Isabella

Popular questions and responses by Isabella
  1. CHEMISTRY

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked on September 9, 2015
  2. Math

    a truck can be rented from company A for $100 a day plus $0.60 per mile and company B charges $50 a day plus $0.80 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and B are the same.

    asked on October 4, 2014
  3. geometry

    The endpoints of line segment MN are M (-3,-9) and N (4,8). What is the approximate length of line segment MN??

    asked on August 30, 2011
  4. Chemistry

    2C10H22 + 31O2 = 20Co2 + 22H2O What kind of reaction is this?

    asked on February 19, 2012
  5. Physics

    During a baseball game, a batter hits a high pop- up. If the ball remains in the air for 6.0s, how high does it rise? Hint: calculate the height using the second half of the trajectory

    asked on September 19, 2012
  6. Math

    Using 6 as one of the numbers, write a fact family with only two facts. 6 x 7=42 42/7=6 Is correct my answer?

    asked on May 16, 2012
  7. math

    Juno is taking a taxi. The table represents a linear function and shows the amount she owed after various numbers of miles traveled. Is the rate of change 2.25? Amount Juno Owed for a Taxi Miles Amount Owed (dollars) 1 2.5 2 4.75 3 7 4 9.25 5 11.5 Yes,

    asked on November 20, 2019
  8. Algebra

    A restaurant bill of $2.85 was paid using quarters and dimes only. If twice the number of quarters is 6 less than 4 times the number of dimes, how many quarters were used?

    asked on February 19, 2019
  9. Chemistry

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked on September 9, 2015
  10. Physics

    1. How does displacement change with time for a falling object? How might you describe the mathematical relationship between the distance and time of a falling object? Explain the answer using your data, graphs, and kinematic equations.

    asked on January 15, 2013
  11. chem-Am I Right????

    For 0.10 M ZnCl2 and 0.10 M KAl(SO4)2, find:? a) spectator ions (if any) b) ions expected to hydrolyze (if any) c) net ionic equation for hydrolysis d) expression for equilibrium constant (Ka or Kb) e) value of Ka or Kb My answers are: a) Cl- ; K+ ; SO4^2-

    asked on October 19, 2010
  12. Social Studies

    What is the national bird of Cameroon?

    asked on November 29, 2007
  13. Math 12

    How do you solve -6[cot(2pi/3)-cot(pi/3)]?

    asked on February 28, 2016
  14. English

    Reread the following paragraphs from King's letter, paying attention to the way that he structures his ideas: Paragraph 2 of 12 In any nonviolent campaign there are four basic steps: (1) Collection of the facts to determine whether injustices are alive;

    asked on December 4, 2015
  15. Math calculus 2

    Let S be the region of the xy-plane bounded above by the curve ((x^3)*y)=64, below by the line y=1, on the left by the line x=2, and on the right by the line x=4. Find the volume of the solid obtained by rotating S around (a) the x axis (b) the y axis (c)

    asked on February 15, 2018
  16. Calculus

    Use a Linear Approximation to estimate sin(64∘)−sin(60∘)≈

    asked on November 5, 2017
  17. Algebra

    Write an expression that is equal to 3x2 1/4

    asked on January 14, 2017
  18. math

    Helga's summer job put her in charge of the local soccer and basketball programs. To get ready, she ordered 50 balls, making sure there were 10 more soccer balls than basketballs.

    asked on September 7, 2016
  19. Math

    Find the 8th term of an exponential sequence whose first term is 3 and whose common ratio is 2

    asked on March 1, 2016
  20. Physics

    1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a.

    asked on December 21, 2015
  21. math

    An equation is shown below: 3 over 2 multiplied by x plus 7 over 2 equals 2 to the power of x What is the solution to the equation A.X=1 B.X=3 C.X=5 D.X=8 I think it could be d

    asked on December 8, 2015
  22. Math

    The figure is a parallelogram. If the area of triangle BCD is 15 square kilometers, What is the area of ABCD?

    asked on February 10, 2014
  23. social studies

    Where did the British first move acadians after exile from Acadia ? a) to many of the British colonies in small groups b) to France a s whole group c) Louisiana as a whole group d) all over Europe in small groups

    asked on September 20, 2013
  24. statistics

    The weight of a product is normally distributed with a mean of 4 ounces and a variance of .25 "sq ounces." The company wants to classify the unit as a scrap in a maximum of 1% of the units if the weight is below a desired value. Determine the desired

    asked on June 28, 2012
  25. math

    Explain It What is the purpose of using fraction strips and a 1 strip?

    asked on January 12, 2012
  26. AP United States History

    Instructions: Use the following documents (most) and your knowledge of the period to answer the question. Question: Evaluate the following statement: "By the time of Abraham Lincoln's election in November of 1860, there was significant support in the North

    asked on March 23, 2011
  27. Math

    An equation is modeled below using algebra tiles. Which value of x makes the equation true? A. x = 7 C. x = 13 B. x = -7 D. x = -13 The algebra tiles: There is a large block with an "x." Next to it are 3 small blocks with "1" inside of it. Then there is an

    asked on May 28, 2020
  28. Math

    The following list has a median of 43. What would be the new median if 21 was added to the list?? The list is: 31, 48, 50, 23, 28, 52, 57, 38, 56, 27

    asked on May 21, 2020
  29. social studies

    In a 200 word essay explain why people 2,000 years ago and still today "revere" the famous? Why do you think our fascination with celebrities is different from the Roman worshiping Gods, what similarities are there? Is there any danger in our culture, what

    asked on February 27, 2020
  30. math

    A race car has a top speed of 330 km/hr. What speed is that in miles/sec?

    asked on October 24, 2018
  31. Algebra

    LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

    asked on March 1, 2017
  32. Algebra

    LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

    asked on March 1, 2017
  33. science

    Tom is marking the locations of active volcanoes on a world map. Explain how the locations of the volcanoes are related to Earths plates. can you please explain this to me, I don't understand....thx

    asked on February 9, 2017
  34. algebra

    The United States Department of Agriculture reported in Vegetables and Melons Outlook in 2007 that the average America consumes about 7.4 x 10^3 potato chips in a year. Since Idaho had about 1.5 x 10^6 people in 2007, how many potato chips would Idaho

    asked on October 8, 2016
  35. alegebra

    (1.08 x 10^-3)(9.3 x 10^-3)

    asked on October 4, 2016
  36. math

    find each unit rate. Round to the nearest hundredth if necessary. 8 batteries in 3 months

    asked on September 3, 2014
  37. math

    How many 1/4 pound burgers can be made from 2 1/2 pounds of beef?

    asked on December 4, 2013
  38. Math

    25-n=17

    asked on September 13, 2013
  39. US History

    18. Which U.S. president made the following proposal? "A general association of nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small states

    asked on December 18, 2012
  40. Math

    He said it to his brothers he said it to his sisters what did the witty raindrop exclaim to all the others??????

    asked on October 24, 2012
  41. language

    what is the literary device used in the statement? former indonesian president suharto was sometimes referred to as a puppet master.

    asked on September 5, 2012
  42. physics

    A 0.2 kg sponge is dropped from rest , pulled down by gravity. How fast will it be traveling in 6.0s , if a 0.5 N force of air resistance acts on it

    asked on March 28, 2012
  43. physics

    A fully loaded Saturn V rocket has a mass of 2.92*10^6. Its engines have a thrust of 3.34*10^7 N What is the unbalanced force of gravity on the rocket at blast off What is the unbalanced force on the rocket at blast off

    asked on March 28, 2012
  44. physics

    A block of wood of mass 6.0 kg slides along a skating rink at 12.5 m/s^2 [w] . The block slides onto a rough section of ice that exerts a force of 30 N force of friction on the block of wood. The acceleration of the block of wood is 5.0 m/s^2 [E] and it

    asked on March 27, 2012
  45. Math

    Sandra was thinking of a quadrilateral. All 4 sides are the same length and are parallel. There are 4 right angles. Which quadrilateral is she thinking of?

    asked on February 9, 2012
  46. math

    write a subtraction problem that has a difference of 1/6.

    asked on January 24, 2012
  47. math

    An arena seats 7,893 people. The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?

    asked on November 15, 2011
  48. Spanish

    Enter the correct conjugation of the "-ar" verb for each sentence: 1. Tú y yo _____ cuadernos nuevos. (necesitar) 2. ¿_____ ustedes los nombres de mis amigos? (olvidar) 3. Nicolás _____ un regalo a su abuela. (presenter) 4. Yo _____ a Dios. (alabar)

    asked on January 31, 2011
  49. science

    What is a therapeutic cloning and reproductive cloning?

    asked on August 12, 2009
  50. science

    How is recombriant DNA technology used in medicine?

    asked on August 12, 2009
  51. Algebra

    The formula C = 5/9(F-32) can be used to convert Fahrenheit temperatures to Celsius temperatures. a. Gold is liquid for Celsius temperatures C such that 1063 degrees (less than or equal to) C < 2660 degrees. Find a comparable inequality for Fahrenheit

    asked on January 27, 2009
  52. business

    A company is considering a $250 million investment in land that it will hold for 25 years. The pretax net cash flows are $40 million per year and land prices are expected to rise at a rate of 7% per year. The opportunity cost of capital is 13%, inflation

    asked on February 4, 2007
  53. Careers

    What career and job qualification can i get with these subjects? Maths lit,tourism,consumer studies,dramatic arts

    asked on January 22, 2020
  54. Physics

    A plane flies in a circle of radius 4,000 meters. The plane completes the circle in 2.5 minutes. What is the centripetal acceleration of the plane?

    asked on November 23, 2019
  55. Chemistry

    Data Electrodes: V Electrolyte: V(NO3)2 Amps: 6.0 Time (mins): 800 1. Calculate the charge in coulombs that passes through the cell during electrolysis. 2. What is the anode and cathode reaction of this cell? 3. Calculate the mass of metal deposited on the

    asked on March 24, 2019
  56. math

    What kind of angle will have a supplement but no complement? plz help I am so confused.

    asked on June 6, 2018
  57. Science

    I don't know anything to put for "Y" for Eukaryote. Help please.

    asked on February 27, 2018
  58. math

    After delivering all of those presents, the elves were ready to eat some cookies. 50% of the cookies were sugar, and the rest were gingerbread. After eating 1,600 cookies, the number of sugar cookies decreased by 20% and the gingerbread cookies decreased

    asked on January 8, 2018
  59. Calculus

    Let f(x)=sqrt(x+2) and use the Linear Approximation to this function at a=14 with Δx=0.3 to estimate f(14.3)−f(14)=Δf≈df=

    asked on November 5, 2017
  60. Calculus

    A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.8m^3/min. How fast is the water level rising when it is 2.7 m?

    asked on November 5, 2017
  61. Maths

    Find the largest no that divides 630 and 940 leaving reminders 6 and 4 respectively

    asked on June 6, 2017
  62. Maths

    Find the largest no that divides 630 and 940 leaving reminders 6 and 4 respectively

    asked on June 5, 2017
  63. Math

    Which type of graph would you use to display the data for each of the following purposes: a. To predict the world's population growth in the future b. To compare the percent of Canada's population with each blood type c. To look for a relationship between

    asked on March 5, 2017
  64. Albegra

    diego wrote one equation to find a missing angle measure.Write three more equations to solve the same problem 180 grade - -------=48 grade

    asked on March 2, 2017
  65. Maths, triangle trigonometry

    P, Q and R are three fire towers. Q is 40 km N 72°E of P and R is 48 km S 55° E of P. Find the distance between R and Q and bearing of R from Q.

    asked on February 26, 2017
  66. Álgebra

    Matt cut a circle into 8 equal sections. He drew an angle that measures the same as the total measure of 3 of the sections in the circle. What is the measure of the angle Matt drew?

    asked on February 22, 2017
  67. Math

    Gabriel has read 150 pages of a 236 page book.If he reads 9 pages a day, in how many days will he finish the book?

    asked on January 31, 2017
  68. Social Studies

    "Explain how transportation innovations of the time period affected migration in the U.S" This question is really confusing to me and I need help wording it :-)

    asked on January 16, 2017
  69. Math

    The total weight of a basket of 9 melons is 19 kilograms 250 grams. If basket weighs 1 kilogram 250 grams,and each melon had the same weighs,how much does each melon weigh?

    asked on January 7, 2017
  70. Math

    The total weight of a basket of 9 melons is 19 kilograms 250 grams. If basket weighs 1 kilogram 250 grams,and each melon had the same weighs,how much does each melon weigh?

    asked on January 7, 2017
  71. sceinc

    you exert the same force on two objects of different masses .whitch object will have greater acceleration

    asked on January 3, 2017
  72. algebra

    Find the pattern and fill in the missing entries. in(x) | out(y) | 23 2 | 8 -2 | -4 8 | 26 0 | ? ? | 302 1.5 | ?

    asked on October 26, 2016
  73. algebra

    (4 x 10^-5)^-6

    asked on October 5, 2016
  74. Math

    Use 18 coins to make $1.75 I NEED LOTS OF HELP IM JUST IN FOURTH GRADE AND MY TEACHER NEVER TAUGHT ME THIS MY TEACHER IS MRS MCABE

    asked on June 4, 2016
  75. science

    Which of the following is the best instrument to use to prepare a solution

    asked on May 19, 2016
  76. History

    Hello, recently our grade was assigned a history project on the California gold rush. One of the topics we have to include is the 5 mining towns in California. So far, I know 2 which are San Francisco and Sacramento. Can you help me find the rest? Thank

    asked on April 22, 2016
  77. utah state history

    Please help Fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of

    asked on April 21, 2016
  78. utah state history

    fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of (blank) made

    asked on April 13, 2016
  79. Calculus Applied Integrals

    A cylindrical tank of 22.1m high with radius 12.2m is filled to 10m high with water. How much work must be done to pump all the water out of the tank? (density of water is 1000\ kg/m^3) I used similar triangles somewhere in my calculations to find the

    asked on March 24, 2016
  80. math

    Algebraic expression f - 7.3

    asked on March 23, 2016
  81. Life Science

    The process by which cellular material is divided between two new cell. (2 words)

    asked on March 14, 2016
  82. Calculus Derivatives

    Determine the concavity of f(x)=xlnx I end up with F''(x)=1/x, where it would be concave up when x>0 and concave down when x

    asked on March 5, 2016
  83. Calc Derivatives

    Find the critical points of (4x-3)/(3x^(1/2))

    asked on March 5, 2016
  84. Calculus

    1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my

    asked on January 16, 2016
  85. Calculus

    Since f(x)=√(x-3) has an absolute minimum of 0 does its critical point exist? I'm really confused because someone mentioned that f(x)=√(x+3) does not have a critical point. Does that mean that if there is an end point there, there can't be a critical

    asked on January 12, 2016
  86. math

    hi! so I have almost finshed solving a math equation i'm just stuck on this one last thing: x^3=3.85x10^-17 and I don't know how to isolate for x! plz help

    asked on January 11, 2016
  87. Calculus

    For the following function, find the relative max's or min's using any method. I'm having a hard time finding the critical points...

    asked on January 10, 2016
  88. Calculus

    For the function below, determine the intervals of concavity: f(x)=xlnx I tried doing it but the second derivative would always be f''(x)=1/x, so it would be concave up at x>0 and concave down at x

    asked on January 10, 2016
  89. Math

    Sara has some fish,2 birds, and 5 hamsters.she has 6 fewer hamsters than fish. How many fish does she have?

    asked on October 20, 2015
  90. Chemistry

    Hello! I was working on my Chemistry HW about metric conversion. Can you please check to see if my answers are correct? I was having a hard time converting, and I think I finally figured it out. 1 microliter= 0.000001 liters 1 mL= 1,000 microliters 100mL=

    asked on September 8, 2015
  91. math

    If you take 13 boxes to postoffice and each weigh 2/3 of pound what is total weight

    asked on April 16, 2015
  92. Math

    Which is greater: three sets of (5 - 2) or two sets of (2 + 3)? Draw diagrams to support your conclusion.

    asked on March 12, 2015
  93. chemistry

    Calculate the mass of ethanol that must be burnt to increase the temperature of 150g of water by 75 degrees celsius, if exactly 75% of the heat released by this combustion is lost to the surroundings. Also it is given that the heat of combustion of ethanol

    asked on February 7, 2015
  94. Math

    Will, Micah, and Sue went to dinner. Will paid 1/3 of the dinner bill. Micah and Sue paid in the ratio 2:5. If Sue paid $6 more than will, how much di the dinner cost?

    asked on February 1, 2015
  95. Math

    Addison is making caramel apples. She has 2 1/2 bags of apples. One full bag has 8 apples, and each apple weighs 5 ounces. Write an expression that could be used to find the total number of ounces of apples Addison has. Then find the total number of

    asked on January 21, 2015
  96. Math

    Multiplication is defined as repeated addition. Use the word repeated to define exponential form. Justify your reasoning.

    asked on January 17, 2015
  97. math

    Manny makes dinner using 1 box pasta and 1 jar of sauce. If pasta is sold in packages of 6 boxes and sauce is sold in packages of 3 jars what is the least number of dinners that Manny can make without any leftovers?

    asked on December 21, 2014
  98. Math

    Mount-Rush more is a sculpture that was curved using a model with a scale of 1 inch: 1 foot. Sculpture Refer to the information at the above. Find the scale factor and actual height of George Washington's face on the sculpture if the height of the the

    asked on December 21, 2014
  99. chemistry

    To make a phosphorus fertilizer, agricultural companies use the following reaction: Ca3P2O8 + 2H2SO4 --> CaH4P2O8 + 2CaH4SO6 (fertilizer) If 1.50 * 10^4 grams of H2SO4 are reacted with excess Ca3P2O8 and H2O, how many grams of fertilizer can be made? Hi, I

    asked on November 29, 2014
  100. English

    How does Hamlin Garland's "The Return of a Private" exemplify the characteristics of regionalism?

    asked on November 14, 2014

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