Questions Asked on
April 3, 2013

  1. MAH

    CHAD BUYS PEANUTS IN 2-POUND BAGS. HE REPACKAGES THEM INTO BAGS THAT HOLD 5/6 POUNDS OF PEANUTS. HOW MANY 2-POUND BAGS OF PENUTS SHOULD CHAD BUY SO THAT HE CAN FILL THE 5/6 POUND BAGS WITHOUT HAVING ANY PEANUTS LEFT OVER?

    asked by JAY
  2. math

    why is 1/6 greater than 1/8 but less than 1/3? EXPLAIN

    asked by IRIN
  3. Math, Mathematics

    A bag contains tiles with the letters P-R-O-B-A-B-I-L-I-T-Y. Tyler chooses a tile without looking and doesn’t replace it. He chooses a second tile without looking. What is the probability that he will choose the letter I both times?

    asked by Probability Math
  4. Ms. Sue or Steve Help

    17. Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2

    asked by Jman
  5. Chemistry

    Calculate the heat released when 454 g of steam at 100.0C condenses and then cools to 30.0C. State your answer in calories.

    asked by Ray
  6. math

    PLEASE HELP!!!(: There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow). (1 point) A. 400 over 900 B. 5 over 30 C. 8 over 30 D. 40 over 870

    asked by mckayela
  7. Chemistry

    Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions: a. .050 M NH3/.15 M NH4Cl b. .5 M NH3/ 1.5 M NH4Cl

    asked by Joyy
  8. Math

    "Jack has a collection of nickels and quarters. He has a total of 50 coins worth $10.30. How many of each coin does he have?" I got the answer of 39 quarters and 11 nickels by trial and error. Can someone tell me the correct way to set the problem up?

    asked by Joci
  9. Biochem

    What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? Condition: A cell-free yeast extract is placed in a solution that contains 3.50 × 102 mmol glucose, 0.30 mmol ADP, 0.30 mmol Pi,

    asked by Mark
  10. Alg 1

    A golden rectangle is 32 cm long. The ratio of length to width is (1 + sq rt 5)/2. What is the width of the rectangle in simplest radical form? Please solve and explain. Thanks.

    asked by Jane
  11. Math

    A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?

    asked by Barb
  12. math

    Two fair dice, one blue and one red, are tossed, and the up face on each die is recorded. Define the following events: E : { The sum of the numbers is even } F : { The numbers are equal } Find the following probabilities: (a) P(E) = (b) P(F) = (c) P(E|F) =

    asked by urgentneedhelp
  13. Solid Mensuration

    A spherical wooden ball 1 ft in diameter is used as a float for a boat. If the ball sinks to a depth of 7 inches, find the area of the wetted surface.

    asked by G
  14. physics

    A copper cube, 0.31 m on a side, is subjected to two shearing forces, each which has a magnitude F = 6.40 106 N (see the drawing). Find the angle θ (in degrees), which is one measure of how the shape of the block has been altered by shear deformation.

    asked by Dee
  15. Programming and Design

    Draw the hierarchy chart and design the logic for a program that calculates the projected cost of an automobile trip. Assume that the user's car travels 20 miles per gallon of gas. Design a program that prompts the user for a number of miles driven and a

    asked by Matt
  16. AP Chem

    Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions: a. .050 M NH3/.15 M NH4Cl b. .5 M NH3/ 1.5 M NH4Cl

    asked by Kristen
  17. AP CHEMISTRY

    30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20 M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions has the lowest concentration in the final solution? A) Na+ B) NO3- C) Ca+2 D) PO4-3 Answer is C.. How do you solve it though?!

    asked by Ash
  18. Statstistics

    Chicken Delight claims that 91% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 90 orders revealed that 75 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than

    asked by John
  19. Chemistry

    What effect on the molar mass of the unknown acid would each of the following have-that is-would it make the calculated molar mass high, low, or would it have no effect? 1. Adding 5 drops of phenolphthalein instead of 1 drop. 2. Using a standard NaOH

    asked by Sean
  20. Math

    A goat is tethered (tied up) to a stake in the ground with a 5 m rope. The goat can graze to the full length of the rope a full 360 around the stake. How much area does the goat have in which to graze?

    asked by Taliea
  21. Chemistry

    How many joules of energy are needed to change 275 g of water from 15°C to steam at 100.°C?

    asked by B
  22. Physic 30

    INFORMATION: Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the car is 2800 kg. Based on the length of the skid marks at the scene and the mass of the vehicles, police estimate that the

    asked by Tori
  23. calculus optimization problem

    by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. if the cardboard is 30 inches long and 14 inches wide find the dimensions of the box that will yield the

    asked by sasha
  24. Reading

    Why does Douglass think the songs that slaves sing on their way to the Great House Farm "would do more to impress some minds with the horrible character of slavery, than the reading of whole volumes of philosophy on the subject could do?"

    asked by Jees
  25. General Chemistry

    Balance the following redox reaction in acidic and basic solutions: Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my instructor gave us to balance redox reactions: 1. Divide into 1/2 rxns (reduction & oxidation) 2. Balance atoms other than H & O 3.

    asked by Emily
  26. math

    The school parking lot had room for thirty cars. If all the spaces except six were filled, what fraction of the parking lot was in use? If Mrs. Johnson parks in one of the empty spaces, how does the fraction change? Please answer and explain.

    asked by Anonymous
  27. physics

    A large building has an inclined roof. The length of the roof is 69.5 m and the angle of the roof is 18.0° below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the

    asked by Anonymous
  28. english

    Which word or phrase is an appositive in the sentence? When Sandy met John—a scientist and critic—she fell in love with him.

    asked by selena
  29. physics

    A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.4 m and its radius is 58 cm. When an object is placed on top of the cylinder, the cylinder compresses by an amount of 5.9 10-7 m. What is the

    asked by Dee
  30. chemistry

    A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The mass was reduce to 7.58g. What is the formula of the hydrated?

    asked by mulaudzi
  31. Triangle inequality?

    Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer? I tried using the triangle inequality but to no avail...how would I do this?

    asked by Knights
  32. 3rd Grade Math

    What is the sum of 4/10 and 55/100

    asked by Gillian
  33. math

    how much would adam have to deposit in a saving account to earn 100 dollars in interest over 4 years at 5% simple annual interest rate.

    asked by jay
  34. PHYSICS

    A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.2 × 1010 kg·m/s. What does the observer measure

    asked by please help
  35. Chemistry

    2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) ΔH° = -1199 kJ How many kilojoules are liberated by the combustion of 56.4 g of methanol?

    asked by Victoria
  36. L.O

    DISCUSS FIVE WAYS IN WHICH THE HUMAN OR ENVIROMENTAL PROBLEM IMPACTS ON THE COMMUNITY

    asked by THANDI
  37. Chemistry

    At 298 K, deltaGo = - 6.36 kJ for the reaction: 2N2O(g) + 3O2(g) ↔ 2N2O4(g) Calculate deltaG (in kJ) at 298 K when PN2O = 3.12 atm, PO2 = 0.0081 atm, and PN2O4= 0.515 Calculate deltaG (in kJ) at 298 K for some solid ZnF2, 0.025 M Zn2+ and 0.038 M F-(aq).

    asked by Anonymous
  38. chemistry

    A student used 5.06g of copper sulphate pentahydrate and salicyclic acid in the performance of the experiment. The student recovered 3.094g of salicyclic acid and 2.146g of copper sulphate pentahydrate. What is wrong with the student's result? How might

    asked by damola
  39. math

    The sides of a rectangle are in a ratio. What is the length of the shorter sides of the rectangle if its perimeter is 42 cm?

    asked by Anonymous
  40. math

    Make a table and graph the function: Yards are a function of feet.

    asked by Gingercorb
  41. Trigonometry

    How do you find the exact value of cos -7pi/12 without using a calculator to change radian to degree

    asked by Anonymous
  42. Math

    Maria has a slice of pizza that is 1/6 of the pizza. Ben has a slice of pizza that is 1/3 of the pizza. Maria's slice is bigger. Draw pizzas to show how this is possible.

    asked by Bralyn
  43. Analytic Geometry - Circles and Areas

    Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and R4. Let [Ri] denote the area of region Ri. If [R1]>[R2]>[R3]>[R4] , then compute [R1]-[R2]-[R3]+[R4]. Could someone help me, I

    asked by Knights
  44. chemistry

    In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the temperature of the solution to rise from 21.13 °C to 24.26 °C. If the solution has the same density and specific heat as water,

    asked by Lyndzey
  45. college algebra

    At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit

    asked by Anonymous
  46. Physics

    a 2.0 kg block moving at 8 m/s on a frictionless surface collides elastically with a block at rest. The first block moves in the same direction at 2 m/s. What is the second block's mass?

    asked by Henry
  47. Alg 1

    Operations with radical expressions: Simplify each quotient 7/sq rt 2 - sq rt 3 Please solve and explain how you did it. What do you do when the denominator is a negative?

    asked by Jane
  48. Chemistry

    How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

    asked by Cody
  49. poetry

    can u help me with a an acrostic poem for nervous system?

    asked by mia
  50. Chemistry

    For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g +  it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this

    asked by Jerry
  51. chem

    Calcium metal and water produce hydrogen gas. If the volume of wet gas collected over water is 95.0 mL at 20 °C and 758 mm Hg, what is the volume of dry gas at STP conditions? (The vapor pressure of water at 20 °C is 17.5 mm Hg.)

    asked by nurse
  52. Math

    30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?

    asked by Barb
  53. precalculus

    Evaluate cos(sin^(-1)(1/11)), giving your answer as an exact value (no decimals)

    asked by Anonymous
  54. chemistry

    A generic salt, AB, has a molar mass of 313 g/mol and a solubility of 4.30 g/L at 25 °C. What is the Ksp of this salt at 25 °C?

    asked by Lucky
  55. math

    The circumference of a basketball is 26 inches. What is the approximate diameter of a basketball? (Use 3.14 for .)

    asked by samantha
  56. Chemistry

    2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required ? I am not sure weather " 2.00 L " is my V1 or V2 .

    asked by Jessica
  57. life orientation

    what is a human and social factors that cause ill-health,sickness,trauma,accidents,crises and disasters within the context of a local contemporary environmenta issue

    asked by lindokuhle mazibuko
  58. Math

    A carpenter agrees to work under the conditions that he is to be paid $5.50 every day he works, but must pay $6.60 every day he does not work. At the end of 30 days he finds he has paid out as much as he has received. How may days did he work?

    asked by Barb
  59. Physics

    Find the density of a 5.8- solid cylinder that is 15 cm tall with a radius of 5.0 .

    asked by Ericca
  60. physics

    A 1.2kg object is placed on a frictionless table and is attached to a hanging mass using a light string over a frictionless pulley in a fletcher's trolley arrangement. The 1.20kg object accelerates along the table at 2.31m/s while the hanging object

    asked by maddi
  61. chem

    Express the second law of thermodynamics as a mathematical equation. (Select all that apply.) For a reversible process, ÄSuniverse = 0. For a spontaneous process, ÄSuniverse > 0. For a spontaneous process, ÄSuniverse = 0. For a reversible process,

    asked by hannah
  62. Chemistry

    The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.

    asked by B
  63. Chemistry

    Express 798 mm Hg in units of atm

    asked by Tiaira
  64. Please help me!!!! maths

    Solve for x: log5(x-2)+log8(x-4) = log6(x-1). I do not have any idea on this topic.

    asked by Seth
  65. english

    Both _____ computers were purchased with special academic pricing. (Points : 1) students’ student’s students

    asked by Anonymous
  66. math

    Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of the second piece of rope. Please answer and explain.

    asked by Anonymous
  67. Math Help please!

    Find the area under the standard normal distribution curve for the following z-values: a. Between z= 0 and z = 2.01 b. Between z = 0 and z = -0.32 c. To the left of z = -0.73 d. To the right of z = 0.32

    asked by Luna
  68. physics

    Romeo is trying to climb a ladder placed 3 meters away from a 4 meter high tower where Juliet is stuck. He weighs 110 kg, the ladder weighs 25 kg. Can Romeo climb to the top of the ladder? If so, can he bring Juliet back down with him?

    asked by Suzie
  69. math

    (6p + 4q)(-2p + 9q) simplify help

    asked by Boobear
  70. science

    A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The mass was reduce to 7.58g. What is the formula of the hydrated?

    asked by mulaudzi
  71. east brainerd elementary

    Explain It Each video game at an arcade requires 55 tokens. Tom has 100 tokens. He said he can play 2 games. Is he correct? Explain.

    asked by Latha
  72. Math

    What is the rotational symmetry as a fraction of a turn and the angle of the smallest turn of letter I

    asked by Jay
  73. calculas

    Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

    asked by mathews
  74. Okay Last Q's For today Ms. Sue MAth

    There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. 2. A number cube with the numbers 1 through 6

    asked by jman
  75. colag

    use the rational zero theorem and descartes’ rule of signs to assist you in finding all real and imaginary roots for x^4+2^3-3x^2-4x+4=0

    asked by Anonymous
  76. calculas

    Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

    asked by mathews
  77. Chemistry

    the pressure in a 10.0 L cylinder is raised from 483 mm Hg to 762 mm Hg. What is the new volume?

    asked by Angel
  78. Calculus

    If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 - 120x^2 + 500 for 0 _< x _< 100, a. Sketch the graphs of the functions R(x)

    asked by Wiz
  79. math

    Am I missing something here. They way I read this is that the answer is already given 9.5m. or are they after the angle of the ground to guy wire? The guy wire is 13.4m long. It supports a vertical power pole. The wire is fastened to the ground 9,5m from

    asked by Rose
  80. Math

    There are 18 green blocks in a bag. THere are 3 white blocks for every 2 green blocks. Which proportion can be used to find w the total number of white blocks in the bag A.18/w=3/2 B.3/8=2/w C.18/w=2/3 D.2/3=w/18 C JEremy drinks 2 pints of milk every 3

    asked by Jerald
  81. maths

    Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|

    asked by rohit
  82. algebra

    Rebecca drinks at least 7 cups of water each day. So far,she drank 1.5 cups. She will drink the rest of her water from a bottle that holds 1.5 cups. Write an inequality for the minimum number of bottles of water she will drink.

    asked by Anonymous
  83. chemistry

    Determine the radius of the largest atom that can be accommodated in the interstices of BCC iron (Fe) without stress. (Hint: the center of the largest site is at ½, ¼, 0; draw a unit cell - it helps.)

    asked by adex
  84. geometry

    Which quadrilaterals have 2 pairs of parallel sides?

    asked by Ms.Vargas
  85. college algebra

    Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks

    asked by Anonymous
  86. chemestry please check my anwer.

    1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.

    asked by asap
  87. grammar please help!

    3. The sun shines more brightly at noon than at dusk. a. Change more to most . b. Change brightly to brighter . c. Change more brightly to brightlier . d. Make no change

    asked by Billy C.
  88. Alg 3

    Put the following equations in standard form. State the center and the radius. x^2-5x+y^2+4y=-3 I get how to end up with (-2.5,2), what is the radius?

    asked by Shelby
  89. chemestry please check my anwers.

    1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.

    asked by asap
  90. Physics

    What is the minimum height you would have to place a solid ball of mass M and radius R (I=2MR^2/5) on a hill in order for the ball to make it completely around a circular loop at the bottom of the hill? The diameter of the loop is D. Assume the ball rolls

    asked by Suzy
  91. calculas

    Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

    asked by mathews
  92. Last proof read

    Sorry for bugging you guys.. But can someone proof read this paragraph. Ohio Sen. Rob Portman is the first Republican senator to endorse same-sex marriage. Portman changed his views on same-sex marriage once he learned his son is gay. " I want all my

    asked by Blaze
  93. Algebra

    I have a few problems I need some help with. The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the bottom n=1 and to the right (7-2n) 2. The next question is find a10 for an arithmetic sequence with a1=6 and d=10 3. Find the

    asked by Jess
  94. Math-Calculus

    Consider two ships which are joined by a cable attached to each ship at the water line. Suppose the two ships are 200 metres apart, with the cable stretched tight and attached to a pulley which is anchored halfway between the ships at a depth of 45 metres.

    asked by Zoe
  95. chemistry

    Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.

    asked by kelli
  96. Roman Numerals

    1. XVIII+XXII=35 2.VI+XIX=25 3.M-CC=900 4.LXXXIV-XLII=44 5.VI x XI=66 6.X x V x I=50 7.C/XX=5 8.XC/VI=30

    asked by Jerald
  97. math

    the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is 7.25 in greater than the first side what is the length of the longest side of the triangle?

    asked by chris
  98. Chemistry

    i am not understanding how to solve this how many moles of gas are present in a sample that is at 756 mm Hg pressure, has a volume of 5.3 L, and a temperature of 38 degrees C?

    asked by Angel
  99. maths-

    The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

    asked by anoynomous
  100. MATH

    An engineering consultant bids on jobs where he can make $10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4

    asked by Dominika
  101. Calculus

    If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 ¨C 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

    asked by Wiz
  102. chemistry

    what is the boiling point of a solution of .01 mole of glucose(C6H22o6) in 200 g of water. kb=0.512C/m.

    asked by PARKER
  103. Chemistry

    What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?

    asked by Amanda
  104. Science

    Define mass How much something weighs Define volume The amount of space in something Define density and show the formula for calculating density The amount of mass or matter in an object D=M/V

    asked by Jerald
  105. C++ programming

    write a program C++ program and Use a recursive function that finds the n-th term using the following rule: tn=3tn-1+12tn-2 . please help me out!

    asked by Riana
  106. history

    what were the five key points of henry clay's compromise of 1850? someone please help me and this is a 7th grade history question by the way....

    asked by lola
  107. Grammar PLease Check MY answers!

    Is there a mistake with the superlative adverb? 1. Thomas sauntered casuallyier to the podium and waited. a. Change casuallyier to most casually . b. Change casuallyier to casualiest . c. Change casuallyier to more casuallyier . d. Make no change. 2..

    asked by Mandie
  108. statistics

    ER promises you will be seen in 10 minutes. the standard deviation is 2 minutes. chance someone will wait more than 13 minutes. i don't know what to do without a population size or sample size

    asked by K
  109. Economics

    What is the concept of the invisible hand?

    asked by Linda
  110. math

    A diagram shows the design of the 12 in quilt (12" x 12") block that a quilter is sewing. What are the dimensions of each triangle in the quilt block? What are the dimensions of each triangle to the nearest tenth of an inch?

    asked by Jane
  111. Algebra

    We are studying quadratic functions. Suppose you have 80 feet of fence to enclose a rectangular garden. The function A= 40x-x2 gives you the area of the garden in square feet where x is the width in feet. What width gives you the maximum gardening area?

    asked by Britney
  112. geometry

    A board on the wall in Jeremy's class has 4 right angles, 4 equal sides, and 2 pairs of parallel sides. Which quadrilateral is it?

    asked by Ms.Vargas
  113. math

    What is 3 fracture each fourth...5 fracture each half...3 fracture each third?

    asked by ba
  114. physics

    An elevator was design to transport 13 passenger between floor of a ten story building. The unloaded elevator car weighs 1050kg. Assuming tha the average passengers weighs 70kg,determine the weight of the counter weight.

    asked by Anonymous
  115. English

    The classroom has 10 short/low chirs, 10 tall/high chairs, 10 small desks, 10 big desks, 5 windows, and 20 lockers. (Did I use correct adjectives? Would you check them?)

    asked by rfvv
  116. math

    Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the !@#$%^&tion p(x)= ACos(wx)+B that that gives the altitude in ft when the

    asked by momo
  117. 7th Grade Language Arts

    While reading Rudyard Kipling's poem "If," Fred imagined that the speaker was talking directly to him. This reading strategy is called (1 point) connecting. evaluating. interpreting. summarizing. My Answer: 1) A

    asked by Gabby
  118. Computer Literacy

    A strong search strategy for a search engine would include which of the following?

    asked by Anonymous
  119. math

    (6p + 4q)(-2p + 9q) simplify please help

    asked by Boobear
  120. Science

    Why does changing the shape of an object have no effect on the density of that object? Because it's still the same item all you did is change how it looks. The mass and matter stays in the object. Is this correct

    asked by Jerald
  121. english

    we had to take a stand on gay marriage.. can you proofread my opening and help me with revising if necessary? Same-sex marriage should be legalized because it is uncivilized to deny gay people a civil right that the Constitution guarantees everyone,

    asked by Blaze
  122. Math

    The table below shows the relationship between the number of dozens and the number of cookies Number of dozens Number of cookies 5 60 7 84 9 108 1 132 Which equation could be used to find n, the number of cookies in d, the number of dozens A.n=10d B.n=d/10

    asked by Jerald
  123. World History

    How were the Byzantine's Engineering geniuses? Take two or three of their engineering feats and discuss how these marvels led to the empire's overall success.

    asked by Gregory
  124. Quantum Physics

    The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae^(−|x|/2d). Given that the particle must be found somewhere in the range x∈[−∞,∞], the born rule then places a constraint on the modulus of

    asked by qwerty
  125. Math

    1.There are 240 boxes of caramel popcorn on the grocery store shelf. IF 2 out of every 15 boxes contain a secret decoer ring as a prize how many boxes can be expected to contain a secret decoder ring? A.30 B.24 C.16 D.32 C 2.The ratio of green tiles to

    asked by Jerald
  126. math

    32 subjects in a study were recruited by advertisements to participate in a study of attitudes and values toward wine. What assumption are you making about these subjects? (I noticed that the problem does not state it is a SRS.)

    asked by AJ
  127. maths- urgent

    The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

    asked by anoynomous
  128. conceptual physics

    If you mix a container of water in which the temperatures are 20 degrees Celsius and 24 degrees Celsius what would the temperature result be?

    asked by Mia
  129. Math

    1.There are 240 boxes of caramel popcorn on the grocery store shelf. IF 2 out of every 15 boxes contain a secret decoer ring as a prize how many boxes can be expected to contain a secret decoder ring? A.30 B.24 C.16 D.32 D

    asked by Jerald
  130. Mathematics

    Find the work done in moving a particle along the quadrant circle that has radius 2, going from A = (2, 0) to B = (0, 2) in the x-y plane through the force field F given by: F = (x - y)i + (x)j No diagram sorry, but the information provided does allow for

    asked by Blueberry Tuffin
  131. chemistry

    (a) Calculate the lattice constant a in palladium(Pd) . Use only the information available in the class Periodic Table, and express your answer in angstroms.

    asked by Anonymous
  132. math

    It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the nearest point on a straight, paved road. Down the road 16km is a power plant in which a band of international terrorists has placed a

    asked by lucy
  133. to ms sue

    Can you just get me started on my math plz

    asked by Jman
  134. Roman Numerals

    9. XLIV+XXXIX=83 10.DCLXXII+CCCXCI=1063 1.D-CLXV=335 12.C-XX=80 13.XV x V=75 14.VIII x XXX+240 15.MM/L=22 16.XLII/VII=6

    asked by Jerald
  135. Chem

    Calculate the equilibrium constant at 24 K for a reaction with ΔHo = 10 kJ and ΔSo = (-100) J/K. (Don't round unil the end. Using the exponent enlarges any round-off error.) i got g to be 12.4. What else do i do?

    asked by Anonymous
  136. math

    What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4

    asked by joe
  137. math

    tan^-1a+tan^-1b+tan^-1c=pi,yhen prove that a+b+c=abc

    asked by hasee
  138. math check my answers

    1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

    asked by kathryn
  139. college algebra

    At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit

    asked by Anonymous
  140. ???

    Why does my neck lean towards the right more? It makes my head not straight either

    asked by Anonymous
  141. ON SCIENCE!!

    How many pairs of homologous chromosomes would be in an offspring? Please give me an answer not a link to another website. Thanks.

    asked by HELLPP MEE
  142. Algebra

    I have 3 questions I'm stuck on and would love for someone to explain and show me how to solve them so I can also solve the other one. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75. 3.

    asked by Jess
  143. physics

    Generally speaking, what is the distance between the oscillator and the wave stopper necessary to produce a standing wave?

    asked by Anonymous
  144. precalculus PLEASE HELP!!

    Find a simplified expression for cos(tan^(-1)(x/5)) Evaluate cos(sin^(-1)(1/11)), giving your answer as an exact value (no decimals)

    asked by Anonymous
  145. World History

    To say crusade in arabic means something awful compared to saying crusade in English, which means symply "an adventure or mission possibly of a religious manner

    asked by Gregory
  146. Help!!!! math

    An hiking group wanted to travel a long chapter of the Appalachian Trail for 4 days. They planned to hike 6 hours per day and wanted to complete a trail chapter that was 60 miles long. what rate of speed would they have to average to complete the trail

    asked by Seth
  147. Billing and Coding

    Define and discuss the relationship between patient registration, the hospital chargemaster, coding systems and reimbursement

    asked by Cyndi
  148. algebra

    Rebecca drinks at least 7 cups of water each day. So far,she drank 1.5 cups. She will drink the rest of her water from a bottle that holds 1.5 cups. Write an inequality for the minimum number of bottles of water she will drink.

    asked by Anonymous
  149. English

    If you answer the question correctly/correct, you will receive a point card which is the same as one point. If you answer the question wrongly/wrong, you won't get a point card. After you get the point card, wirte down your name and number on the back on

    asked by rfvv
  150. Math (Percentage)

    In a class of 40 , 12 students failed the exam. What was the passing rate of the said class?

    asked by Mark
  151. Statistics

    How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?

    asked by C
  152. math

    divide and simplify a-b/2a divide a^2-b^2/8a^3

    asked by luz
  153. math

    (3p^2-6pq+7q^2)-(5p^2-10pq+11q^2)

    asked by luz
  154. English

    What do stage directions tell the reader? Do they tell about characterization or about the setting?

    asked by K
  155. STAT

    A population has a standard deviation ó of 23 units. (Give your answers correct to two decimal places.) (a) Find the standard error for the mean if n = 11. (b) Find the standard error for the mean if n = 41. (c) Find the standard error for the mean if n =

    asked by Jane
  156. physics

    2 balss,one of iron and the other of aluminium,will experience the same upthrust, when dipped in water when both have equal what?

    asked by ghutam
  157. Honors Chemistry

    what volume of solution does a 3.0 molar solution need to have in order to contain 1.8 moles of sodium sulfate?

    asked by Erin
  158. Math

    The function r(w) = 2aw-2 + b + c where a, b and c are constants. You are given that r(1) = 5; r’(4) = 12 and r′’(2) = 18. By substituting for w in the above function and its derivatives or otherwise, show that the three given function values give

    asked by Krisi
  159. math statistic

    The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

    asked by Evie
  160. Please Help!!!! Maths

    How long will it take for a $3000 savings account to double its value at a simple interest rate of 10%?

    asked by Jeconiah
  161. Math (Algebra)

    A jar contains x nickels and y quarters only. What percentage of the total number of coins are quarters?

    asked by Mark
  162. Calculus

    If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 ¨C 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

    asked by Wiz
  163. help/opinion

    I don't know if you guys will be able to help me with this.. but being that Sen Rob Portman is backing same- sex marriage since his son came out, could that be seen as like hypocritical, or more so ideological, being that it's now personal?

    asked by Blaze
  164. math

    Assume that aclass room is arectangular box where the floor is 8metres long and 6metres wide.If the distance from the floor to the ceiling(height of the room)is 3metres,find the diagonal distance between acorner of the room on the floor and the opposite

    asked by Abdulaziz
  165. Phyiscs

    A 40,000 kg jet has a force of 3.9×10^3 newtons. what is the acceleration of the jet

    asked by Nate
  166. Science

    A jet aircraft is traveling at Mach 2.5 through air at 1 °C. What is the jet's speed in m/sec? I can do the equation myself, I just need to know what equation I need to do in order to find the answer.

    asked by Elisabeth
  167. Precalculus

    Verify the identities. Cos^2x - sin^2x = 2cos^2x - 1 When verifying identities, can I work on both side? Ex. 1 - sin^2x - sin^2x = 1 - 2sin^2x 1 - 2sin^2x = 1 - 2sin^2x

    asked by Shadow
  168. math sale taxes

    Eva is making copies of her choir's performance schedule. The total bill for the copies Eva made came to $48.00 plus 8% tax. How much tax did she pay?

    asked by Paige
  169. Trig

    Sin^2 b(1 +cot^2 b) =1

    asked by Tay
  170. Alg 1

    Find the exact solution for each equation. Find the approximate solution to the nearest tenth. 5 sq rt 2/ sq rt 2 -1 = x / sq rt 2 Please explain in detail how to work this. I am really confused. Thanks

    asked by Jane
  171. Cal

    Find the critical number of the function. g(t) = | 4t - 9 |

    asked by Dee
  172. math

    three frinds are sharing 36 cookies . jerry wants 25% of the cokies , gary wants 1/2 of the cookies and terry wants o.75 of the cookies . how many cookies does each person want? can they get what they want ? explain your answer

    asked by estefhany
  173. math

    Operations with radical expressions: Simplify each quotient. -3/sq rt 2 + sq rt 5

    asked by Jane
  174. Alg 1

    Find the exact solution for each equaton. Find the approximate solution to the nearest tenth. 3 sq rt 3/sq rt 1 + sq rt 1 = x/sq rt 3 Please solve and explain. Thanks

    asked by Jane
  175. Quantum Physics

    Suppose we have a particle in 1-dimension, with wavefunction Ae^(−|x|/2d). What is the probability to find the particle in the interval [0,d]?

    asked by qwerty
  176. Quantum Physics

    Suppose a particle has wavefunction ψ(x,t=0)=Ae^(−x^2/l^2). What is the average value (expectation value) of p, , for this state at t=0?

    asked by qwerty
  177. ms sue checkanswer lang arts

    10. Which of the following sentences is punctuated correctly? David wants to go skiing; however he can’t go with you this weekend. *******David wants to go skiing, however, he can’t go with you this weekend. David wants to go skiing; however, he

    asked by jman
  178. math

    The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?

    asked by Evie
  179. maths

    How many lattice points lie on the sphere x^2+y^2+z^2=2013? Details and assumptions A lattice point has integer coordinates.

    asked by Anonymous
  180. Ratio

    Would you put 1:4 or 4:1 which one look better?

    asked by jman
  181. algebra

    f(x)=8/x-5. Find the symbolic representation for f^-1(x) I don't know if this is right: (x-5)y=8 x-5y=8 5y=8-x 5x/8x =f^-1(x)

    asked by Anonymous
  182. college algebra

    Find (f°g)(2) when f(x)=5x+9 and g(x)=1/x Thanks

    asked by Anonymous
  183. English

    At the school talent show, Tom is doing voices of the formal President. Don is presenting a pansori, a kind of folk play. David and Tony are singing Oh! Susanna to a piano. (Would you check the passage? Correct errors, please.)

    asked by rfvv
  184. math

    Find all roots of the equation ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.

    asked by lucy
  185. Roman Numerals

    23 _____ XXIII 44 ____ XLIV 52 ____ LII 17 ____ XVII 68 ____ LXVIII 99 XCIX 1,111 MCXI 575 DLXXV 946 ____ CMXLVI

    asked by Jerald
  186. college algebra

    Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks

    asked by Anonymous
  187. Math

    I don't get this question! Please help. A pizza is divided into 8 slices. Diana eats 1/16 of the pizza in 5 minutes. At this rate, how many slices can she eat in one hour?

    asked by Angie
  188. college algebra

    Find the local maximum and minimum values of the function and the value of x at which each occurs. State each answer correct to two decimal places. (If an answer does not exist, enter DNE.) U(x)=x√(5-x)

    asked by kadijah
  189. Math

    How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?

    asked by C
  190. math

    (7b + 6c)(-2b + 10c) Simplify

    asked by Boobear
  191. physics

    A 5.11-kg pendulum bob, at a height of 0.730 m above the floor, is released and swings down to the ground where it collides elastically with a 2.29 kg block initially at rest. The block then slides up a 31.0° incline. Find how high up the incline the

    asked by patt
  192. social studies

    as a automobile assembly worker at a GM plant in Ohio, in t e current economic situation, will new manufacturing methods such as industrial robotics increase or decrease job security? what can GM and the UAW do independent of gov action to enhance job

    asked by nana
  193. MATH please help

    An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be

    asked by Mike
  194. economics

    In your (imaginary) neighbourhood, the general consensus seems to be that 4 out of 5 cars are in good working order. The price for a good second-hand car is 2000$, while malfunctioning ones typically fetch 600$. (a) What is the expected value of a used car

    asked by kerry
  195. math

    a recipe call for 8/9 of a cup of granola. you only want to make 1/9 of the recipe. How much granola do you need?

    asked by Rhonda
  196. math

    35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of

    asked by Math (PLEASE HELP!)
  197. algebra

    f(x)=8/x-5. Find the symbolic representation for f^-1(x) I don't know if this is right: (x-5)y=8 x-5y=8 5y=8-x 5x/8x =f^-1(x)

    asked by Anonymous
  198. english-edits

    Same-sex marriage should be legalized because it is uncivilized to deny homosexuals their civil rights. The Constitution guarantees everyone equal rights and opportunities, however, gays are denied both in terms of marriage. is this better? I have support

    asked by Blaze
  199. MATH

    An engineering consultant bids on jobs where he can make $10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4

    asked by Oliwia
  200. math

    35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of

    asked by Oliwia
  201. Chemistry

    Determine the number of particles in this sample. Identify the unit as a formula unit or a molecule. 58 g of chromium (III) sulfate.

    asked by Jenny
  202. physics

    Find the outside surface area. Note that the containter has a top. (Assume a = 1.95 in, b = 1.35 in, c = 1.3 in, d = 1.25 in, and e = 2 in.)

    asked by Anonymous
  203. Math

    A national survey shows that 13 out of every 25 middle school students have cell phones Patton MIddle School has 475 students about how many students can have cell phones 38 273 247 325 325?

    asked by Jerald
  204. Hans kekana high school

    Critically discuss 10 ways in which the environmental health hazard can impact negatively on ones health

    asked by Kgaugelo
  205. Calculus

    If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 - 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

    asked by Wiz
  206. Math

    1. Which of the following is equivalent to 8 2/5? a.42/5 b.34/5 c.39/5 d.24/5 2. Which of the following fractions is between 3/5 and 2/3? a.3/6 b.3/4 c.5/8 d.7/10

    asked by Adaija
  207. math

    2 3/5 - 1 5/6 = ? 10 2/9 - 5 3/7 = ? 2 3/5 - 1 1/4 = ? Please help me.

    asked by Anonymous
  208. math

    Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 5 miles?

    asked by samantha
  209. chemistry

    Calculate the pH of a buffer using dihydrogen phosphate and it's conjugate base. The concentration of weak acid is 0.23 M and the conjugate base concentration is 1.19 M

    asked by Anonymous
  210. stastics

    solving problem the chicago public school system has about 680 schools about 130 of the schools will be closed. if the five schools are chosen at random find the probability that at least three of them willl be closed

    asked by lilly
  211. statistics

    An educational researcher studying the ages of freshmen at community colleges took a sample of 12 students. The data below represent the ages of the students sampled

    asked by john
  212. Human Services HSM/260

    Explain your understanding of the two procurement strategies listed in the text. Which of the two procurement strategies is most effective for a human service agency? Explain your reasoning.

    asked by kim
  213. math

    (5t^4 + 6t^3 – 3t^2 + 4t - 11) - (-9t^4 – 6t^3 + 5t^2 + 3t + 8) Simplify Help

    asked by Boobear
  214. Math

    4.Longview is located between Tyler and Marshall on the state highway. THe distance between Tyler and Longview is 45 miles. THe distance between Longview and Marshall is 25 miles. Which equation could be used to find d, the round trip between Tyler and

    asked by Jerald
  215. maths-conic sections

    find cartesian equation of a hypeerbola with centre as origin , focus : ( 2, 0 ) and line x = 2 as directrix .

    asked by anoynomous
  216. 6th grade grammar

    Please help I have a test tomorrow! Is there a mistake with the comparative adverb? 1. Thomas jumped highly than he ever had before. a. Change highly to higher . b . Change highly to highlier . c. Change highly to more higher . d. Make no change. 2. Andre

    asked by samantha
  217. Stastics

    average for all football teams was an 86 with variance of 16. the buckeyes program over the last 16 year was a 93. is there sufficient proof at the .05 level of significance to say buckeyes were higher than everyone else.

    asked by K
  218. life orientation

    one environmental or human factor that causes ill health or accidents or disasters within your community

    asked by rajen
  219. Chemistry

    Name a few pharmacopoeias.

    asked by Wube
  220. precalculus

    Find a simplified expression for cos(tan^(-1)(x/5))

    asked by Anonymous
  221. Ms. Sue Check answer LAng Arts

    4. Which of the sentences below is punctuated correctly? I have visited three countries including: Spain, Portugal, and France. I have visited three countries: Spain, Portugal, and France. I have visited three countries; Spain, Portugal, and France. I have

    asked by jman
  222. Math

    Solve Mentally with conversion to decimals, no calculation of common denominators. Place the following in ascending order(smallest to largest) 1/4 8/9 7/10 9/21 7/16 2/3 2/47 5/6 3/4 3/5 1/13 1/8

    asked by Angela
  223. Math

    If a salesman sold 2 cars in his first month, 8 cars in his second month, and 32 cars in his third month, using the same sequence how many cars would he sell in month 4, month 5, and month 6

    asked by George
  224. calculus

    Use a graph of f(x) = 3 e^{-8 x^2} to estimate the x-values of any critical points and inflection points of f(x). critical points x= Inflection points x= Next, use derivatives to find the x-values of any critical points and inflection points exactly.

    asked by sam
  225. Chemistry

    A 7mL triprotic acid was analyzed and found to contain 0.2572 grams of acid, evidence of phosphate group. Find the molecular weight of the acid, and identify acid. Thank you.

    asked by Dan
  226. math x

    8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

    asked by Jeffrey
  227. college algebra

    f(x)=x-5 and g(x)=√3x, what us the domain of g°f ? Thanks

    asked by Anonymous
  228. mah

    What is one half of 3 2/3?

    asked by Anonymous
  229. math

    You expect to receive $16,000 three years from today. If the present value of this amount is $12,701.13, what is the APY? What is the monthly return?

    asked by LilTil
  230. Please Help!!!! Maths

    In order to earn $1,000 in interest over 2 years at an annual rate of 4%, how much principal must be put into a saving account?

    asked by Jeconiah
  231. Life Orientation

    Critically discuss ten ways in which the environmental health hazard can impact negatively to one's health

    asked by Mkhululi
  232. operatioms managment

    a) What is the optimal order quantity when Lisa purchases more than 10,001 pieces?

    asked by Anonymous
  233. math

    (5t4 + 6t3 – 3t2 + 4t - 11) - (-9t4 – 6t3 + 5t2 + 3t + 8) Can somone help me ? Simplify . . .

    asked by Boobear
  234. math

    Factor the following polynomials. 9. 3x2 – 12 10. 5x3y + 35x2y + 45xy

    asked by Boobear
  235. Math (Combinatorics)

    A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a

    asked by Bob
  236. math

    (8x^4 - 6x^2) + (2x^2 - 8)(2x^2 + 8) Simplify help

    asked by Boobear
  237. math

    if sin^-1>cos^-1 then x belongs to which interval

    asked by hasee
  238. science

    going 80 km/h how far can you travel in 30 minutes?

    asked by marisa
  239. college algebra

    f(x)=x^2-3 and g(x)=4x+1 to Evaluate (f-g)(-3) Then find (fg)(x) Thanks a million

    asked by Anonymous
  240. chemistry

    If a sample of HNO3 is found to contain 8.44 · 10-2 mol of N atoms how many moles of HNO3 molecules are present? Express your answer in scientific notation.

    asked by Katie
  241. math

    Danny has 75 marbles in red color and blue color. He found out number of red marbles is 15 less than twice of the blue marbles. What are the numbers of red and blue marbles does danny have?

    asked by valerie
  242. English

    1. Tom has tomato sauce on her nose. 2. There is tomato sauce on Tom's nose. (Are both the same?) 3. There are sinks and tall tables in the cooking classroom. 4. The cooking classroom has sinks and tall tables. (Are both the same?) 5. The students are

    asked by rfvv
  243. Please Help!!!! Maths

    Over a three-year period, the total interest paid on a $4500 loan was $1620. What was the interest rate?

    asked by Jeconiah
  244. chem

    A 2.35-L container is filled with 165 g argon. If the pressure is 10.0 atm, what is the temperature?

    asked by ree
  245. precalculus

    Find a simplified expression for cos(tan^(-1)(x/5))

    asked by Anonymous
  246. Math

    A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a

    asked by Mark
  247. Algebra please

    I have two left I need help with and don't understand. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75.

    asked by Jess
  248. life Orientation

    5 ways in which the human or environmental problem impacts on the community

    asked by Motlatso
  249. algebra

    70x-1=10x-70

    asked by Anonymous
  250. Algebra 1

    is 3(2y^2-5)(y+1) completely factored

    asked by Nicole
  251. Algebra

    X^2(y-7)-14x(y-7)+45(y-7)

    asked by Betty
  252. Math

    1.The cost of a soda at Paul's Pizza is $1.69. Refills are $0.45 each. Gabe ordered a cola and had it refilled 3 times. Which equation can be used to find d, the cost in dollars of Gabe's cola? A.d=3(1.69+0.45) B.d=1.69+3(0.45) C.d=1.69+0.45+3

    asked by Jerald
  253. maths- urgent

    The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

    asked by anoynomous
  254. math

    A jara has 25 green grapes and 75 purple grapes. what is the probability that a purle grape will be chosen at random?

    asked by Andrea
  255. trig

    Indoor steps generally are steeper and have smaller landings. A staircase has a 9 inch vertical rise per step to get to the second floor of a house. If the angle of elevation is 36.8 degrees and there are 16 feet of horizontal space total for each of the

    asked by Leia
  256. math

    How do I find the sum of 256,14,632, and 25

    asked by Chas
  257. chem

    calculate the volume of water that can be treated if 50 g of potassium permanganate is added to the system. Assume that the concentrated iron (II) ions in well water is 5.0ppm

    asked by shyanne
  258. math

    the dollar card is $3 per month and 10cents per minute How much would the monthly bill for $85 minutes be with the dollar card?

    asked by Anonymous
  259. ~ MATH

    The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?

    asked by Oliwia
  260. science

    a 20 meter flag staff casts a shadow of 12 meter.what is angle of sunrays to the tree

    asked by dhatrika
  261. precalculus

    Find a simplified expression for cos(tan ^(-1)(x/5))

    asked by Anonymous
  262. math (Algebra)

    (c+x)squared ----------------- 2y c= -8 x= 10 y= 6

    asked by Joel
  263. math

    if a board is 5\8 feet long and you want to cut it in 3 equal pieces, how long will each piece be?

    asked by andrew smith
  264. Algebra 3

    find the sum of each finite arithmetic series 8+9+10+...+15

    asked by Erica
  265. Phiriphiri

    5 ways in which the crime problem impacts on the community

    asked by Tshilande
  266. chemistry

    assume all of the ionized aspirin remains in the buffer solution and all of the un-ionized aspirin goes into to the ethyl acetate, what is the molarity of the aspirin in the ethyl acetate at pH 2 and pH 8? what equation would ou use for this?

    asked by kelly
  267. Math

    4.Longview is located between Tyler and Marshall on the state highway. THe distance between Tyler and Longview is 45 miles. THe distance between Longview and Marshall is 25 miles. Which equation could be used to find d, the round trip between Tyler and

    asked by Jerald
  268. algebra

    slope line of (-1,3)(4,5)

    asked by sandy
  269. math

    7.49plus2.05divide0.50less0.59

    asked by vaidehi
  270. math

    tan^-1(x/√a^2-x^2)=sin^-1(x/a)

    asked by hasee
  271. arithmetic

    what is 6.3x100

    asked by Anonymous
  272. math

    help please!!!!! divide and simplify a/a-b b/a-b

    asked by luz