Questions Asked on
March 20, 2018

  1. math

    Find the angles of the rhombus if the ratio of the angles formed by the diagonals and the sides is 4:5.

    asked by Anonymous
  2. physics

    A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough

    asked by katie
  3. Math 201

    I am having problems with this question in my math class. Consider a student loan of ​$25,000.00 at a fixed APR of 12% for 25 years. a. Calculate the monthly payment. The monthly payment is $263.31 b. Determine the total amount paid over the term of the

    asked by Stephanie
  4. physics

    10. A 3 kg block moves up a 40° incline with constant speed under the action of a 26N force acting up and parallel to the incline. What magnitude force must act up and parallel to the incline for the block to move down the incline at constant velocity?

    asked by Anonymous
  5. Math:)

    Explain why sin^-1[sin(3pi/4)] does not = 3pi/4 when y=sin(x) and y=sin^-1(x) are inverses. Any help on this question is greatly appreciated. Thank you!

    asked by girly girl
  6. Math

    The formula S=6a^2 can be used to find the surface area of a cube. if S=6cm^2, what is the side length,a, of each face 1cm 2cm 1/6cm 3cm

    asked by XX
  7. physics

    A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough

    asked by amanda
  8. Calculus

    A uniform layer of ice covers a spherical​ water-storage tank. As the ice​ melts, the volume V of ice decreases at a rate that varies directly as the surface area A. Show that the outside radius decreases at a constant rate.

    asked by Mike
  9. Chemistry

    A water chemist obtained a 250 ml sample from a nearby lake and fixed the oxygen on-site with alkaline solutions of MnSO4 and KI-NAN3. Returning to the laboratory, a 200 ml sample was analyzed by acidifying the sample with conc H2SO4 and then titrating

    asked by Dalal
  10. Chemistry

    1.If a solution absorbed violet light, what color would the solution appear to be? ________________ Calculate the concentration of a solution prepared by adding 15.00 mL of 2.00×10^−3 M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then

    asked by Naomi
  11. fraction

    31/2 + 11/2=

    asked by Jimmy
  12. Math:)

    Which trigonometric functions are equivalent to tan(theta)? Select all that apply. (2 answers) a. -tan(-theta)**** b. -tan(theta) c. tan(-theta) d. tan(theta+2pi)**** e. tan(theta+pi/2)

    asked by girly girl
  13. music

    the romantic period of music was known for? A. vibrant and unexpected key changes B. little use of dynamic changes. C. few notable composers D. minimal sense of storytelling I need help with all the questions

    asked by Anonymous
  14. Math:)

    Which functions have the same transformations as f(x)=2csc(x-1)-3? Select all that apply. (2 answers) a. f(x)=2(x-1)^2-3*** b. f(x)=[2(x-1)]/[x-3] c. f(x)=2sin(x-3)*** d. f(x)=2e^(x-1)-3 e. (x-1)^2+(y-3)^2=2

    asked by girly girl
  15. Chemistry

    For the reaction mole of HI is introduced into a vessel at constant temperature.calculate the no of moles of I2 when equilibrium is reached (Kc=0.0156) Plz help me and give complete solution

    asked by Faizan
  16. World History

    What was the function of high culture in Classical Athens?

    asked by Bethanie
  17. Physics

    A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). An object is placed to the left of the converging lens, and the final image produced by the two-lens combination lies 19.7 cm to the left of the diverging

    asked by Amy
  18. physics

    Two objects are placed on the edge of a circle. They move in opposite directions from the same starting point in order to collide with each other. The first object moves at 0.1 rad/s, and the second moves at 0.25 rad/s. If both objects have the same

    asked by arianna
  19. Math

    Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 5, 13, 21, 29, 37, 45 1)8n;800 2)8n-3;797 3)3n-8;292 4)5+8n;805 I think #4 is correct. Thank you.

    asked by Jamie M
  20. Math:)

    The data in the table represents the average number of daylight ours each month in Springfield in 2015, rounded to the nearest quarter-hour. Jan~9.5 hrs Feb~10.5 hrs Mar~12 hrs Apr~13.25 hrs May~14.5 hrs Jun~15 hrs Jul~14.75 hrs Aug~13.75 hrs Sep~12.5 hrs

    asked by girly girl
  21. History

    “...[The] said Cooper Hughs Freedman with his wife...are to work on said farm and to cultivate forty acres in corn and twenty acres in cotton, to assist in putting the fences on said farm in good order and to keep them so and to do all other work on said

    asked by Hi
  22. Chemistry

    The interaction energy between an ion pair diminishes with separation distance r as a function of 1/r, whereas the interaction energy between two rotating dipoles diminishes as 1/r6. This means that ion-ion interactions are much longer range than

    asked by Anonymous

    1× SDS Running Buffer For this exercise, you will need to prepare 1 L of 1x SDS Running Buffer. The final composition of this buffer is: 25 mM Tris, 200 mM Glycine pH 8.3, 0.1% (w/v) SDS 1. To a 1 L beaker, add 500 ml of distilled water. Place a magnetic

    asked by Samari
  24. maths

    What time will a runner take to run a distance of 8 km at a speed of 15 km/hr?

    asked by kumar
  25. chemistry

    6NH3 + 2H2BO3-3N2H4 + 2B+ 4H2O+ 2OH- name of the element oxidized:? name of the element reduced:? formula of the oxidizing agent:? formula of the reducing agent:? 3N2H4 + 2ClO3-3N2 + 2Cl-+ 6H2O name of the element oxidized:? name of the element reduced:?

    asked by natalie
  26. science

    a 3300 mf capacitor recquired to store 0.5mj of the energy.find the potential difference to which the capacitor must be charged?

    asked by lester
  27. Physics

    A sample of 8.02×10^−1 moles of nitrogen gas (γ =1 .40) occupies a volume of 2.00×10^−2 m^3 at a pressure of 1.00×10^5 Pa and temperature of 300K. The sample is isothermally compressed to exactly half its original volume. Nitrogen behaves as an

    asked by Anon
  28. Science

    What is a transport system in plants

    asked by Noor
  29. Math

    The coordinates of three vertices of a certain parallelogram are (5,2), 2,6) and (10,9). Give the coordinates of a fourth vertex. Then give the coordinates of another point that could be the fourth vertex.

    asked by Kathy
  30. Social studies

    how did the mayflower compact set a precedent for democratic government in North America? A) the mayflower compact recognize in a stab Lish that people had the power to govern. B) The Mayflower compact set up a religious monarchy with loyalty to King

    asked by Whoops
  31. IPC

    the planet mars is located 228 million kilometers (2.28x10^11m) away from the sun. if it takes the sun 760 seconds to reach mars how fast is light travelling???

    asked by Anonymous
  32. music

    I can’t get back to the page but thank you Ms. Sue. I went back and found each answer individually and wrote them down. hopefully you can forgive me.

    asked by Anonymous
  33. history

    In this discussion, you will discuss the ways in which the United States fought pool cold war economically, common, socially, and politically, and which message you believed were the most effective in combating communism

    asked by history help
  34. Math:)

    1. Evaluate tan[sin^-1(a)]. a. [sqrt(1-a^2)]/1-a^2 b. [sqrt(1-a^2)]/a c. sqrt(1-a^2) d. {a[sqrt(1-a^2)]}/1-a^2 I do not know the steps to find this answer and am not provided with a textbook. I have researched online some what, but I cannot seem to

    asked by girly girl
  35. Algebra

    How many small triangles are in a triangular grid that has 20 units on a side. Please show me a formula to figure it out . Thanks

    asked by Cheyenne
  36. mathj

    a box contains ten `pairs of shoes if four shoes are retired there are numeration (1 I) (2 I) (10 I) X is the set formed by 20 numbers Find the triplet Calculate probability P(Ai)

    asked by juanpro
  37. Algebra

    Evaluate these expressions N=4 N=-3 N=10

    asked by Kathy
  38. Science

    If a bird at sea level requires a speed of 30 mph to have enough lift to fly, how fast must it fly for the same lift at 20,000 ft?

    asked by Paul Barrett
  39. ss

    Provide 3 details on how the farming revolution helped civilizations develop. plz i need help on knowing what to write!

    asked by j-man lbj
  40. science

    Calculate the density of the wood?

    asked by moses
  41. ALGEBRA 1!!!! PLS HELP!!!!

    Ike's piggy bank contained only quarters and nickles. When he counted the money there was $21.65. If there were 121 more nickles than quarters, how many of each type of coin did Ike have in the bank?

    asked by guitarpick03
  42. Tech

    Okay, so I don't have Microsoft Word for mac, but my school usually uses word documents. I can access them, but I can't read comments or anything else. Please help?

    asked by Tordy
  43. English

    1. Mom jumps from the sound. 2. Mom jumps because of the sound. 3. Mom jumps _____ the sound. [ Does #1 mean #2? What is the meaing of 'from' in Sentence 1? What else can we use instead of 'from' in #3?]

    asked by rfvv
  44. ALGEBRA 1!!!! PLS HELP!!!!

    When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there??

    asked by guitarpick03
  45. ED tech

    i need to know how technology has impacted police officers.

    asked by unknown
  46. Math:)

    A weight is attached to a spring that is oscillating up and down. it takes 3 sec. for the spring to complete one cycle, and the distance from the highest to lowest point is 4 in. What equation models the position of the weight at time t seconds? a.

    asked by girly girl
  47. chemistry

    Calculate the concentration of a solution prepared by adding 15.00 mL of 1.92E−3M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then filled to the 50.00 mL graduation mark with distilled water.

    asked by Julie
  48. Math

    Subtraction with renaming Am very confused. Am trying to teach my little brother but am getting everything wrong. I have the right answer but the work does not add up to that. 6 - 3 2/5 I got 3 2/5 but the answer is 2 3/5 I don’t understand can you

    asked by Ali
  49. Chemistry

    Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion.

    asked by Naomi
  50. Math

    When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there??

    asked by guitarpick03
  51. Social studies

    When did the Romans take over Italy? A: By 500 BC B: By 267 BC C: 125 BC D: By 100 AD

    asked by Someone
  52. physics

    A wheel has an angular speed of 85 rev/s when it experiences a constant angular acceleration of 100 rev/s2 which causes it to spin FASTER. During this time the wheel completes 26 rev. Determine how long the wheel was experiencing this angular acceleration.

    asked by help!
  53. science

    Which motion causes night and day on Earth? A. the Sun’s motion around its axis B. Earth’s motion around its axis*** C. Earth’s motion around the Sun D. the Moon’s motion around Earth I think the answer is B, but am I correct?

    asked by ¯\_('-')_/¯
  54. Chemistry

    What is the slope of the standard curve? Absorbance Concentration (M) 0.330 6.00 x 10-4 0.264 4.80 x 10-4 0.198 3.60 x 10-4 0.132 2.40 x 10-4 0.0660 1.2 x 10-4 What is the slope of the standard curve?

    asked by Julie
  55. Geometry

    Please help! I can’t figure this out, I’ve got the equation but that’s about as far as I can get. I have to find C sin24/77=sinC/162

    asked by Jessica
  56. daily geography

    Denmark, Norway, Sweden , Finland, And Iceland compromise an area called____? Is the correct answer Scandinavia or Nordic countries? I have seen both and I'm not sure which is correct.

    asked by nicole
  57. Differential Equations

    We have a question: X'={{1,0,0} {-4,1,0} {3,6,2}}X; X(0)={-1,2,-30} I have worked out to the general solution but I don't think it's right. I have: X=C1 {0,0,1}e^2t + C2 {0,-1,6} e^t + C3 [{0,-2,6} + {0,-1,6}t] e^t this gives me x(t)=0....

    asked by Jefferson
  58. fine art

    Name the first established female artist and tell at what point she became recognized. I'm confused on this question. I don't know whether it would be Judith Leyster or Sofonisba Anguissola. My textbook doesn't say exactly and I can't find it when I google

    asked by huncho jack
  59. Tx History

    1. How did ranchers show ownership of the cattle? * 1 point They would put them in a pen near their home. They would brand them. They would tie them up and keep them nearby*** They would fence them in on their property. 2. The growth of the railroads

    asked by taytay
  60. Chemistry

    Estimate the dipole moment, in Debye units, of the HI molecule based on difference in Pauling electronegativity between the atoms.

    asked by Austin
  61. statistics

    A population has an average of 150,000 with a standard deviation of 27,000. A random sample of 81 items is chosen. What is the standard error?

    asked by anne
  62. chemistry

    when iron III oxide reacts with vinegar? Is either of the materials reduced or oxidized? Vinegar is not oxidized or reduced right ? Because it still has an oxidation state of negative 1? The only thing that is reduced is Fe because it now has an oxidation

    asked by Anonymous
  63. Math

    From a point A, the angle of elevation to the top of a building is 50°. From point B which is 11 m closer to the building the angle of elevation to the top is 63°. How far is point B from the top of the building? How tall is the building?

    asked by Jessie
  64. Calculus

    Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the x-axis over the given interval. g(x) = 2x^2 − x − 1, [3, 5], 4 rectangles __ < Area < __

    asked by si
  65. Science

    0.005 mol of non-electrolyte was dissolved in 50g of benzene. Calculate depression of a freezing point of this solution

    asked by Ankur
  66. Social Studies

    Compare the U.S. response to Soviet actions in Afghanistan with the U.S. response to Soviet actions in Poland. A. The United States condemned Soviet policy towards both countries. B. The United States adopted a policy of detente in both countries C. The

    asked by I need help
  67. Math

    There are 5 chaperones for every 14 kids on a field trip. If there are 152 people on the trip, how many of them are adults?

    asked by Tee
  68. Physics

    A missle is fired with a launch velocity of 4600 m/s at a target 1932 km away, at what angle must it be fired to hit the target? How long the missle is in the air before hitting the target?

    asked by Rusty
  69. English

    1. Less than 5,000 people live here. [Does 'less than 5,000' include '5,000'?] 2. More than 5,000 people live here. [In math, does 'more than 5,000' include '5,000'?]

    asked by rfvv
  70. math

    Each ticket to a school dance is $4. The total amount collected in ticket sales is $332. Write and solve an equation to find the number of students attending the dance.

    asked by robin
  71. Physics

    A sealed container of volume V =0 .10m^3 holds a sample of N =3 .0×10^24 atoms of helium gas in equilibrium. The distribution of speeds of the helium atoms shows a peak at 1.1×10^3 ms^−1. (i) Calculate the temperature and pressure of the helium gas.

    asked by Anon
  72. math

    A hurricane has wind speeds that are greater than or equal to 74 miles per hour. Write an inequality to represent the possible wind speeds during a hurricane.

    asked by robin
  73. math

    One third of the viewers at a movie opening rated the movie as Good or Very Good. Thirty-five people rated it Good and twenty people rated it Very Good. Write and solve an equation to find the number of people p in the audience.

    asked by robin
  74. physics

    Did I do a) and b) right? The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. Disregard any pulley mass or friction in the pulley and let M = 2 kg. a) What is the magnitude of the

    asked by checking
  75. chem

    If the heat of combustion for a specific compound is -1160.0 kJ/mol and its molar mass is 90.75 g/mol, how many grams of this compound must you burn to release 823.00 kJ of heat?

    asked by rachel
  76. chem

    A researcher studying the nutritional value of a new candy places a 3.50-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.23 °C. If the heat capacity of the calorimeter is 31.30

    asked by rachel
  77. R M E

    Discuss 5 ways we can teach religious and moral education to avoid indoctrination

    asked by Michael Assifuah
  78. math

    What is 5x3

    asked by may
  79. math

    what 30% of a 100

    asked by may