x>

    asked by helpless
  15. Physics

    A ball rolling on an inclined plane dors so with constant acceleration. One ball, A, is released from rest on the top of an inclined plane 18m long to reach the bottom 3s later. At the same time as A is released, another ball, B, is projected up the same

    asked by Edward.Oki
  16. Tides

    What astronomical bodies are most responsible for the tides on earth?

    asked by Stephanie
  17. chemistry

    How many grams are in 4.00mol of sodium chloride (\rm NaCl)

    asked by Dee
  18. Life orientation

    In 10-15 critically discuss 5 ways in which the human or enviromental problem impacts on the community.provide relevent sources to support your claims

    asked by Lucky
  19. Chemistry

    • Describe the properties of acids and bases and explain the concept of pH • How will you measure the pH of the soil in your garden • How will pH affect materials and equipment you might use in gardening. • 3 vegetables and 3 flowers that would

    asked by Juan
  20. Chemistry

    Ethyl alcohol which is prent in many beverages molecular formular C2H6O.If 9.2g of ethyl alcohol are available.Calculate number of molecular of ethyl alcohol 9.2g of ethyl alcohol.

    asked by Anonymous
  21. physics

    How can I calculate a person's power when bowling? I am given the ball weight, time to swing, horizontal swing distance, time to roll down lane, and the lane's length.

    asked by Shaniqua
  22. Physics

    A charge of q1=1×10−6 C is located at corner A of an equilateral triangle. A charge q2=4×10−6 C is located at corner B and a charge of q3=7×10−6 C is located at corner C. The distance AB=0.46 m (the other two sides of the triangle are the same).

    asked by Phy
  23. Please help with circle tangents geometry

    Two circles of different sizes are tangent at T. A is on the smaller circle, whereas B is on the larger one. Also, segment CD is tangent to the smaller circle, and crosses the goes through the larger circle and hits the other side at D. TD is a diameter,

    asked by Knights
  24. MATH

    SHOW THREE WAYS TO ESTIMATE 3/5 X 9 1/2. IDENTIFY EACH METHOD YOU USE.

    asked by ALEXIS
  25. MATH

    JENNA LIVES 4 3/10 MILES FROM SCHOOL. SHE ESTIMATES THAT SHE TRAVELS 4 X 2 X 5, OR 40 MILES EACH WEEK. IS HER ESTIMATE AN OVERESTIMATE OR AN UNDERESTIMATE? EXPLAIN.

    asked by ALEXIS
  26. MATH

    WHICH BENCHMARK FRACTION COULD YOU USE TO ESTIMATE THE PRODUCE OF 36 X 11/16?

    asked by ALEXIS
  27. MATH

    ESTIMATION. WHICH IS THE BEST ESTIMATE FOR THE AREA OF A SQUARE WITH SIDES EQUAL TO 4 1/8 INCHES?

    asked by ALEXIS
  28. MATH

    BRYCE HAS 24 BASEBALL TROPHES. MATT HAS 3/4 AS MANY TROPHIES AS BRYCE. HOW MANY TROPHIES DOES MATT HAVE?

    asked by ALEXIS
  29. HR

    1. List and discuss the advantages and disadvantages of off-shoring jobs.

    asked by Agnes
  30. maths

    Solve the inequality //(2x-1)(x+3)/-4/< 1 where /x/ is the modulus of x.

    asked by black_widow
  31. maths

    What is Mersenne prime?

    asked by black_widow
  32. Chemistry

    I do not understand the acid + base ->conjugate base + conjugate acid Please explain it to me with an example. I really do not understand it and I truly need your help. I do not understand how he hydrogens transfer and stuff like that. Your help is very

    asked by Krystien
  33. stats

    two factor ANOVA indep measures exper. 2 level factor A 3 level factor B n=5 in each treatment SS df ms between 240 5 factor A ? 1 ? Fa=24 factor B ? 2 ? AxB 60 2 30 within ? 24 5 are this answers right for SS A=120 B=80 w/I=120

    asked by tita
  34. CMGT/410 V13

    The company offsite 2-day training session project is about ready to enter the execution phase. However, management has a history of being surprised with projects that finished over-budget, did not adhere to the timeline, evinced waste of resources, or did

    asked by Tchangwe
  35. Physics

    The ultracentrifuge is an important tool for separating and analyzing proteins in biological research. Because of the enormous centripetal accelerations that can be achieved, the apparatus must be carefully balanced so that each sample is matched by

    asked by Leanna
  36. physics

    A compact car can achieve a maximum acceleration of 3.2 m/s^2. If dice were hanging from the rearview mirror, what angle would they swing on?

    asked by R
  37. algebra

    write and inequality describing this region. will an 18 wheeler hold 71 refrig's and 118 tv's or will it hold 51 refig's and 176 tv's?

    asked by maddie
  38. urgent urgent algebra / precalculas

    1. Given a function,H(x)explain how to find the components f(X)AND g(x) such that f(g(x)) = H(x) 2. let H(x)=(2x+5)^4 find the function f and , so that f(g(X))=H(x)

    asked by zachary
  39. Physics

    1. At what height above the earth is the free-fall acceleration 30% of its value at the surface? 2. What is the speed of a satellite orbiting at that height?

    asked by Leanna
  40. math

    please help me how to solve the integral sinx/x dx from 0 to infinite : ∫_0^∞▒〖sin⁡x/x dx〗 thank you

    asked by deel
  41. Chemistry

    Calculate the pressure of 0.800 moles of helium gas, when the gas is in a balloon with a volume of 2.30 L at a temperature of 32°C.

    asked by Debbie
  42. statistics

    solve this math statistic problem: an insurance company insures a person's antique coin collection worth $20,000 for an annual premium of $300. If the company figures that the probability of the collection being stolen is 0.002, what will be the company's

    asked by Anonymous
  43. chemistry

    what is the total heat lost if you have 8 grams of copper and the temperature changed from 43°C to 36°C

    asked by grace
  44. Physics

    Aoron leaves one cify at noon. He has to be at another city 186 km away at 3:00 p.m, the speed limit the entire wAy is 65 km/h . Can he arrive At the second city on time? Explain

    asked by Mary
  45. Physics

    Which describes the greatest displacement? - walking 3 m east then 3 m north, then 3 m west - walking 3 m north, thrn 3 m west, then 3 m south

    asked by Mary
  46. geography

    What does the word napasta mean in english?

    asked by dennis
  47. chemistry 2 college

    explain how to find the mass of solute in the solution: 50.0g of solvent in a 10.0% NaCl solution?

    asked by deedee
  48. Chemistry

    A 5.0 mL sample of HCl is placed in a flask. Titration required 15.0 mL of .20 M NaOH. What is the molarity of the HCl in the sample?

    asked by Michael
  49. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  50. Math- Calculus

    A company needs to produce a cylindrical can to hold water. It must have a volume of 500ml. The side of the can will cost 40$/m^2 to produce and the top and bottom of the can will cost 50$/m^2 to produce. Find the most economical dimensions.

    asked by John
  51. biomechanics

    Suggest how a snail and a large dog develop linear momentum.

    asked by yaya
  52. Counseling

    are there in big differences in the ACA and NCDA codes of ethics?

    asked by Lisa
  53. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  54. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  55. Math

    If a man casts 14 foot and a child casts a 9'4" shadow at the same time how tall is the man?

    asked by Shanequa
  56. deutsch

    bitte erkläre mir die wörter: eigenartige weisen schürzte seie kleider allerlei ausflüchten schwarm die Kunde Ungesäumt spielmann senkung eines hügels danke! ps: schreibe mir eine schnelle antwort!!!

    asked by priyanka
  57. Physics

    in a childrens soccer game, one of the children kicks the ball from the ground, giving it an itial velocity of 22m/s a) what height and range does the ball reach? b) How high is the ball 2.25s into flight?

    asked by Nate
  58. math

    Why do we write radian measures with a π rather than just give the decimal equivalent? (for example, why not use 1.88 rad instead of 3π/5 rad?) Thx

    asked by Adam
  59. Math

    Find the area of a circle with a radius of 8 cm. Use 3.14 for pi. Type your answer as a number only. Find the area of a triangle with a base of 6 cm and a height of 3 cm. Remember your formula. Question 4 Find the area of a figure with base #1 of 4 in.,

    asked by paragonnova
  60. accounting

    Tribke Enterprises collected the following data from its financial reports for 2012: Stock price $18.37 Inventory balance $300,000 Expenses (excluding COGS) $1,120,000 Shares outstanding 290,000 Average issue price of shares $5.00 Gross margin % 40%

    asked by Anonymous
  61. Math

    of 53 plays attributed to a playwright, 16 are comedies, 18 are tragedies, and 19 are histories. if one play is selected at random, find the odds against selecting a tragedy.

    asked by Christal
  62. physics

    As your hand moves back and forth to generate longitudinal pulses in a spiral spring, your hand completes 3.26 back-and-forth cycles every 8.31 s. The velocity of the pulse in the spring is 1.47 cm/s.

    asked by lex
  63. history

    how are harriet quimby challenges different from bessie coleman challenges

    asked by lattane
  64. physics

    The lens and mirror in the figure below are separated by d = 1.00 m and have focal lengths of +74.9 cm and -56.4 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.

    asked by Pri
  65. Algerbra

    in the equation y=4x,if the value of x is increased by by 2,what is the effect on the value of y?

    asked by Eric
  66. Biology

    Identify the molecules that participate in the light dependant reactions and tell what they do.

    asked by Math
  67. math

    After six biology tests, Ruben has a mean score of 73. What score does Ruben need on the next test to raise his average (mean) to 75?

    asked by sam
  68. math

    Mark averaged 60 miles per hour during the 30-mile trip to college. Because of heavy traffic he was able to average only 40 miles per hour during the return trip. What was Mark's average speed for the round trip?

    asked by sam
  69. algebra

    the number of gallons of water,y,after x hours maybe modeled by the linear equation y=800-50x. Which of the following statements is true, a.it is filling at a rate of 800 gallons per hour/b.it is filling at a rate of 50 gallons per hour/c.it is emptying at

    asked by Eric
  70. Algerbra

    SOLVE.8X+7=6

    asked by Eric
  71. Algerbra

    WHAT IS THE EXPRESSION THAT IS EQUIVALENT TO -3(X-2)

    asked by Eric
  72. Chemistry

    Na2CO3 reacts with H2SO4 to give respective salt water and carbon dioxide. Calculate the mass of pure salt formed when 300 g of Na2CO3 of 80% purity reacts with H2SO4

    asked by Aurab
  73. math

    A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 60, 80, and 89. Sara's quiz scores are 85, 94, 83, and 84. Her final

    asked by tommy
  74. Physics

    To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 12 cm in diameter and 45 cm in length. You would like a 2.0-A current to produce a 2.1-kG magnetic field inside your solenoid. What is the total length of wire you will need

    asked by Valerie
  75. Algebra 2

    Find the value of $1000 deposited for 8 years in an account interest compounded semiannually.

    asked by Gina
  76. Physics

    In Oersted's experiment, suppose that the compass was 0.30 m from the current-carrying wire. If a magnetic field of 1/3 the Earth's magnetic field of 5 10−5 T was required to give a noticeable deflection of the compass needle, what current must the wire

    asked by Valerie
  77. College Algerbra

    THE TEMPERATURE ON A SUMMER DAY IS // DEGREES FAHRENHEIT.the formula to convert the temperature to degrees Celsius is C = 5/9(F-32) what is the corresponding temperature in degrees Celsius?

    asked by Eric
  78. chem

    Assume that 35.0 mL of a 0.13 M solution of a weak base B that accepts one proton is titrated with a 0.13 M solution of the monoprotic strong acid HX. (a) How many moles of HX have been added at the equivalence point?

    asked by hannah
  79. College Algerbra

    Solve the inequality. - 5x / 7 -2>-1

    asked by Eric
  80. College Algerbra

    Solve the inequality. 0.1(0.1x+0.1) _< -0.8

    asked by Eric
  81. math

    how many different ways can 7 out of 18 people be picked to fit into a van

    asked by john
  82. Physics

    in a childrens soccer game, one of the children kicks the ball from the ground, giving it an itial velocity of 22m/s a) what height and range does the ball reach? b) How high is the ball 2.25s into flight?

    asked by Nate
  83. math

    how many different ways can 7 out of 18 people be picked to fit into a van

    asked by john
  84. Chemistry

    One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) ? FeCl2(aq) + H2(g); (Delta)H°= –87.9 kJ How much heat is liberated at constant pressure if 0.215 g of iron reacts with 40.4 mL of

    asked by Raul
  85. physics

    a proton (mass 1.67 x 10^-27 kg) with a velocity of 1.10 x 10 7 m/s collides with a motionless helium nucleus, and the proton bounces back with a speed of 6.00 x 10 6 m/s. The helium nucleus moves forward with a velocity of 4.00 x 10 6 m/s after the

    asked by casey
  86. Chemistry

    A solution is prepared by dissolving 0.12 mol of acetic acid and 0.12 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.

    asked by Emma
  87. UOP

    Use the value d= rt to find the variable D= 100 feet t =25 second

    asked by Algebra
  88. college math

    How many different committees can be formed from 9 teachers and 39 students if the committee consists of 2 teachers and 3 students? In how many ways can the committee of 5 members be selected?

    asked by Craig
  89. Algebra 2

    Let (x) be defined for all positive integer values of x as the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)?

    asked by Anonymous
  90. Math- Calculus

    A company offers the following charges: $54 per thousand for orders of 62000 or less with the charge per thousand decreased by 38 cents for each thousand above 62000. Find the order which will make the company's revenue a maximum.

    asked by John
  91. chemistery

    How much heat, in joules and calories, is needed to heat up 295 mL of water from 26.6 °C to 85.1 °C? Assume the density of water to be 1.00 g/mL.

    asked by dug
  92. math

    if you deposit $700 a month in a savings account that earns 4% interest compounded monthly. how many months to get $3500 and what is the balance in the account.

    asked by Anonymous
  93. statistics

    The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of the scores, a “B”

    asked by Sarah
  94. math

    a driver comes to pick up members of your family (20 members) for a family reunion. the van holds 7 people not including the driver. assuming none of the babies will be riding (2 babies in the group of 20) how many different ways can 7 people be chosen to

    asked by john
  95. english

    "A Noiseless Flash" by John Hersey? List one fiction technique and one nonficiton technique from the selection and descsribe the effects of each on readers. Please help cause I suck at this!!

    asked by ashhhhhhhhhhhh
  96. Spanish

    Verb Distinction Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish. Be sure the verb is written in correct form to agree with the subject of the sentence and also in the

    asked by RJ
  97. Math

    A company offers the following charges: $54 per thousand for orders of 62000 or less with the charge per thousand decreased by 38 cents for each thousand above 62000. Find the order which will make the company's revenue a maximum.

    asked by John
  98. chemistry

    At a certain temperature, the concentrations of NO and NH3 are equal, and the concentration of H2o and o2 are 2.0M and 3.0M respectively. What is the value of Keq at this temp? The equation is 5O2+4NH3--> 4NO+6H20

    asked by K
  99. Chemistry

    The Ka of a monoprotic weak acid is 8.11 x 10 ^ -3. What is the percent ionization of a 0.125M solution of this acid?

    asked by Joe
  100. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  101. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  102. science

    What will eventually occur if in deep space an astronaut's wrench is outside the spacecraft moving with the same velocity as the spacecraft?

    asked by anonymous
  103. decimals

    this number has 4 places to the right of the decimal point. it has 2 hundreds, 3 ten thousandths and 1 tenth. it is in between 240 and 242. the thousandths place is one less than the ten thousandths and less than the hundredths. what are the 6 numbers that

    asked by Anonymous
  104. Chemistry!!!!!! Please help immediately!!!

    Please show me step by step. Thank you. One commercial method used to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel. The concentration of NaOH is normally in the range of 3 to 6 M.

    asked by Lilyyyyyyyyyyyy!!!!
  105. Ashford

    One element generally not found in caste systems is: (Points : 1) the association of one’s social position with one’s occupation. inheritance of one’s status. equal access to wealth. prohibitions on marrying those outside one’s class.

    asked by Hope
  106. Chemistry (Immunoassays)

    What is the common component that makes a homogeneous competitive immunoassay? Describe one.

    asked by James
  107. Physics

    A vertical wall (5.3 m multiplied by 2.3 m) in a house faces due east. A uniform electric field has a magnitude of 157 N/C. This field is parallel to the ground and points 38° north of east. What is the electric flux through the wall?

    asked by Emilie
  108. stats

    How do you perform the One-way ANOVAs A researcher is interested in examining whether knowledge of a previous criminal record will affect the juryfs decision to acquit or convict the defendant. The researcher shows 15 participants a 4-hour trial in which

    asked by Anonymous
  109. Calculus/ Optimization

    A truck driver, on assignment from the owner of the truck is to drive on a 300 mile stretch of highway at a constant speed of v miles per hour. According to road signs, the minimum speed allowed is 55 miles per hour and the speed limit is 70 miles per

    asked by Marto
  110. physics

    A bird wants to rech its nest that is located 53 meters (35 degrees south of west) from where it is perched. If the maximum speed that the bird can fly with respect to the air is 12m/s and there is a wind blowing from a direction of east 35 degrees south

    asked by Kate
  111. Math

    For a chemistry experiment, Heather needs 3.75 grams of salt. How many decigrams of salt does Heather need?

    asked by Kaylee
  112. math

    if you deposit $700 a month in a savings account that earns 4% interest compounded monthly. how many months to get $3500 and what is the balance in the account.

    asked by Anonymous
  113. math

    in triangle ABC, AB = BC and ABC = 42. find ACB

    asked by angela
  114. Calculus

    A rectangular box with square base (which is NOT necessarily a cube) and NO top is to be made to contain 9 cubic feet. The material for the base costs $2 per square foot and the material for the sides $3 per square foot. Find the dimensions that minimize

    asked by Marto
  115. science 297

    chronic asthma when caused by air pollution is most likely due to

    asked by sarah
  116. story problems

    jordan made 3/5 of a recipe that called for 2 1/3 cups of sugar. how much sugar was used

    asked by Anonymous
  117. Chemistry

    Calculate both the moles and grams in each of the following? a. 6.02 x 10^23 atoms of Na e. 3.01 x 10^23 atoms of S

    asked by Matt
  118. physics

    The system shown in the figure below consists of a m1 = 5.52-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m2 = 2.76-kg block.The

    asked by Nicole
  119. Chemistry

    What do we mean when we say that concentrated nitric acid (HNO3) is 16 molar?

    asked by Tina
  120. science 207

    chronic asthms when caused by air p[ollution is ,most likely due to: short term pollutant exposer long term pollutant exposer thbe weather during an episode of pollutant expossure exposure to a cerain kind of pollutant

    asked by sarah
  121. Chemistry

    A solution is prepared by dissolving 571.6 g of H 2SO4 in enough water to make 1000.0 mL of solution. The solution has a density of 1.3294 g/mL. (molar mass of H2SO4 = 98.08). What is the molar concentration of the solution?

    asked by Bill
  122. MA 107 college algebra

    Each side of a square is lengthened by 2 inches. The area of this new, larger square is 81 square inches. Find the length of a side of the original square.

    asked by tinysong
  123. MA 107 college algebra

    Simplify the expression using the power rule.(3to the power of 2)to the power of 5

    asked by tinysong
  124. chemistry (Pls Bob check for me)

    A 0.5g of fuming h2so4 oleum is diluted with water. This solution is completedly neutralized by 26.7ml of 0.4N naoh. Find the percentage of free so3 in the sample The asnwer 20.6% My calculation h2so4= 98/2 = 49 so3= 80/2 = 40 26.7ml x 0.4N = 10.68ml -

    asked by Fai
  125. Algerbra

    Make a table of solutions for the equation, and then use the table to graph the equation. Just graph one of them. y = 2x -1 How do I make one, may I use microsoft Excel?

    asked by Eric
  126. Algebra

    At a portrait studio, three 8- by 10-inch pictures plus two 5- by -inch pictures cost $52, and two 8- by 10-inch pictures plus 5- by 7-inch pictures cost $40. This situation can represented by the system of equations below, where x is the cost, in dollars,

    asked by Stephanie
  127. math

    monica spent 8/13 hours listening to tapes of beethoven and brahms. she spent 2/5 hours listening to beethoven. how many hours were spent listenign to brahms

    asked by Heather
  128. algebra

    Will someone please help me slove this question. Completely factor the polonomial. 8x^3+16x^2+8x+16

    asked by john
  129. Trig

    prove that tanA divided by the sinA equals the secA

    asked by Dominique
  130. Algebra

    Use a graphing calculator or a computer to graph the system of inequalities. Give the coordinates of each vertex of the solution region. 5x-3y is greater than or equal to -7 x-2y is greater than or equal to 3 3x+y is greater than or equal to 9 x+5y is less

    asked by Emma
  131. algebra

    the larger leg of a right triangle is 7ft longer than its samller leg. the hypotenuse is 1ft longer than the larger leg. how many feet long is the samller leg?

    asked by jessica
  132. math

    I wold like to know if I have this answer right? Factor the trinomial competely. x^2-x-2 My answer is (x-2)(x+1)

    asked by sam
  133. algebra

    list the domain and the x- and y- intercepts of the following function. Graph the funciion. Graph the function. Be sure to label all the asymptotes.

    asked by Anonymous
  134. Stats.

    One hundred subjects in a psychological study had a mean of 35 on a test instrument designed to measure anger. The study the ó=10. Find a 99% confidence interval for the mean anger score of the population.

    asked by Christina
  135. Chemistry

    K1 = 0.727 K2 = 12.1 T1 = 2000 T2 = 3000 Solve for the standard enthalpy of formation. They gave me the formula ln(K2/K1) = DeltaH /R (T2 - T1 / T1T2) The answer is supposed to be in KJ/mol and I keep getting 2.022 but its not right. I'm not sure what Im

    asked by Katie
  136. college algebra

    determine the vertical asymptotes of the graph of function.g(x)=x^3 diveded by 5x^3-x^2-22x

    asked by Anonymous
  137. stats

    One hundred subjects in a psychological study had a mean of 35 on a test instrument designed to measure anger. The study the ó=10. Find a 99% confidence interval for the mean anger score of the population.

    asked by Christina
  138. math

    I need help with these two problems please. Completely factor the polynomial. 8x^3+16^2+8x+16 Factor the trinomial completely. y^3-14y^2+48y

    asked by ashley
  139. social studies

    What was Julius Caesar Civilization?

    asked by Anonymous
  140. Chemisry

    Potassium, a silvery metal, reacts with bromine, a corrosive, reddish liquid, to yield potassium bromide, a white solid. Write the balanced equation, and identify the oxidizing and reducing agents.

    asked by nana
  141. statistics

    The average homicide rate for the cities and towns in a state is 10 per 100,000 population with a standard deviation of 2. If the variable is normally distributed, what is the probability that a randomly selected town will have a homicide rate greater than

    asked by brittany
  142. Math- Calculus

    find the dimensions of a rectangle of maximum size that will fit into a half circle of radius 30 cm.

    asked by John
  143. calculus

    Find the integral. x^4/the square root of (x^5-1)

    asked by eve
  144. Algebra

    Use completing the square to describe the graph of the following function. Support your answer. f(x)=-2x^2+4x+1

    asked by Jenn
  145. math

    For the function f(p) an input of 3 yields an output value of 6. What value of p would you use to have f(5p) = 6?

    asked by Katie
  146. math

    Classify each statement as sometimes, always, or never true. A. 2^(2/3)*4^(4/3)=8*2^(1/3) B. If x>0, then (squareroot x*squareroot 2)^3 =x^(3/2) 2^(3/2) C. If x>0, then (squareroot x+ squareroot 2)^3 =x^(3/2) 2^(3/2) D. The only solution to x^(2/3)= 4 is

    asked by hannah
  147. economics

    Maria can read 20 pages of economics in an hour. She can also read 50 pages of sociology in an hour. She spends 5 hours per day studying. a. Draw Maria's production possibilities frontier for reading economics and sociology. b. What is Maria's oppurtunity

    asked by Bob
  148. Applied Behavioral Science

    Recognizing Culture Gaps As a leader, how might a leader recognize a culture gap? What are some techniques leaders might use to influence and change cultural values when necessary?

    asked by Samantha
  149. prcalculus

    change the logarithmic expression to an equivalent expression involving an exponent. log416=x

    asked by deanne
  150. Algebra

    Find the following function f(x)=(x+3)^2(x-1)^2 (a)Find the x and y intercept of the polynomial function f. (b) Determine whether the graph of the f crosses or touches the x-axis at each x intercept. (c) Put all the information to obtain the graph of f.

    asked by Jenn
  151. Chemistry

    calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2

    asked by Ale
  152. Chemistry

    calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2

    asked by Ale
  153. College algebra

    Find the vertical, horizontal, and qblique asymptotes, if any, for the following rational function. T(x)=x^2/x^4-256

    asked by Jenn
  154. Statistic

    A urn contains 21 red balls, 14 white balls If we randomly select 2 balls, one after the other without replacement, what is the probability that both of the balls selected are red?

    asked by Bella
  155. Statistic

    Suppose that 15 students take a quiz and everyone in the class scores an 80. The standard deviation of scores for this quiz is ____________?

    asked by Bella
  156. biology

    Why humans not evolve with one central repository of DNA rather than having it replicated throughout the body?

    asked by Jazlee
  157. math

    third-degree polynomial with real coefficients -4 -3

    asked by Anonymous
  158. Statistic

    Below are listed the numbers of doctors in various specialties by gender. Pathology Pediatric Psychiatry Male 12,575 33,020 27,803 Female 5,604 33,351 12,292 Choose 1 doctor at random. (a) Find the probability of choosing a Pathologist or a female? b.)

    asked by Bella
  159. Math (Number Theory)

    If a,b, and c are non-zero reals such that a + b + c = 11, and 1/a + 1/b + 1/c = 0, what is the value of a^2 + b^2 + c^2?

    asked by Hale
  160. math

    The monthly demand function for a product sold by a monopoly is p = 3750 − 1/3x^2 dollars, and the average cost is C = 1000 + 70x + 3x^2 dollars. Production is limited to 1000 units and x is in hundreds of units. (a) Find the quantity that will give

    asked by Sarah
  161. trig

    Find the first two terms a_1 =5 and an=3a _n-1+2

    asked by veronica
  162. stats

    A study by Hewitt Associates showed that 79% of companies offer employees flexible scheduling. Suppose a researcher believes that in accounting firms this figure is lower. The researcher randomly selects 415 accounting firms and through interviews

    asked by John Barclaey
  163. math

    Can you show me how to solve this using logarithims? thank you 3e^-3x = 10.21 for x.

    asked by toni
  164. Math

    Determine the number of subsets of A={1,2,…,10} whose sum of elements are greater than or equal to 28.

    asked by Carlos
  165. Algebra

    Can someone please help me with a couple questions? 1)The probability that a dessert sold at a certain cafe contains chocolate is 73%. The probability that a dessert containing chocolate also contains nuts is 25%. Find the probability that a dessert at

    asked by Lee
  166. math

    A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 60, 80, and 89. Sara's quiz scores are 85, 94, 83, and 84. Her final

    asked by lisa
  167. Math

    For the angle shown is a point given on its terminal arm. [picture shows -12, -5 in quadrant three of the it circle]. Calculate the values of the three primary trigonmetric ratios, accurate to four decimal places.

    asked by Laurian
  168. physics

    A car traveling at 150 miles/hour strikes a wall and bounces backwards at 30 miles/hour. If the car is in contact with the wall for 0.1 seconds, what is the force that the car exerts on the driver.

    asked by robert
  169. Algebra 2

    How do i find the answer to 1/9-1/x divided by 1/81-1/x^2

    asked by Ryleigh
  170. Math/ Calculus Please HELP!!!

    A truck driver, on assignment from the owner of the truck is to drive on a 300 mile stretch of highway at a constant speed of v miles per hour. According to road signs, the minimum speed allowed is 55 miles per hour and the speed limit is 70 miles per

    asked by Chris
  171. Math HELP

    For the angle shown is a point given on its terminal arm. [picture shows -12, -5 in quadrant three of the unit circle]. Calculate the values of the three primary trigonmetric ratios, accurate to four decimal places. Dont understand thissss

    asked by Laurian
  172. general chemistry

    KCl crystallizes in a structure like NaCl. The ionic radius of Na+ is 0.525 times the ionic radius of Cl^- and 0.714 times the ionic radius of K+. What is the ratio of the density of NaCl to that of KCl?

    asked by StressedStudent
  173. College Physics

    A child's toy consists of a toy car of mass 0.100kg which is able to roll without friction on the loop-the-loop track shown. The car is accelerated from rest by pushing it with force F over a distance d, then the car slides with a constant velocity until

    asked by C
  174. math

    It cost $20 to replace an air filter on a $20,000 car. What percent of the cars value is the price of the air filter?

    asked by diarra
  175. inequality

    solve the inequality (x+8)^2(x-4) > 0

    asked by Jenn
  176. statistics

    the manufacturer of a popular brand of tv set claims that 95 percent of its sets last at least 5 years without requiring a single repair. a sample of 8 purchasers of these tv sets was selected at random from a list of purchasers five years earlier. use

    asked by afiba
  177. general chemistry

    What is the radius of the largest sphere that can be placed at the center of a face-centered cubic unit cell of a cubic closest-packed array of spheres if the spheres have radius of 2.0 x 10^2 pm?

    asked by StressedStudent
  178. Chemistry

    Assuming that the smallest measurable wavelength in an experiment is 0.410 fm (femtometers), what is the maximum mass of an object traveling at 395 m·s–1 for which the de Broglie wavelength is observable?

    asked by marie darling
  179. Solve the inequality

    Solve the inequality x^2(8+x)(x-9)/(x+4)(x-7) is greater than or equal to 0?

    asked by Jenn
  180. Chemistry

    The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 5.48 × 1014 s–1. With what kinetic energy will

    asked by marie darling
  181. phi 208 ethics and moral

    The First Cause argument for the existence of God assumes that

    asked by tone
  182. Using the remainder

    use the remainder theorem to find the remainder when f(x) is divided by x - 3. Then use the factor theorem to determine whether x-3 is a factor of f(x) f(x)=2x^3-10x^2+11x+12

    asked by Jenn
  183. chemistry

    If 3.12 kg of S are reacted with oxygen calculate the volume of SO2 gas in mL formed at 35 degrees Celsius and 1.09 atm

    asked by jane
  184. chemistry

    calculate the mass in grams of hydrogen chloride produced when 5.25 L of a molecular hydrogen measured at STP reacts with an excess of molecular chlorine gas

    asked by jane
  185. Science

    A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in

    asked by Salando
  186. Science

    A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in

    asked by Salando
  187. Science

    A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in

    asked by Salando
  188. Chemistry

    For each electron in a ground-state Be atom, select the set of quantum numbers that represents it. Check all that apply. n=1 l=0 ml=-1 ms= +1/2 n=1 l=0 ml=0 ms=-1/2 n=2 l=1 ml=0 ms= -1/2 n=1 l=0 ml=0 ms=+1/2 n=2 l=1 ml=1 ms=+1/2 n=2 1=0 ml=0 ms=+1/2 n=2

    asked by Anonymous
  189. Chemistry

    For each electron in a ground-state Be atom, select the set of quantum numbers that represents it. Check all that apply. n=1 l=0 ml=-1 ms= +1/2 n=1 l=0 ml=0 ms=-1/2 n=2 l=1 ml=0 ms= -1/2 n=1 l=0 ml=0 ms=+1/2 n=2 l=1 ml=1 ms=+1/2 n=2 1=0 ml=0 ms=+1/2 n=2

    asked by Anonymous
  190. Calculus 2

    Find the arclength of y=x^3/3+1/(4x) from 1 to 2. I know that arclength is the integral from 1 to 2 of the sqrt of (1 + (y')^2)dx, but have not been able to figure out how to evaluate the integral. Your help is much appreciated!

    asked by Heather
  191. Dynamics

    The 10 kg block shown is released from rest on the horizontal surface at point B, where the spring has been stretched a distance of 0.5 m from its neutral position A. The coefficient of kinetic friction between the block and the plane is 0.30. Calculate

    asked by Brandon
  192. Chemistry

    The energy levels of one-electron ions are given by the equation: En=(-2.18*10^(-18)J)(Z^2/n^2) The series in the He spectrum that corresponds to the set of transitions where the electron falls from a higher level to the nf = 4 state is called the

    asked by Anonymous
  193. Chemistry

    Which of the following electron configurations of neutral atoms represent excited states? [Xe]6s^2 4f^1 [Ar]4s^2 3d^3 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 [Kr]5s^1 4d^5 2s^2 Which neutral atoms have the following electron configurations? Enter the name or symbol.

    asked by Anonymous