Popular questions and responses by Madi
  1. Spanish

    Fill in the blanks with the subjunctive form of the verbs. 1. Me alegro de que el ecoturismo (ser) un buen negocio (business). 2. Es una lástima que tú no (reciclar) el vidrio. 3. No crees que ellos (querer) usar energía solar. 4.Ojalá todos nosotros

    asked on July 3, 2012
  2. Spanish

    Fill in the blanks with words from the box. estés molesta plástico recicle sea Es posible que reciclar (1) una de las mejores formas de proteger el medio ambiente. Quizás no te das cuenta (you're not aware), pero reciclar vidrio, aluminio y (2) ahorra

    asked on July 3, 2012
  3. math

    How many people were at a party if There were 105 handshakes at a party and if each person at the party shook hands with exactly once with every other person. The answer is 15. How do I write the problem?

    asked on October 25, 2010
  4. statistics

    A credit card company estimates that the average credit card balance of Americans is $3,210. A statistics student wants to know whether this is true for citizens of her home town. Which hypothesis test would be most appropriate for addressing this

    asked on March 14, 2015
  5. Math

    1. Classify the triangle according to side length and angle measurement 2. Classify the triangle according to side length and angle 3. Classify the triangle with side lengths 4,4, and 4 4. Classify the triangle with the measuring 69,42, and 68, 5.

    asked on February 5, 2018
  6. Biology

    Which of the following statements correctly compares the functions of a plant's roots and stem? The stem contains a high percentage of cells that provide structural support, unlike the roots. The stem is the first part of the plant to emerge from a seed,

    asked on September 28, 2012
  7. Math

    A prize machine randomly dispenses small toys. There are 1515 prizes left: 55 bouncy balls, 33 toy cars, 22 stickers, and 55 dinosaurs. Kai gets 22 prizes. What is the probability that they are both toy cars?

    asked on April 10, 2017
  8. Biology

    The Kingdom Monera has been separated into two domains, the Archaea and the Bacteria. Which of the following was most important in prompting scientists to change the way these organisms were classified? a.)Major differences were discovered in the structure

    asked on May 27, 2012
  9. Physics

    A 4.17 g bullet moving at 506.1 m/s penetrates a tree trunk to a depth of 4.64 cm. a) Use work and energy considerations to find the magnitude of the force that stops the bullet. Answer in units of N. b) Assuming that the frictional force is constant,

    asked on November 18, 2015
  10. Physics

    A block of mass 4 kg, which has an initial speed of 2 m/s at time t = 0, slides on a horizontal surface. Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J. If a constant friction force of magnitude 5

    asked on November 18, 2015
  11. Earth Science -

    In a model ensemble system, what do meteorologists change each time they run a simulation of the same model?(1 point) the initial conditions the mathematical equations used the predicted forecast the range of possible outcomes

    asked on January 22, 2020
  12. Earth Science

    1. Which provides the most direct source of energy for a hurricane?(1 point) A warm ocean water B heating of the air by the sun C friction with the ground D rising, swirling winds 2. How does upwelling affect the weather of a coastal region?(1 point) A The

    asked on January 22, 2020
  13. Earth Science

    In a small bay that contains a coral reef, the water temperature has remained the same for decades. Recently, scientists discovered that the water temperature in the bay has increased by 1°C. Which is most likely to happen?(1 point) The corals in the reef

    asked on January 17, 2020
  14. Earth Science

    What provides evidence of an increase in animal species at the same time that atmospheric oxygen concentrations increased?(1 point) rust deposits anaerobic organisms fossil record stromatolites

    asked on January 17, 2020
  15. World Geography - Africa

    These countries were considered to be the only independent areas from European control in the 1800s. A. Nigeria & Rwanda B. Ethiopia & Nigeria C. Ethiopia &Liberia D. Nigeria & Mozambique Thank you!

    asked on August 28, 2019
  16. Chemistry

    An empty aerosol-spray can at room temperature (20 ◦C) is thrown into an incinerator where the temperature reaches 458◦C. If the gas inside the empty container was initially at a pressure of 1 atm, what pressure did it reach inside the incinerator?

    asked on March 19, 2017
  17. Physics

    A 59-kg housepainter stands on a 16-kg aluminum platform. The platform is attached to a rope that passes through an overhead pulley, which allows the painter to raise herself and the platform. (Ignore the mass of the pulley and any friction in the pulley.)

    asked on October 4, 2012
  18. Government

    This case came about because President Marbury refused to honor the last-minute judicial appointments of Pres. Madison. A) True B) False 2. Marbury wanted the courts to issue of writ of mandamus, a court order forcing Jefferson to give him his commission.

    asked on July 21, 2012
  19. math

    A total of $32000 is invested in two municipal bonds that pay 5.75% and 6.25% simiple interest. The investor wants an annual interest income of $1900 from the investments. What amount should be invested in the 5.75% bond?

    asked on April 22, 2020
  20. Statistics

    In the Dominican Republic in August, the distribution of daily high temperature is approximately normal with mean 86 degrees Fahrenheit (°F). Approximately 95% of all daily high temperatures are between 83°F and 89°F. What is the standard deviation of

    asked on April 1, 2020
  21. German

    Fill in the blanks with the following phrases: Answer Items; A. einen Rucksack B. ein Rucksack C. einen Bleistift D. ein Bleistift E. das Buch Wo ist (a pencil)? Gibt es (a pencil)? Ich habe (a backpack)? Das ist (a backpack)? Siehst du (the book)? - E.

    asked on December 10, 2019
  22. Algebra

    30. Write an equation in point-slope form for the line through the given point with the given slope. (-7,9); m=4/5 A. y+7= 4/5(x-9) B. y-7=4/5(x+9) C. y-9=4/5(x+7 D. y+9=4/5(x-7)

    asked on November 26, 2019
  23. Science

    1. Which accounts for the highest water withdrawals in the United States? A.mining B. industrial uses C. irrigation D. thermoelectric power 2.Which is the most prevalent source of agricultural water pollution? A. pesticides B. nutrients C. irrigation D.

    asked on November 6, 2019
  24. Earth Science

    Why did George Washington support the construction of canals on the James River near Richmond? He wanted to be able to ship goods to and from west of the Appalachian Mountains. The canals could be used to generate electricity to power Richmond. He owned

    asked on November 1, 2019
  25. Earth Science

    At which type of plate boundary would a string of small volcanic islands most likely form? A. convergent ocean-ocean boundary B. divergent ocean-ocean boundary C. convergent ocean-land boundary D. transverse boundary

    asked on September 5, 2019
  26. Algebra

    The number of pizzas Jason makes on an average Saturday night at Rocky Coast Pizza Company is 17 less than twice the number of pizzas Alia makes. Jason makes 147 pizzas. Choose the equation you would use to find the number of pizzas, n, that Alia makes.

    asked on August 28, 2019
  27. Science - Waves & Electromagnetic Radiation

    What is happening in the diagram ; *my attempt to describe.* There is a modern sail boat on the surface of the water, point A is a set of waves (they look like the curved lines on per say your volume icon; ))) ) that go down to a boat wreck(point B) on the

    asked on May 17, 2019
  28. Geometry

    So, I'm doing Surface Area of a Cone, L= 7in R= 8in I calculated B (pi * 8^2) so B (also known as Area of Circle) = 200.96 Now I'm working on SA and a little confused, SA=B+LA =pi*8^2 + pi*8*7=11,429.6 but the next step in my equation says I should have 2

    asked on May 17, 2019
  29. Calculus

    1. use the definition mtan=(f(x)-f(x))/(x-a) to find the SLOPE of the line tangent to the graph of f at P. 2. Determine an equation of the tangent line at P. 3. Given 1 & 2, how would I plot the graph of f and the tangent line at P if : f(x)=x^2 +4,

    asked on June 2, 2018
  30. Chemistry

    An experiment requires 0.3 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.3 M base? Answer in units of mL

    asked on April 22, 2017
  31. Math

    36 is .9% of what number?

    asked on February 21, 2017
  32. Math

    There are 144 people in an audience. The ratio of adults to children is 5 to 3. How many are adults? PLEASE HELP!

    asked on January 24, 2017
  33. physics

    Two students on roller skates stand face-toface, then push each other away. One student has a mass of 95 kg and the second student 60 kg. Find the ratio of the magnitude of the first student’s velocity to the magnitude of the second student’s velocity.

    asked on February 16, 2016
  34. Physics

    A box of mass m2 = 3.1 kg rests on a frictionless horizontal shelf and is attached by strings to boxes of masses m1 = 1.6 kg and m3 = 2.6 kg as shown below. Both pulleys are frictionless and massless. The system is released from rest. After it is released,

    asked on October 3, 2012
  35. 9th grade

    What is an example of natural selection in everyday life?

    asked on September 17, 2010
  36. science

    The enzyme that opens up the DNA double helix during replication.?

    asked on May 12, 2011
  37. chemistry

    for this reaction: 2NO + heat N2 +O2 which way would the equillibrium shift if catalyst is added?

    asked on December 6, 2007
  38. Algebra

    I can't understand this. Simplify using only positive exponents: (a2b[]7c4)/(a5b3c[]2) Please help ;_;

    asked on January 21, 2020
  39. Earth Science

    A coral reef has thrived near a coastline for thousands of years. Over the last decade, climate change has caused sea levels to rise. The coral reef is now deeper under water. Which sentence accurately describes the effects of this change? Select the two

    asked on January 16, 2020
  40. Math

    15% of 200

    asked on December 12, 2019
  41. geometry

    find measure of BCD

    asked on December 11, 2019
  42. Statistics

    For a t distribution with 16 degrees of freedom, find the area, or probability, in each region. c. To the left of -1.746. (Use 2 decimals.) d. To the right of 2.583. (Use 2 decimals.) e. Between -2.120 and 2.120. (Use 2 decimals.) f. Between -1.746 and

    asked on December 4, 2019
  43. Earth Science

    In 3–5 sentences, identify one human activity that has increased the amount of lead in drinking water. Then explain the water filtration method best suited to remove lead from the drinking water supply.

    asked on November 25, 2019
  44. Algebra

    This is my final question for my Sample Work. Sorry it's on Brainly again, there is an image attached. The question is; "What is the inequality of the Graph?" ht tps:// 13959389 (Remove the spaces in the link.)

    asked on November 25, 2019
  45. Algebra

    46. Are the graphs of the equations below parallel, perpendicular or neither? y=2/5x+3 and y=3/5x-4 Explain.

    asked on November 22, 2019
  46. German

    !! You must have taken this class to answer this question because it requires hearing the audio, I cannot download the audio at all, trust me I've tried. !! I have listened over & over and I just can't decipher it. Wo arbeitet sie? Wann arbeitet sie? Warum

    asked on November 15, 2019
  47. Algebra

    write an equation in point-slope form for the line through the given point with the given slope. (-4,-2); m=-1/2 A. y+2=-1/2(x-4)** B. y+2=(-1/2)x-4 C. y+2=-1/2(x+4) D. y-2=-1/2(x-4)

    asked on November 8, 2019
  48. Algebra

    1. For the data table, does y vary directly with x? If it does, write equation for the direct variation. x|y 10|15 16|24 20|30 A. Yes; y=1.5x B. Yes; y=2x ** C. Yes; y=x+5 D. No there is no direct variation. 2. For the data table, does y vary directly with

    asked on November 8, 2019
  49. Algebra

    I really really need help, I'm officially stuck. I've done half the project. Here's a link so the images are included; h ttps: //brainly. com/question/13760320 Question: C. What equation models the data? What are the domain and range of the equation? Do

    asked on November 6, 2019
  50. English

    According to the author of "Hip-Hop Planet", which of the following increased as hip-hop music became more commerical? A. The assassinations of African American leaders. B. The riots in major cities, such as the one in Paris, which was a result of

    asked on October 23, 2019
  51. Science

    What conclusion did the researchers from University of California San Diego reach regarding the best type of material to use for beach nourishment? Sandy areas of a beach should alternate with cement areas to prevent erosion. Large, coarse grains of sand

    asked on October 14, 2019
  52. Algebra

    hElp, I don't understand at all. 3. Complete the table and state the rule. 0 | 0 | 3 2 | 3 | 9 | 5 | 15 6 | Please help. :'v

    asked on September 16, 2019
  53. Earth Science

    How have phosphate minerals most affected human activity? A. Many people left their homes to seek wealth from phosphate mining in the 1800s. B. Phosphate mining operations have ceased due to environmental impacts.*** C. Using phosphate minerals in

    asked on September 9, 2019
  54. Algebra

    I'm re-doing a test for finals and I was working on this question, my teacher said to use radius since I originally did the diameter power of 2. Shape: Cylinder | Height: 27 m | Diameter: 34 m So the original equation; 3.14(pi) * 34^2 * 27 = 98055 My NEW

    asked on May 17, 2019
  55. Math - Help!

    Mrs. Higgins' Home Economics class collected data on the number of chocolate chips in cookies for two different brands, as shown in the dot plots below. The mean absolute deviation for each brand is 0.8. The difference between the mean number of chocolate

    asked on May 16, 2019
  56. algebra

    I have the question posted here ~ ht tps:// brainly .com/question/12664261 An image is attached, I really can't understand the perimeter of the triangle. triangle #1 = a= 18 b= 3 c= 42 triangle #2 = a= 9 b= 21 c=9 I tried calculators but they don't work.

    asked on May 15, 2019
  57. Math

    Mr. Williams just finished grading his science exams. The class average score on his exam was 79%. However, he forgot to grade John's paper. John scored an 86% on the exam. What is going to happen to the class average, once he includes John's score? A. The

    asked on May 10, 2019
  58. Math

    Pablo averaged 17.3 points for the first 6 basketball games. In his 7th game, he scored 24 points. Which of these is a reasonable conclusion about Pablo’s scoring average? A. His scoring average after 7 games was closer to 24 than to 17.3. B. His scoring

    asked on May 10, 2019
  59. Mathematics

    ( x + 8.92) - (0.75 - y ) + z = 11.89 X Options = -5.67 OR 5.67 Y Options = 1.25 OR -1.25 Z Options = -3.2 OR 3.2

    asked on May 8, 2019
  60. Math

    Property taxes are placed on the tax roll based on a property's assessed value. If a tax district has a tax rate of 0.4%, then what is the tax owed on a house with an assessed value of $235,000? A. $940 B. $94,000 C. $9,400 D. $94

    asked on May 8, 2019
  61. Algebra

    Find the degree of -5w^3 -4w^2 +7w + 16. I don't understand.

    asked on May 6, 2019
  62. Algebra

    Please Help! Which quadratic rule represents the data in the table? x -1, 0, 1, 2, 3 y 6, 5, 6, 9, 14 a. y= -2x^2 + 5 b. y= -x^2 + 5** c. y= x^2 - 5 d. y= x^2 + 5

    asked on May 3, 2019
  63. History

    {This isn't a test or quiz, it's personal curiosity, thank you!} What career or degrees are similar to archeology & paleography?

    asked on March 14, 2019
  64. Texas State History

    What is absolute chronology A a chronology listing of specific dates B a detailed summary of a historic event C a listing of events that occurred during the same time period D a timeline that has been verified by professional historians.

    asked on October 2, 2018
  65. Statistics

    A student group claims that first year students at a university study 2.5 hours (150 minutes) per night during the school week. A skeptic suspects that they study less than that on average. He takes a random sample of 30 first year students and finds that

    asked on May 23, 2018
  66. Physics

    A vector has a magnitude of 3.50m and points in a direction that is 145 degree counter wise from the x-axis. find the x and y components

    asked on July 18, 2017
  67. Someone please help!!! Math

    Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100°-Many b)A right triangle with three congruent sides-one c)A scalene triangle with side lengths of 7 cm, 3

    asked on May 23, 2017
  68. math

    Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100° b)A right triangle with three congruent sides c)A scalene triangle with side lengths of 7 cm, 3 cm, and 9

    asked on May 23, 2017
  69. Math

    If you roll a six-sided die times, how many possible outcomes are there?

    asked on April 10, 2017
  70. Math

    50 is what percent of 125? ___% I got 2.5 but I know for a fact that's not write cause I checked.

    asked on March 14, 2017
  71. CHEMISTRY: HESS'S LAW need help!

    I'm just overly confused on how to begin this especially with the fractions... please show step by step if you could. Quiz very Soon! Example A: H2(g)+1/2 O2 (g) ----> H2O(l) ... ΔH= -285.8 kJ N2O5(g) + H2O(l) -----> 2HNO3(l) ΔH= -76.56 kJ 1/2 N2(g) +

    asked on February 28, 2017
  72. Chemistry

    Sarin is a nerve gas with a chemical formula of C4H10FO2P. What is the mass of one molecule of sarin?

    asked on January 22, 2017

    Write an equation that includes division that relates the number of minutes a sperm whale can stay under water.🤔

    asked on March 10, 2016
  74. physics

    A(n) 0.251 kg soccer ball approaches a player horizontally with a speed of 15.8 m/s. The player illegally strikes the ball with her hand and causes it to move in the opposite direction with a speed of 27.3 m/s. What is the magnitude of the impulse

    asked on February 16, 2016
  75. physics

    A(n) 23000 kg freight car is rolling along a track at 2.8 m/s. Calculate the time needed for a force of 1960 N to stop the car. Answer in units of s.

    asked on February 16, 2016
  76. physics

    why , regardless of the magnitude of the initial velocity, the maximum horizontal displacement for a projectile occurs when the angle is 45 degrees. Specifically, what happens when the angle is increased or decreased. How would you mention vector

    asked on February 2, 2016
  77. Physics

    The efficiency of a pulley system is 47 percent. The pulleys are used to raise a mass of 47 kg to a height of 7.0 m. The acceleration of gravity is 9.81 m/s 2 . What force is exerted on the rope of the pulley system if the rope is pulled for 28 m in order

    asked on November 18, 2015
  78. physics

    A 20 g bullet is accelerated in a rifle barrel 45 cm long to a speed of 354 m/s. Use the work-energy theorem to find the average force exerted on the bullet while it is being accelerated. Answer in units of N.

    asked on November 18, 2015
  79. Physics

    A 7159 N piano is to be pushed up a(n) 2.26 m frictionless plank that makes an angle of 25.6 ◦ with the horizontal. Calculate the work done in sliding the piano up the plank at a slow constant rate. Answer in units of J.

    asked on November 18, 2015
  80. Math

    For the depth of water on Friday, 16 January 1998, the periodic function is: y = 1.05 sin 2pix/11.72 + 1.55 1.05 is the 'a' value 2pi/11.72 is the 'b' value 1.55 is the 'd' value we were told not to take into consideration the 'c' value in our equation 'y'

    asked on June 2, 2015
  81. Physics

    We have to work out the accepted value of a roller coaster cart (taking into account friction) when the mass is modified Here is the answer I got for 56.71 grams: 0=∆EGP+∆EK+Fd 0=mg(hf-hi )+1/2 m(v^2-u^2 )+Fd 0=0.05671 × 9.8 (0.075-0.786)+1/2×

    asked on June 2, 2015
  82. Chemistry

    What would have happened if Rutherford shot negative particles instead of positive particles in his gold-foil experiment? What would have happened if the nucleus in the gold-foil was actually negative, rather than positive, in his experiment?

    asked on June 1, 2015
  83. History

    Why was Ireland experiencing poverty in the late 1700's and early 1800's?

    asked on May 30, 2015
  84. Maths

    From looking at a periodic function, we had to decide on the equation for it. I got: y = 1.05 sin x2pi/11.72 + 1.55 1.05 is the 'a' value of the equation 2pi/11.72 is the 'b' value for the equation 1.55 is the 'd' value of the equation we were told not to

    asked on May 29, 2015
  85. History

    Why was Ireland experiencing poverty in the 1800's?

    asked on May 29, 2015
  86. Maths

    From looking at a periodic function, we had to decide on the equation for it. I got: y = 1.05 sin x2pi/11.72 + 1.55 1.05 is the 'a' value of the equation 2pi/11.72 is the 'b' value for the equation 1.55 is the 'd' value of the equation we were told not to

    asked on May 28, 2015
  87. math

    Find the periodic payment R required to amortize a loan of P dollars over t years with interest charged at the rate of r%/year compounded m times a year. (Round your answer to the nearest cent.) P = 30,000, r = 5, t = 20, m = 4

    asked on April 27, 2015
  88. Social Studies

    1. What dynasty ruled the Korean peninsula from AD 668 to AD 935? Meiji Qin Silla*** Tokugawa 2. What type of government ruled North korea after World War II communist**** democratic dictatorship oligarchy 3.Both Japan and the Koreas been influenced by

    asked on March 3, 2015
  89. Physics

    A plane is flying 250 m/s west with a crosswind of 25 m/s north affecting the flight. What is the magnitude and direction of the plane?

    asked on February 23, 2015
  90. Exponents

    Hi just curious when evalutating 5^-2 Would the answer be 25 Or would it be 0.4 = 2/5 I am lost

    asked on November 2, 2014
  91. Algebra

    If 4 notebooks weigh 2.8 pounds how do 6 notebooks weigh

    asked on September 2, 2014
  92. Math

    A ferris wheel has a diameter of 10 m and takes 24 sec to make one revolution. The lowest point on the wheel is 1 m above the ground. (4 marks) a. Sketch a graph to show how a rider's height above the ground varies with time as the ferris wheel makes a

    asked on July 23, 2014
  93. Math and Music

    I have to do a presentation on how math and music relate. I have found some things and facts but everything is so complicated. If someone could help explain to me how I can narrow my topic down and make a presentation that is simple but effective. It can

    asked on March 21, 2014
  94. Math palette of problems

    If 2/9 gallon of water fills a bucket 3/5 full, how many gallons of water are needed to fill the bucket?

    asked on January 30, 2014
  95. Physics

    A block is sliding along a frictionless surface at a speed of 3.6 m/s. It hits a spring of spring stiffness constant k = 150 N/m. How far has the spring compressed when the block comes to a stop?

    asked on September 13, 2013
  96. Physics

    Paige and Julia are playing volleyball. Paige is in spiking position when Julia gives her the perfect set. The 0.226-kg volleyball is 2.29 m above the ground and has a speed of 1.06 m/s. Paige spikes the ball, doing 9.89 J of work on it. Determine a) the

    asked on September 13, 2013
  97. math

    least to greatest 1/8,1/10,1/7

    asked on April 28, 2013
  98. Biology! pleaseee helppp

    About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the

    asked on November 10, 2012
  99. government

    Which of the following is NO LONGER necessary for the right to vote?A) RegistrationB) CitizenshipC) Residency D) Land Ownership

    asked on July 5, 2012
  100. communication

    I need to complete an outline and thesis statement on "Two female Chihuahuas living in the same household.I don't understand how and what information to write.

    asked on March 1, 2012


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