Questions Asked on
September 30, 2013

  1. Science Safety

    Is there a website which gives safety rules for a study session outside a laboratory, mainly outdoors? It should be for students and I would also like a website/section which tells about how to prepare for an accident and what to do if there is one. Thank

    asked by Anonymous
  2. physics

    3. A box is given an initial speed of 3.0 m/s up an incline where the angle θ =22o. Use the diagram below to define the x-y axes. Assume the original position is on the ground (xo and yo = 0). Ignore friction. a. How far up the plane (in meters) will the

    asked by sam
  3. MircoEcon

    Agree or disagree with this statements and explain: If the demand for a good has unitary elasticity, or elasticity is -1, it is always true that an increase in its price will lead to more revenues for sellers taken as a whole.

    asked by Jeff
  4. math

    i need help to solve this 0.3(0.3x+0.8

    asked by vanessa
  5. Beginners Spanish

    I need to form a question out of this response. I wanted to know if it was correct. Response:Hay mucha tarea hoy. Question I formed:¿Cuánta tarea hay hoy?

    asked by Devyn
  6. Math - Advanced Functions

    the function f(x)=-0.005x^2+0.8x+12 models the relationship between a certain vehicle's speed and a fuel economy, where f(x) is the fuel economy in kilometres per litre and x is the speed of the vehicle in kilometres per hour. Determine the rate of change

    asked by Sydney
  7. math

    the formula T=1/f relates the period of a sound wave T to its frequency f. solve this formula for f.

    asked by shoua
  8. math

    DVD cases are 9/16" wide. If Juan has 60 DVDs, how many will fit on a 2 1/2 feet long shelf?

    asked by Ariana
  9. physics

    football is kicked off with an initial speed of 66 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in

    asked by lucas
  10. math

    5th grade math parent. This will sound dumb but.... 5/7 1/2 and 3/14. The sum is 1 3/7 correct? The question reads MArshall surveyed his classmates and found 5/7 have a sister, 1/2 have a brother, and 3/14 do not have siblings. The question is: Why does it

    asked by Sara
  11. math

    5th grade math parent. This will sound dumb but.... 5/7 1/2 and 3/14. The sum is 1 3/7 correct? The question reads MArshall surveyed his classmates and found 5/7 have a sister, 1/2 have a brother, and 3/14 do not have siblings. The question is: Why does it

    asked by Sara
  12. Chem

    If you take a 15.0-mL portion of the stock solution and dilute it to a total volume of 0.700L , what will be the concentration of the final solution?

    asked by meaghan
  13. Pre-Calculus

    A local photocopying store advertises as follows. " We charge 14 cents per copy for 150 copies or less,6 cents per copy for each copy over 150 but less than 230, and 3 cents per copy for each copy 230 and above. " Let x be the number of copies ordered and

    asked by Ann
  14. math

    Thank you Jai!

    asked by Sara
  15. proposal writing for high school english

    how to write a proposal in brief for a 10 marks question? What structure should be followed for just 10 marks?

    asked by neha
  16. Science: physics

    Why does the moon not require a push to keep it along its orbit around the earth? -I have to use Newton's first law of motion.

    asked by Losa
  17. English

    Chiara's show is coming soon. We can't wait to see it. (How do you pronounce "Chiara' in the first sentence?)

    asked by rfvv
  18. Geometry proving quadrilaterals

    Proving quadrilaterals PLEASE PLEASE PLEASE HELP *the diagonals of a square bisect the vertex angle * the diagonal of a rhombus are perpendicular *each diagonal of a rhombus bisects the opposite angles of the rhombus help me prove please how ? tell me

    asked by Julia
  19. college math

    1/100000-1/10000

    asked by Tekishia
  20. MATH

    customers loan of 675 the annual interest is 19.25. what is the total dollar amount to be repaid including principle and interest for the entire year?

    asked by Anonymous
  21. maths

    find the total amont to be paid if :- (i)one rain coat of rs.300,vat@10% (ii)one pair of shoes of rs.460,vat@9% (iii)clothes of rs.800vat@1% are purchased.

    asked by shrestha tejaswi
  22. Math

    5th grade parent can you please show me how to break down 4 4/5 does it end up being 24/5? the probleam is: 4/4/5 -1 7/8

    asked by Sara
  23. MATH

    i am a no. less than 10.my hundredths digit 3 more than my thousands digit.my tenths is 2 less than my hundredths and my ones is the sum of my tenths and my hundredths digit. what number can i be?

    asked by kristine Ramos
  24. maths

    Find the roots of the following quadratic equations (if they exist)by the mnethod of completion of the square . (i) x^2-(root2+1)+root2=0

    asked by help()!!!!!
  25. maths

    Find a formula for the n'th of the sequence : 2,4,8,16,32

    asked by arzam
  26. Probability With Cards

    When drawing a card from a deck, the P(king and hearts) is:

    asked by Alex
  27. Card Probability

    When drawing a card from a deck, the P(face card and red) is:

    asked by Alex
  28. Dice Probability

    What is the probability of rolling two number cubes and having the first cube land on 2 and the second cube land on 3? I got 2/6 * 3/6 = 6/36 which becomes 1/6 1/6 probability is my answer correct?

    asked by Alex
  29. maths

    Find the n'th term of the sequence : a) 1/2, 2/3, 3/4, 4/5 b) 5/1^2, 5/2^2, 5/3^2, 5/4^2

    asked by arzam
  30. maths

    Find the n'th term of the sequence : a) 1/2, 2/3, 3/4, 4/5 b) 5/1^2, 5/2^2, 5/3^2, 5/4^2 c) 3/1, 4/2, 5/3, 6/4

    asked by arzam
  31. chemistry

    You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the

    asked by lacy
  32. english

    Summarize the main points of this reading.Possible points to reflect upon for your reflection paper and for workshop discussion are: 1)Ray has been diagnosed with Tourette’s Disorder, a neurological disorder which also appears in the DSM-5. How would you

    asked by ios7
  33. science

    What is a possible hypothesis that could be tested in the Atomic Theory lab?

    asked by bob
  34. math

    find an advertisement for a weight loss product either online or in the print media, the more unbelievable the claims, the better a. What data does it offer for its promised benefits? Does it offer any descriptive statistics or merely testimonials? if it

    asked by ios7
  35. chemistry

    You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the

    asked by lacy
  36. physical science

    calculate the number of moles of H2SO4 wich were added to the NaOH solution

    asked by gill
  37. chemistry

    What is molarity? what is the unit to measure moralrity?

    asked by Anonymous
  38. maths

    If a line with x-intercept −3 and y-intercept 21 passes through point P=(8,a) , what is the value of a?

    asked by CHRIS
  39. la sallle

    There are 3 consecutive even integers such that the quotient obtained by dividing twice the largest integer by the smallest integer is three less than three-fifths of the second integer. What are the integers?

    asked by rr
  40. english

    Read “Witty Ticcy Ray” by Oliver Sacks What does Ray mean when he says “Suppose you could take away the tics. What would be left? I consist of tics-there is nothing else.”?

    asked by ios7
  41. english

    Read “Witty Ticcy Ray” by Oliver Sacks How does Oliver Sacks, a neurologist, look beyond his biological/medical paradigm in his treatment of Ray?

    asked by ios7
  42. physics

    a body of mass m accelarates uniformly from the rest to velocity v1 in time t,find the expression for instantaneous power deliver to the body as the function of t?.......can any one help me with this......please.....

    asked by ether
  43. maths

    If P=(a,a) is a point on the line y=−2x+27, what is the value of a?

    asked by CHRIS
  44. physics

    a body of mass m accelarates uniformly from the rest to velocity v1 in time t,find the expression for instantaneous power deliver to the body as the function of t?.......can any one help me with this......please.....

    asked by ether
  45. biology

    How does mitosis in plant cells differ from that in animal cells? A. Animal cells lack a cell plate. B. Plant cells lack centrioles. C. Plant cells lack spindle fibers. D. Animal cells lack cytokinesis. I chose b but I got it wrong please help....

    asked by nina
  46. Physics

    A bus travels 290 km south along a straight path with an average velocity of 81 km/h to the south. The bus stops for 25 min, then it travels 210 km south with an average velocity of 80 km/h to the south. How Long does it lasts ? Answer in units of h . What

    asked by Thomas
  47. phys223

    What is the amplitude of the motion? Remember, at t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = -.33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2

    asked by eddy
  48. Economics

    Example of one irrational economic decision

    asked by Mary
  49. Math/Science

    Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent in N (Newshoe), and 10

    asked by Walter
  50. Science/Math

    John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook that included the

    asked by Walter
  51. Science/Math

    A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that included the word problem is:

    asked by Walter
  52. science

    12-83. Determine the maximum height on the wall to which the firefighter can project water from the hose, if the speed of the water at the nozzle is 48ft/s

    asked by aaa
  53. CHEMISTRY

    Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert

    asked by Allie
  54. CHEMISTRY

    Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert

    asked by Allie
  55. intermediate algebra

    A local electronics store will sell seven AC adapters and two rechargeable flashlights for $86, or three AC adapters and four rechargeable flashlights for $84. What is the price of a single AC adapter and a single rechargeable flashlight?

    asked by amanda
  56. English

    Check my answers please 9. The author of "My Brother's Keeper" mainly develops Jamie’s character through his actions *dialogue and thoughts the narrators description other’s reaction to him 10. In "My Brother's Keeper," what does Ted want Jamie to do

    asked by Anonymous
  57. Economics

    Give at least one example of a form of advertising that influences consumer behavior — that is, advertising that persuades people to buy a good or service that otherwise would not have purchased.

    asked by Mary
  58. pre algebra

    Use the compound interest formula to find the value of the investment after 5 years, compounded semiannually. $1,000 at 6% annual interest

    asked by india
  59. chemistry

    What is the major difference between the two-dimensional and three- dimensional models of ethane and methane? When might you choose to use a two-dimensional model rather than a three-dimensional model when representing one of the molecules?

    asked by Jessica
  60. English

    What are some flaws that people had against equal rights?

    asked by vickie
  61. Media

    Can you help me reword these media paragraphs to an A* standard please?

    asked by Jasmine
  62. Economics

    Give at least one example of a news story that has influenced consumers desires or affected consumer behavior. Describe the effect it had on your consumer behavior.

    asked by Mary
  63. algegra

    Solve the following inequality. 4x-4/x+3≤3

    asked by Miriam
  64. Physics

    A loudspeaker of mass 20.0kg is suspended a distance of h = 1.60m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 4.00m .

    asked by Anonymous
  65. Economics

    is Nine co by nine west a name brand store?

    asked by Mary
  66. Statistics

    Ricardo's car rental offers five different types of vehicles, compact cars (CC), midsize cars (MC), sport utility vehicles (SUV), vans (V), and luxury cars (L). Historically, if a random individual comes to rent a vehicle, the following probabilities

    asked by Jesse
  67. phusics

    At the end of most landing runways in airports, an extension of the runway is constructed using a special substance called formcrete. Formcrete can support the weight of cars, but crumbles under the weight of airplanes to slow them down if they run off the

    asked by joe
  68. Algebra

    Multiply: -8(2a+4b-6)

    asked by Laurie
  69. Math

    Point A ( 6, -2) is reflected over the X axis.Write the coordinates of A'.

    asked by Steve
  70. Math

    How many lines of symmetry does a right triangle have?

    asked by Steve
  71. Physics

    A bag of sugar weighs 6.70 lb on Earth. a) What would it weigh in newtons on the Moon, where the free-fall acceleration is one sixth that on Earth?

    asked by Kelsey
  72. Water treatment

    The capacity of the groundwater treatment plant has recently been expanded to receive an additional 50,000 m3/year. As a result, all of the 6 rapid sand filtration are being operated. Assume a peak flow factor of 1.5. If the filtration rate is 5 m/h, what

    asked by WT
  73. Water treatment

    If the RQ is 6 and the k2t is 4, what is the removal efficiency of (CO2) of the co-current tower aerator. What will be the efficiency if a tower aeration with counter current flow is used instead? what is the efficiency of the co-current tower aerator (%):

    asked by WT
  74. Chemistry

    The initial concentration for the compounds involved in the reaction displayed were determined to be [PCl5(g)] = 0.4107 mol/L, [PCl3(g)] = 0.3463 mol/L, [Cl2(g)] = 0.04085 mol/L. Calculate the value of the equilibrium constant (Kc) at 191.0 °C if the

    asked by marmar
  75. Finance/571

    Trigen Corp. management will invest cash flows of $1,206,765, $1,085,603, $602,301, $818,400, $1,239,644, and $1,617,848 in research and development over the next six years. If the appropriate interest rate is 9.14 percent, what is the future value of

    asked by Anonymous
  76. math

    The GCF of two numbers is 850. Neither number is divisible by the other. What are the least two numbers these could be.

    asked by sam
  77. math

    What is mental math?

    asked by mateo
  78. Math

    maria works 8 hr shifts.she has earned 62.75 mins of sick time. how many sick days does she have

    asked by Gina
  79. Math

    maria works 8 hr shifts.she has earned 62.75 mins of sick time. how many sick days does she have

    asked by Gina
  80. MATH

    YANCEY COLLECTS PLASTIC BANKS. HE HAS THREE DIFFERENT BANKS;A PIG,A COW, AND A HORSE. HOW MANY WAYS CAN YANCEY ARRANGE HIS BANKS ON A SHELF

    asked by JUDY
  81. Chemistry

    Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.206 mol sample of PCl5(g) is injected into an empty 3.30 L reaction vessel held at 250 °C. Calculate the concentrations of

    asked by Katherine
  82. Dma 040

    v =1/3ah, solve for h

    asked by Bridget
  83. math

    The LCM of two numbers is 51. Both numbers are greater than 1 and both numbers are prime. What are the two numbers?

    asked by sam
  84. AP Chemistry

    What would be the final temperature of the system if 20 g of lead at 100◦C are dropped into 20 g of water at 30 ◦C in an insulated container?

    asked by Anonymous
  85. interest

    Matty Kaminsky owns a new Volvo. His June monthly interest was $400. The rate is 8 1/2 percent. Matty's principal balance at the beginning of June, rounded to the nearest cent, is: (Use 360 days)

    asked by Anonymous
  86. chemistry

    A mixture of NaCl and NaBr has a mass of 2.04g and is found to contain 0.70g of Na. What is the mass of NaBr in the mixture?

    asked by Anonymous
  87. earth

    Inclusion occurs when?

    asked by sasa
  88. Spanish

    I don't get what word to choose: Estudias mucho, ¿ (blank)? Do I fill it in with verdad or gusto? Why?

    asked by Anna
  89. language

    What word does the italicized adverb in the sentence modify? The dog COMPLETELY swallowed the small milk bone. a) dog b) swallowed c) small d) milk-bone

    asked by victoria
  90. Geometry

    The Seattle space needle is 604 feet tall. a model of the building is 48 inches tall. what is the ratio of the height of the model to the height of the actual space needle? A. 151:1 B 151:12 c.1:151 D.12:151

    asked by gabbi
  91. language

    Which strategy helps you identify the adverb in the sentence ? The race was completed quickly. a) where? b) when? c) how? d) to what extent?

    asked by victoria
  92. Algebra 1

    To answer the following questions, my assigned textbook provides a chart of the required information which displays 5 individual sections of the amounts of the different types of DVD rentals. Comedy is 320 rental; action is 200 rentals; drama is 160

    asked by Anonymous
  93. language

    What type of context clue is provided for the italicized word in the sentence below? when you are PRONE to something, you are likely to act or be a certain way. a) direct definition b) visual clue c) explanatory word or phrase d) antonym

    asked by victoria
  94. Algebra 1

    What percent of 40 is 25?

    asked by Anonymous
  95. Mathematics

    800 * 0.25 = ?

    asked by Anonymous
  96. Math

    If 19 is subtract from three times a certain number,the difference is 11.what is the number?

    asked by Kirandeep
  97. Math

    Jane is thinking of a number C with the property 3(2+c)=12.what number is jane thinking about?

    asked by Kirandeep
  98. chemistry

    it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .

    asked by David
  99. chemistry

    it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .

    asked by David
  100. English

    What is dinosaur in the sentence? What happened to the dinosaurs?

    asked by Kelley
  101. Algebra

    What expression is equivalent to 5(p + q)?

    asked by Anonymous
  102. chemistry

    it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .

    asked by David
  103. English

    What is mammals in this sentence? However, no blockbuster movie features small mammals! Direct object?

    asked by Kelley
  104. language

    which of the following is not a type of folktale? a) cautionary tale b) mystery c) legend d) myth

    asked by victoria
  105. language arts

    Some friends from my class went to museums ballet exhibit. which of the following is an adjectival phrase? a) went to the museum ballet exhibit b) the museums ballet exhibit c) from my dance class d) some friends

    asked by victoria
  106. news/english

    still struggling with impact/significance An estranged daughter and her husband start a family shoot out at her parents’ mobile home in rural Pennsylvania leaving everyone except the woman’s father dead. John Frew allegedly shot and killed attackers

    asked by Blaze
  107. Mathematics

    12 * 1.25 = ?

    asked by Anonymous
  108. physics

    A 2.1 multiplied by 103-kg car starts from rest at the top of a 5.8-m-long driveway that is inclined at 22° with the horizontal. If an average friction force of 4.0 multiplied by 103 N impedes the motion, find the speed of the car at the bottom of the

    asked by Anonymous
  109. French

    Souligne l'adjectif dans la premiere phrase, puis complete la deuxieme phrase avec l'adverbe qui correspond. Exemple: Le dectective Lee est logique. Il a travaille. 1. La dectective Lee est logique. Il a travaille______. 2. La detective Jura est serieuse.

    asked by Peter Griffin
  110. Geometry

    Sarah is making a scale drawing of a painting that is 48 in. wide by 120 in tall. her paper is 12 in. wide and 24 in. tall. She decides to use the scale 1 in. = 4in. is this a reasonable scale?

    asked by gabbi
  111. Math

    Mr.jones bought a share of a stock at the cost of x dollars. This year his stock is 17 dollars,which is five more than triple the original price.how much did mr.jones pay for the stock originally?

    asked by Kirandeep
  112. Physics

    A small turbo-prop commuter airplane, starting from rest on a Gander airport runway, accelerates for 19.5 s before taking off. Its speed at takeoff is 53.6 m/s (120 mi/hr). Calculate the acceleration of the plane, in g's, assuming it remains constant.

    asked by CONFUSED PHYSICS STUDENT
  113. Physics

    While exploring the canopy of the rainforest in equatorial South America, Anastasia falls from a branch 43.0 meters high. Exactly 1.6 seconds later Joe falls from the same branch. How high above the ground is Joe when Anastasia splats into the mud below?

    asked by Carlos
  114. English

    What is mystery in this sentence? The disappearance of the colony is a great mystery. Is it a predicate noun

    asked by Kelley
  115. Last news/english proofread

    A New Jersey Chemist convicted of poisoning her husband to keep him from divorcing her was sentenced to life in prison today. Titanle Li used thallium to poison her husband Xiaoye Wang in 2010. Thallium is a tasteless, highly deadly poison that is

    asked by Blaze
  116. Algebra 1

    What percent of 45 is 6.75?

    asked by Anonymous
  117. physics

    when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m

    asked by katy
  118. physics

    when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m

    asked by katy
  119. math

    There are 30 books in a bookcase. The books in the case are either math, science ,or history books. Ten of the books are math books. There are 6 fewer science books than history books. How many science books are in the bookcase??????

    asked by kilah
  120. Math

    There are X number of people living in a house.three less than four Times the number of people is forty one.how many people lives in the house?

    asked by Kirandeep
  121. math

    A TOY STORE IS ORDERING 3,000 REMOTE CONTROL CARS.THE STORE CAN ORDER THE CARS IN SETS OF 10.HOW MANY SETS OF 10 DOES THE STORE NEED TO ORDER?

    asked by VR
  122. physics

    You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 294 N for 7.6 s, during which time the refrigerator moves a distance of 3.2 m at constant velocity. (a) What is the total work (by all forces) done on the

    asked by sandy
  123. biology

    explain how a pyramid can be used to show the relationship among the organisms in the food web.

    asked by loli
  124. physics

    A driver in a car traveling at a speed of 70 km/h sees a cat 129 m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 125 m? answer in units of s

    asked by alex
  125. physics

    A driver in a car traveling at a speed of 70 km/h sees a cat 129 m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 125 m? answer in units of s

    asked by alex
  126. American History

    The failures of the Articles of Confederation showed that A.) The new government had to be powerful. B.)State government had to be all-powerful. C.)The people should not grant powers to the government . D.)The government should not guarantee individual

    asked by Gayle
  127. math

    a toy car store is ordering 3,000 remote control cars.the store can order the cars in sets of 10.how many sets of 10 does the store need to order? a.30 b.300 c.3,000 d.30,000 a.what information do you need to use? b.what do you need to find? c.how can

    asked by VR
  128. Language Arts

    3 main points for a speech on the alphabet

    asked by Natalie
  129. Geometry

    Use the Division Property of Equality to complete the following statement. If 5x=2y, then x=? Mom in need of help

    asked by Kandy
  130. Calculus

    Can some one please explain this problem to me? Find lim x->0 (sin5x/sin7x)

    asked by Cat
  131. physics

    A superhero flies 285 m from the top of a tall building at an angle of 15 ◦ below the horizontal. What is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer. Answer in units of m Your

    asked by emily
  132. Algebra

    I do not understand this word problem at all. write an equation and solve. A rectangle has a length of x+6 units and a width of x-3 units. what is the perimeter in terms of x?

    asked by Anonymous
  133. chemistry

    What mass of silver chloride can be produced from 1.36L of a 0.130M solution of silver nitrate?

    asked by samantha
  134. math

    the temperture was 80 degrees F at noon on tuesday the temperture changed -2 degrees F per hour from noon on tuesday until 10:00 am the next morning what is the new tempeture

    asked by keke
  135. Physics

    As a train approaches the city it sees a stalled car on the tracks. The train slams on its brakes going from 25 m/s to rest in 30 s. How far away was the stalled car when the train conductor slammed on the brakes?

    asked by Vanessa
  136. social studies

    which of the following would be categorized as the cultural element of dance? a) etouffee b) fais-do-do c) zydeco d) gospel

    asked by victoria
  137. social studies

    which characteristics of geography is reflected in the similarities between the Acadians of Nova Scotia and the Cajuns of Louisiana? a) movement b) location c) place d) adaption

    asked by victoria
  138. Science

    Why can't companies make standard measured products to sell within the USA and make metric measured products to sell outside the United States?

    asked by Libby
  139. Language arts help please

    1. Identify the adjectives in the followig sentence. You can choose more than one answer. After a rainfall, bugs, slugs, and all sorts of multilegged critters would descend from the ceilings and fall on the kitchen table, or worse, on our bunks. Rainfall

    asked by Charlotte
  140. Statistics (Reiny)

    1. A consumer organization estimates that 30% of the households in a particular community have one television set, 39% have two sets, and 20% have three or more sets. What is the probability that a household chosen at random does not have two sets? A) 0.39

    asked by Lisa
  141. Algebra/Precalculus

    How can I verify that f(x)=(x+3)/(x-2)and g(x)=(2x+3)/(x-1)are inverse functions (i.e. show the process)? Also, how can I solve (g o f)^-1, if f(x)=x+4 and g(x)=2x-5? Thanks!

    asked by Ciera
  142. Math

    How would you solve this inequality -3(n+8)

    asked by Jake
  143. physics

    Heather and Matthew walk eastward with a speed of 0.76 meters per second east. If it takes them 50 minutes to walk to the store, how far have they walked? Answer in kilometers

    asked by Christian
  144. science please help

    Also why don't we accept the Metric System as it in now used in other countries?

    asked by Libby
  145. Geometry

    Help? The midpoint of (segment)AB is M(7,5). The coordinates of point A are (4,1). Find the coordinates of point B.

    asked by Amy
  146. math

    If a=3/-4 and b=-1/3, evaluate: (2a^2+4b)/14b^2

    asked by O.
  147. geometry

    There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?

    asked by Anonymous
  148. chemistry

    24.8 mL sample of a 4.63 x 10–2 M solution of NaCl is mixed with a 30.0 mL sample of a 3.67 x 10–2 M solution of AgNO3. What is the mass, in grams, of AgCl precipitate that forms?

    asked by pratibha
  149. chemistry

    If you dilute 10.0mL of the stock solution to a final volume of 0.350L , what will be the concentration of the diluted solution?

    asked by lissette
  150. algebra

    a 60 inch string is cut in 2 pieces, the first piece is 6" longer than twice the second piece, find th elength

    asked by Mayi
  151. Math

    Chen’s father was 25 when Chen was born. In 5 years Chen will be exactly half his father’s age. a. Try to figure out how old Chen is now. Describe how you got your answer. b. Now solve the problem using equations.

    asked by Michelle
  152. Math

    When they dial 3 and turn the oven on, it is like pushing the old button 3 times. That means if they start with one pizza in the oven, dial 3, and turn the oven on, they will get 27 pizzas. (33 = 27) Then if they dial -3 and turn the oven on it is like

    asked by Michelle
  153. algebra 1

    the base of isosceles triagle is 5 m less than 4 times the length of a side. The perimeter is 67, find the length of each side and the base

    asked by Mayi
  154. Algebra 1

    A rectangle has a length of 4x and a width of 4x-2. its perimeter is 12 inches find the length and width

    asked by Jason
  155. physics

    A motorist travelling at 82 km/hr is being chased by a police car at 121 km/hr. If the police car starts from 4.0 km back, how long does it take to catch the motorist? Leave time in hours.

    asked by sarah
  156. Math

    if kelly gave 1/3 of a pizza to holly and 1/5 to diana, how much did she have left?

    asked by Haley
  157. Math

    How would you solve this inequality -3(n+8)

    asked by Sammy
  158. Math

    Write two algebraic pattern rules for this toothpick pattern. Figure 1 = 3toothpicks Fiqure 2 = 5 toothpicks Figure 3 = 7 toothpicks Figure 4 = 9 toothpicks i need help please. I did 1-3n for Figure 1

    asked by Person
  159. Science

    If sodium,hydrogen,oxyegen,and chrlorine are mixed to gether is it a compund or a mixture?

    asked by Jenny
  160. Economics

    1. The law of diminishing returns implies that at some output level: a) Marginal cost must fall b) Average total cost must diminish c) profit increases d) Marginal cost must rise e) Total cost must fall 2. The vertical distance between total cost curve and

    asked by Nathan
  161. Algebra 1

    The formula for the volume of a rectangular prism with the length l, width w, and height h is V = lwh. Solve this formula for w.

    asked by Anonymous
  162. physics

    A shopper in a supermarket pushes a loaded cart with a horizontal force of 12 N. The cart has a mass of 33 kg. (a) How far will it move in 7.0 s, starting from rest? (Ignore friction.) m (b) How far will it move in 7.0 s if the shopper places her 30 N

    asked by sara
  163. Stats

    The Geometric distribution is used when we want to find the probability of performing a sequence of trials with X “failures” before the first “success”, where a “success” occurs with some probability p. We can denote such a random variable as

    asked by Becca
  164. Materials Transport

    You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

    asked by Elaine
  165. Math

    Chen’s father was 25 when Chen was born. In 5 years Chen will be exactly half his father’s age. a. Try to figure out how old Chen is now. Describe how you got your answer. b. Now solve the problem using equations.

    asked by peter
  166. College Statistics

    For X ∼ Bin(n, p), show that E(X) = np and Var(X) = np(1 − p) Our book defines this as true, but I don't know how to actually prove it.

    asked by Janet
  167. Math

    Casper bought some pencils at $.50 each. He had $3 left after the purchase. If he wanted to buy the same number of note pads at $.80 each, he would be short $1.50. Write a linear equation for the number of pencils he purchased. Then solve it.

    asked by Kris
  168. Stats

    For X ∼ Poi(λ), show that E(X) = λ and V ar(X) = λ. (Hint: Find E[X(X − 1)] = E(X2 ) − E(X).)

    asked by Becca
  169. College Statistics

    Suppose we want to model the number of rats captured in a single trap in a day, where the average number caught is 5 (i.e. X ∼ Poi(5)). (a) What is the probability of catching 6 rats in one trap in a day? (b) What is the probability of catching 12 rats

    asked by Janet
  170. Algebra 1

    Solve b + c = 10/a for a.

    asked by Anonymous
  171. math

    how many Km are in 1000dm?

    asked by jill
  172. Physics

    A 1.13 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 24.0 cm long and has a tension of 31.5 N, and it makes an angle θ2 = 51.0° with the rod, while the

    asked by Charlie
  173. Math PLEASE HELP ME!!

    How would you solve this inequality -3(n+8)

    asked by Sammy
  174. Algebra

    the perimeter of a triangle is 25 inches. The first side is 6 inches longer than the second side. The third side is 5 inches shorter than twice the second side. Find the length of each side

    asked by Jimmy
  175. Algebra 1-- I do not understand

    If a circle's circumference is 15 inches, what is its radius?

    asked by Anonymous
  176. Math

    (0.8)^2 + (0.5)^2 0.89?

    asked by Jerald
  177. Algebra 1 --Please help me!

    The formula A = P + I shows that the total amount of money A received from an investment equals the principal P (the original amount of money invested) plus the interest I. Solve this formula for I.

    asked by Anonymous
  178. Science

    3) what 2 chemical contaminants that can be found in a freshwater source for each one b) identify a source of contaminants that can be found in a freshwater source for each one. 4) briefly describe how a biological contaminant was able to get into

    asked by Help ASAP
  179. English - Please help quickly!!

    I need help with making a thesis statement for an essay I have to write on the book Poisonwood Bible The prompt I have says : Choose a novel or play that depicts a conflict between a parent and a son or daughter. Write an essay in which you analyze the

    asked by Tessa
  180. Math

    -3(8-6)^3+27/9= -8?

    asked by Jerald
  181. physics

    You throw a ball vertically from an apartment balcony to the ground 14.2 m below. Find the ball's initial velocity if it hits the ground 1.08 s after you release it.

    asked by squad
  182. 5th grade math

    if kelly gave 1/3 of a pizza to holly and 1/5 to diane how much did she have left?

    asked by jerry
  183. Algebra -Please help me

    an equilateral triangle has a side of length 2x-3. Its perimeter is 51 inches, find the length of each side

    asked by Jimmy
  184. Algebra 1-- I do not understand

    To find a baseball pitcher's earned run average (ERA), you can use the formula Ei = 9r, where E represents ERA, i represents number of innings pitched, and r represents number of earned runs allowed. Solve the equation for E. What is a pitcher's Era if he

    asked by Anonymous
  185. Social Studies

    What ethnic group contributed the St. Joseph's Altar to Louisiana culture ?? a) Chinese b) Italian c) Anglo d) American Indian

    asked by victoria
  186. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J
  187. Materials Transport

    You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

    asked by Elaine
  188. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J
  189. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J
  190. Math

    the length of a rectangular garden is 5 meters more than 3 times its width. The perimeter of the garden is 74 meters. What are the dimensions of the garden?

    asked by Evelyn
  191. Algebra - reposting - still need help / direction

    the perimeter of a triangle is 25 inches. The first side is 6 inches longer than the second side. The third side is 5 inches shorter than twice the second side. Find the length of each side

    asked by Jimmy
  192. Algebra

    the base of isosceles triagle is 5 m less than 4 times the length of a side. The perimeter is 67, find the length of each side and the base

    asked by Mayi - In need of help - Please :)
  193. physics

    The position of a toy locomotive moving on a straight track along the x-axis is given by the equation x = t 4 − 6 t 2 + 9 t , where x is in meters and t is in seconds. The net force on the locomotive is equal to zero when t is equal to Answer in units of

    asked by Anonymous
  194. pre algebra

    what do they call the internationa hula hoop championship?

    asked by Anonymous
  195. Cam

    How is phosphorus evident in estuaries?

    asked by Biology
  196. chemistry

    Consider the reaction between hydrogen and oxygen gases to form water: 2H2(g) + O2(g) ¨ 2H2O(l) Which of the following is not conserved in this reaction?

    asked by amanda
  197. algebra

    Given the peoblem (-3)2 x ( -3 )4 which is the correct answer (-3)6 or (9)6 ? Explain how you got the answer

    asked by John
  198. check my work on derivatives

    Can someone check my work? So, I took the derivative of (1-x^2)/((1+x^2)^2) I used the quotient rule ((2x((1+x^2)^2)-2((1+x^2)^2)(2x)(1-x^2))) / ((1+x^2)^4) Then I simplified it (2x+2x^2 - 4x((1+x^2)^2)(1-x^2)) /((1+x^2)^4) Then I simplified by factoring

    asked by Sarah
  199. Math

    Patrick drove 3 hours to attend a meeting. on the return trip, his speed was 10 mi/h less, and the trip took 4 hours. a) what was his speed each way? b) what is the distance he drove one way?

    asked by Evelyn
  200. algebra

    a painter charged $320 to paint two walls that measure 12 feet by 9ft and two walls that measured 10 ft by 9 ft. The client asks him to return to paint two walls that measue 15 ft by 12 ft and two walls that measure 18.5 feet by 12 ft. If the painter

    asked by bobby
  201. Chemistry

    Solid copper oxide reacts with ammonia gas according to the following equation: 3CuO + 2NH3 -> 3Cu + N2 + 3H20 50 grams of CuO is placed in an 80L reaction vessel, and the vessel was evacuated. Ammonia gas was then gradually introduced into the vessel,

    asked by Nikki
  202. math

    Ms. Sue I do not understand this question. Mr. Chen drove his truck 9,438 miles last year. He drove his truck 12,917 miles this year. How much farther did Mr. Chen drive his truck last year?

    asked by ezekiel
  203. Math

    what is the minimum distance (in feet) that a batter runs after hitting a home run at Yankee Stadium? Is it the same minimum distance at citi field (formerly Shea Stadium)? Is it the same at all professional ball parks?

    asked by Katlyn
  204. Geometry

    The circumference of the ball of string is 415ft and it weighs 13,0000Ib. what is the radius of the ball of string to the nearest tenth of a foot? A. 3.3 B. 6.6 C. 13.2 D. 20.75

    asked by George
  205. Physics

    A 1000 kg car rounds a curve of radius 70 m banked at an angle of 12°. What is the magnitude of the friction force required for the car to travel at 82 km/h?

    asked by Charlie
  206. Pre-Calculus

    A local photocopying store advertises as follows. " We charge 14 cents per copy for 150 copies or less, 6 cents per copy for each copy over 150 but less than 230, and 3 cents per copy for each copy 230 and above. " Let x be the number of copies ordered and

    asked by Ann
  207. Geometry

    The circumference of the ball of string is 415ft and it weighs 13,0000Ib. Which is the best approximation of the volume of the ball of string? F.300FT^3 G.600FT^3 H.1200FT^3 I.2400FT^3

    asked by George
  208. Geometry

    Find the area of each equilateral triangle. The triangle has 12cm sides. The triangle has 10in altitudes.

    asked by George
  209. Geometry

    The altitude to the hypotenuse of a right triangle ABC divides the hypotenuse into 12mm and 16mm segments. Find the lengths of each of the following. A. The altitude to the hypotenuse B. The shorter leg of angle ABC C. The longer leg of angle ABC

    asked by George
  210. Geometry

    The length of each side of a rhombus is 16. The longer diagonal has length 26. Find the measures of the angles of the rhombus to the nearset degree.

    asked by George
  211. Geometry

    Find the area of a regular pentagon with radius 5in.

    asked by George
  212. Geometry

    A cylindrical hockey puck is 1in high and 3in in diameter. What is its volume in cubic inches?

    asked by George
  213. Physics ...... Science

    A small airplane has a speech of 200km/h with respect to the air. There is strong wind blowing at 77km/h at 23 north of east with respect to the Earth . A) in which direction should the plane head in order to land at an airport due north of its present

    asked by Maria
  214. Math

    During a week-long dry spell,the water level in a pond decreased by 4 inches per day except for two days when it decreased by half of that amount. How much did the water level decrease in the pond in one week?

    asked by Anna
  215. Pre-Calculus

    A ball is thrown up at the edge of a 364 foot cliff. The ball is thrown up with an initial velocity of 72 feet per second. Its height measured in feet is given in terms of time t, measured in seconds by the equation h=−16t2+72t+364. How high will the

    asked by Ann
  216. physics

    A cannon is mounted on a railroad car. The cannon shoots a 1.75 kg ball with a muzzle velocity if 300 m/s. The cannon and the railroad car together have a mass of 4500 kg. if the ball, cannon, and railroad car are initially at rest, what is the recoil

    asked by Cori
  217. physical science

    calculate the mass and volume of oxygen released when 29;4g potassium chlorate decomposes to form potassium chloride and oxygen

    asked by asanda
  218. physical science

    if 96g so2 is added to 2 moles of oxygen at stp, what is the mass of so3 that is formed

    asked by asanda
  219. Algebra 1

    Solve for the indicated variable. a + b + c = 180

    asked by Anonymous
  220. chemistry

    1. What quantum numbers specify these subshells? 5s: n=? l=? 5p: n=? l=? 3d: n=? l=?

    asked by Shira
  221. chemistry

    Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element. Excited State: 1s2 2s2 2p2 3s1 Element Symbol: ? Ground State: ?

    asked by Kim
  222. chemistry

    Sort these elements into isoelectronic groups. Into three different boxes/sections. Elements: F- O2- Al3+ S2- Ti4+ K+ He Li+ B3+

    asked by David