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  1. Algebra

    It took 4 hours for a biker to travel from one city to another going at a certain speed. On the return trip, the biker traveled at the same speed for the first 100-km and then for the rest of the trip he traveled at a speed which was 10 km/hour slower than

  2. Calculus Please Help

    Let f(x)=e^(2x)-kx, for k greater than 0. Using a calculator or computer, sketch the graph of f for k=1/9, 1/6,1/3,1/2,1,2,4. Describe what happens as k changes. f(x) has a local minimum. Find the location of the minimum. x= ____ Find the y-coordinate of

  3. ELA

    1.)What does it mean to organize evidence logically in a persuasive text? (1 point) to present it in a way that makes sense to put the least important piece of evidence first to include a counterargument to provide at least three pieces of evidence to

  4. physics

    A 140 g arrow is shot vertically from a bow whose effective spring constant is 500 N/m. If the bow is drawn 60 cm before shooting the arrow,to what height does the arrow rise?

  5. physics

    A ball of mass 100 g travelling with a velocity of 100 m/s collides with another ball of mass 400 g moving at 50 m/s in the same direction. If they stick together, calculate: (i) their common velocity (ii) loss of enery and hence state the type collision

  6. CHemistry...Please help

    Rank these liquids by their expected surface tension. Rank from greatest to least surface tension. 1.CH3CH2OCH3 2.CH3CH2CH2-OH 3.CH3CHOHCH2-OH 4.HO-CH2CHOHCH2-OH So as Dr. Bob mentioned to me before surface tension is how the surface molecules stick

  7. Using Credible sources quick check LA

    What is one criterion a writer should use when evaluating a source? answer- B When supporting a claim, what is a credible source? answer- A What does it mean for a source to be relevant? answer- B Why is it important to use credible sources when writing an

  8. Career guidance

    Which career can I peruse with Tourism maths literacy business studies geography English home langue and Afrikaans first additional

  9. Maths

    The height above ground level in metres of a missile launch vertically, is given by h(t)=-16t³+100t at what time is the missile 72m above?

  10. Math

    A voltage V across a resistance R generates a current I=V/R. If a constant voltage of 17 volts is put across a resistance that is increasing at a rate of 0.3 ohms per second when the resistance is 7 ohms, at what rate is the current changing? (Give units.)

  11. Algebra

    A squash patch currently has 120 lbs of butternut squash. For each additional day in the patch, the amount of butternut squash increases by 6 lbs. If the price of butternut squash is currently 80 cents per pound, but it decreases by 2 cents each day, how

  12. calculus

    1 pt) Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death and about 1 degree F for each additional hour. Assuming an air temperature of 68 degrees F and a living body temperature of

  13. Physics

    A 69.5kg football player is gliding across very smooth ice at 2.15m/s . He throws a 0.470kg football straight forward. A) What is the player's speed afterward if the ball is thrown at 16.0m/s relative to the ground? B) What is the player's speed afterward

  14. Geometry

    1. If ΔRST symbol ΔNPQ, then RT line is congruent to _____. (1 point) line NP line NQ line PQ line QP 2. Given RST NPQ, RT = 7x – 5, NQ = 5x + 11, find the length of RT and of NQ. (1 point) 8 51 40 56 3. Which of the following statements is true about

  15. Calculus I, differentiation

    The number, N, of people who have heard a rumor spread by mass media by time, t, is given by N(t)=a(1−e−kt). There are 6 million people in the population, who hear the rumor eventually. If 5% of them heard it on the first day, find the percentage of

  16. physics

    A block with mass m =7.3 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.21 m. While at this equilibrium position, the mass is then given an initial push downward at v = 4.5 m/s. The block oscillates on the

  17. Physics

    Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle. .63m in front of the rear wheels and 2.3m behind the front wheels. The mass of the truck and its contents is 9155 kg. Find the

  18. Physics

    A spring-loaded toy gun is used to shoot a ball of mass m=1.5 kg straight up in the air. The spring has spring constant k=667 N/m. If the spring is compressed a distance of 25.0 centimeters from its equilibrium position and then released, the ball reaches

  19. Math

    unit 6 lesson 10 Geometry A: Congruent Triangles Unit test

  20. genetic variation from meiosis quick check

    1. Why is is important for gametes to be haploid? - they fuse to form a diploid organism so there is a correct number or chromosomes. 2. The inheritance pattern of one gene will not affect the inheritance pattern of another gene. this is known as -

  21. Physical Science

    Here are the answers to the NEWTONS LAWS UNIT TEST 1.When you trip, your foot stops, but your body continues to move forward. Which statement best explains why this happens? Answer : An unbalanced force stops your foot but does not act on the rest of your

  22. English

    As the senior prefect of your school, you have been invited to tell the parent teacher association what your school need most.write your speech.

  23. Mitosis and Genetic Information Quick Check

    Questions: 1.Which stage of mitosis is characterized by microtubules pulling replicating chromosomes apart and separating them into sister chromatids? 2.Which phase of mitosis is characterized by each pair of sister chromatids moving to opposite sides of

  24. Mathematics

    Determine the equation of the member of the family of functions with zeros at 2 (order 2), 3 (order 2) and 4 (order 1) that passes through the point 1, 36. Show step-by-step calculations.

  25. MAT1033

    Why is it impossible to combine the expression radical 3x + 3^ radical 3x into a single term? Explain.

  26. science

    PLEASE HELP ME 1. Which statement best describes a polygenic trait?(1 point) -A polygenic trait is only controlled by one environmental factor. -A polygenic trait is only controlled by multiple environmental factors -A polygenic trait is only controlled by

  27. Mathematics.

    Using a ruler and a pair of compass only, construct triang ABC in which AB=10cm, BC=6cm and ABC=45, locate the point D inside the triangle ABC such that D is equidistant from AB and AC and 5cm from B construct a straight line through D to cut AB at X and

  28. Physics

    A car travelling due north at 60 km/hr increased its velocity to 80 m/s due south in 20 seconds draw speed against time graph

  29. mathematics

    A football is kicked at a velocity of 15m/s at an angle of25° to the horizontal.calculate

  30. ela

    What does it mean for a claim to be debatable?(1 point) It is based on facts that cannot be refuted. It can be supported with evidence. It is something people could have differing opinions about. It can be proven true or false. please help. this is for

  31. Kinetic and Thermal energy quick check answers

    1. What is kinetic energy? a) thermal energy b) the energy of motion c) the energy of radiation d) stored energy 2. A fisherman in a boat is drinking hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison

  32. Math

    You are dealt one card from a standard 52-card deck. Find the probability of being dealt a four.

  33. Chemistry

    The hydroperoxide ion, HO2–(aq), reacts with permanganate ion, MnO4–(aq) to produce MnO2(s) and oxygen gas. Balance the equation for the oxidation of hydroperoxide ion to O2(g) by permanganate ion in a basic solution.

  34. Maths

    In an examination,60 candidates passed science or maths.if 15 passed both subjects and 9 more passed maths than science, find the number of people who passed maths and science, probability that a candidate passed exactly one subject.

  35. Math

    A 10 acre field produced 750 bushels of corn. At that rate, how much corn can be produced from a 14 acre field. I need help on this can someone please try to help me. Thanks :)

  36. Social Studies

    The eventual election of Andrew Jackson Indicated which shift in US politics? 1. Increased reliance on aristocratic families 2. acceptance of the common man 3. Increased rights for native Americans 4. Acceptance of British influence

  37. Math

    Are the ratios 25/45 and 15/27 proportional?

  38. Spanish

    Which Spanish verb would you use to ask the following question? "What is your name?" A)estar B)ser C)hacer D)tener Is it D? I'm not sure, can someone pls help?

  39. American government

    Explain why a president might make an executive agreement rather than negotiate a formal treaty.

  40. Chemistry

    What is the maximum mass, in grams, of NH3 that can be produced by the reaction of 1.0 g of N2 and 1.0 g of H2 using the reaction below? N2+H2→NH3 (not balanced) A) 0.60 g B) 5.7 g C) 1.2 g D) 2.9 g

  41. Home economics

    List 10 careers in home economics

  42. Math

    1. Solve the system using elimination. 3x+3y=27 x-3y=-11 a. (8,1) b. (3,6) c. (6,3) d. (4,5)*** 2. Solve the system using elimination. 4x-7y=3 x-7y=-15 a. (-12/5,10/7) b. (-1,2) c. (6,3)*** d. (1,1/7) 3. Solve the system using elimination. 2x+3y=9 x+5y=8

  43. Spanish

    what is the most likely the reason that Spanish-speaking students in Costa Rica, Mexico, and Argentina all learn a second language in school? a. Spanish is a common language b. Spanish is not understood by many people c. it is important to be able to

  44. Algebra

    1.Identify the domain and range of the following relation. {(3,7),(3,8),(3,-2),(3,4),(3,1)} A.Domain:{3} Range:{-2,1,4,7,8}**** B.Domain:{-2,1,4,7,8} Range:{3} C.Domain:{all real numbers} Range:{all real numbers} D.Domain:O/ Range:O/ 2.Determain whether

  45. Pre-Algebra help!

    Tom buys $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work b. Who spent more on tax? I don't know what I'm suppose to do here. Am I suppose to multiply the

  46. Chemistry

    An electron is excited from the n=1 ground state to the n=3 state in a hydrogen atom. Which of the following statements are true? Correct the false statements to make them true. A. It takes more energy to ionize (completely remove) the electron from n=3

  47. geomerty

    how to find the distance between each pair of points (0,3)and (3,-5)

  48. algebra help!

    what is the domain of the function below? {(0,2)},(3,1),(5,2),(8,4)}? a. {1,2,4} b. {0,3,5,8} c. {0,1,2,3,4,5,8} d. {(0,2),(3,1),(5,2),(8,4)} ***** Is the following relation a function? {(0.3,0.6),(0.4,0.8),(0.3,0.7),(0.5,0.5)} a. yes b. no ***** c. cannot

  49. STATISTICS

    From a group of 12 people, you randomly select 3 of them. Find the probability that at least one of them is among the 3 oldest people in the group

  50. chemistry

    Complete the two reduction half reactions for the cell shown at the right, and show the line notation for the cell by dragging labels to the correct position. (The electrode on the left is the anode, and the one on the right is the cathode.) They give you

  51. Chemistry

    Classify each of the following as a redox reaction or a non-redox reaction. Zn+CuCl2 -> ZnCl2+Cu HCl+NaOH -> H2O+NaCl 2CO+O2 -> 2CO2 SO3+H2O -> H2SO4

  52. ALGERBRA,PLEASE HELP!!!!!!

    Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (1 point) A) (–2, 4) and (6, 6) B) (2, 4) and (6, 6) C)(–2, 4) and (6, –6) D)(2, –1) and (–3, 3) 2. Given a scale factor

  53. English

    Write a debate on the topic;Boys should not help in the kitchen.Speak for or against the motion.

  54. arithmetic progression

    given that the first term of an Ap is 7 and its 10th term is twice the second term calculate the 19th term.

  55. calculus

    Let f be a differentiable function such that f(3) = 2 and f'(3) = 5. If the tangent line to the graph of f at x = 3 is used to find an approximation to a zero of f, that approximation is? So confused

  56. calculus

    The function f is continuous on the closed interval [0,2] and has values that are given in the table below x = 0| 1 | 2 ____________ f(x) = 1| k | 2 The equation f(x) = 1/2 must have at least two solutions in the interval [0,2] if K = ? The answer is 0,

  57. physics

    A 16.0 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a 61.0° angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 840 N firefighter is 4.20 m from

  58. Calculus

    A voltage V across a resistance R generates a current I=VR. If a constant voltage of 4 volts is put across a resistance that is increasing at a rate of 0.3 ohms per second when the resistance is 4 ohms, at what rate is the current changing? (Give units.)

  59. Physics

    Overall 80 % of the energy used by the body must be eliminated as excess thermal energy and needs to be dissipated. The mechanisms of elimination are radiation, evaporation of sweat (2430 kJ/kg), evaporation from the lungs (38 kJ/h), conduction, and

  60. College Physics

    A fisherman notices that his boat is moving uo and down periodically, owing to waves on the surface of the water. It takes 2.5 s for the boat to travel from its highest point to its lowest, a total distance of 0.62 m. The fisherman sees that the wave

  61. physics (cross product vectors)

    Two vectors are lying in the xz plane: A=2.00i + 3.00k and B= -9.00i + 2.00k. a) What is the value of AxB? Check my solution: I found through calculations that the value is 23j. b) What is the magnitude |AxB|? I could do ABsin theta, but I have no angle

  62. urgent!!!words questions dued tomorrow

    Each phase is an anagram of a country and it's capital city. 1.CHEESE GARNET 2.OSSARIUM COWS 3.RARE NAUTICAL ARABS 4.SAVE UNITARIAN 5.ROYAL ITEM If don't know all still tell me what you know.HURRYHURRYHURRY... The first and last are in southern Europe,

  63. Chemistry

    Does electron transfer from Redox reactions easily be measured using electrochemical cells?

  64. Science

    1) a water balloon is thrown toward a target at 18 m/s. If the water balloon has a mass of 0.4 kg, what is its momentum? A) 7.2 kg • m/s B) 18.4 kg • m/s C) 45 kg • m/s D) 7.2 kg • m 2) what is the momentum of a car with a mass of 2,000 kg moving

  65. History

    Which of the following sparked the beginning of the Spanish-American War? A. The Cuba Libre movement*** B. The sinking of the U.S.S. Maine C. The Spanish relocation of Cuban rebels D. The Rough Riders' charge up San Juan Hill My Answer: ***

  66. Biology

    Can someone please check my answers? 1. Skin cells - become senescent quickly. have terminally differentiated. become quiescent quickly. continually replicate. *** 2. Which cell type undergoes terminal differentiation? stem cells heart cells*** epithelial

  67. Science

    Which option describes a situation in which reduction occurs?

  68. biology

    Mitosis in Complex Organisms Quick Check What happens during cytokinesis? The cytoplasm falls apart. The cytoplasm divides. The cytoplasm changes color. The cytoplasm becomes solid. Answer B- The cytoplasm divides. The process of differentiation is a

  69. language arts

    A student wants to teach a friend how to sew. Which type of medium should the student use? HALP

  70. Mathematics

    In a geometric progression the 3rd term is 4 times the 1st term and the sum of the 2nd term and the 4th term is 30. Find the positive common ratio, the first term, and sum of the first 7 terms

  71. english

    Which phrase gives the definition of a medium?(1 point) someone who communicates well with others a size of something a way to present information something not too hard or too easy

  72. Physics

    A meter rule balance horizontally on a knife edge at the 55cm Mark when a mass of 50g was hung at the 85cm mark. If the balanced point was found to be at the 20cm mark, find (i) the mass of the ruler (ii) find the distance of the balanced point,if the mass

  73. chemistry

    Methane (CH4) is a gas that is found in small quantities in Earth’s atmosphere. Which type of bonds does methane have, and why does one carbon atom bond with four hydrogen atoms? In three to five sentences, explain your answer in terms of valence

  74. Geometry (Due Today)

    Can someone please help me with this quiz? 1. Identify a pair of alternate exterior angles. A) angle 3 and angle 4 B) angle 1 and angle 2 C) angle 1 and angle 6 D) angle 2 and angle 6 2. This diagram of airport runway intersections shows two parallel

  75. Spanish

    1. Which of the following is sweet? -el pan tostado -el perro caliente -el jugo de manzanna -las papas fritas

  76. Physical Science 10A U4L5

    When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this observation? The iron atoms in iron oxide have more mass than pure iron. There are more iron atoms in iron oxide than in pure iron.

  77. science

    A model shows that the moon has grown to twice its size, yet it has remained in the same place. In one to two sentences, explain how this would impact the gravity between Earth and the moon.Use the scenario to answer the question. Scientists have

  78. geography

    i need answers to unit 2 lesson 10 language arts

  79. Life orientation

    Give four examples of inhumane farming methods

  80. social studies

    What is the purpose of primaries and caucuses? A. electing the president B. electing the members of Congress C. determining party delegate votes D. determining Electoral College votes

  81. I have answers!

    These are the answers for Lesson 8: Understanding Others Unit Review for language arts: D D B D A C A A C C B D D Hope this helps!

  82. Sciencee

    Geologists working for the Environmental Protection Agency monitor surface waters at sites across the country to determine the effects of acid rain on aquatic ecosystems. What type of information would the geologists most likely track? climate patterns

  83. Science

    On which object will earth gravity act with the greatest magnitude

  84. Language Arts

    Help! I need help on language arts, What's Out There? Unit Test Help quick!

  85. Mathematics

    Mathswatch Question: Kim drives 156 miles from Rotherham to London. She drives at an average speed of 60 miles per hour. She leaves Rotherham at 7:30 am. Does she drive in London before 10:00 am?

  86. physecs grade 10

    a football is kicked at a velocity of 15m/s at an angel of 25 to the horizontal. calculate a)the total fligh time b)the maximum height c)the range of ball

  87. Chemistry

    How Would 250ml Of 0.15M kno3 solution be preared

  88. ss

    Which statement explains why ocean currents can affect global climates?

  89. Language Arts

    1. Which of the following best describes text evidence?(1 point) A. ideas or conclusions about details that are hinted at but not stated B. information or details from a text that support an idea or analysis*** C. data on the amount of time it takes to

  90. math

    In which situation are unbalanced forces acting on an object? (1 point) Two people stand on the same side of a large tire. Both people pull the tire with equal force. Two people stand on the same side of a large tire. One person pushes the tire and the

  91. ELA

    Effective Organization Quick Check B A D B

  92. Language Arts

    1. What is the definition of a claim? A. the audience’s point of view on a topic B. the feeling the author gets about a topic C. the author’s opinion or point of view D. the evidence from personal experience

  93. ELA unit 8 lesson 7

    Use the sentence to answer the question. "AJ is writing a paragraph with the following claim: Soccer is the most popular sport in the world." Which sentence best supports AJ's claim? and i need to check the rest of my answers so if you could put them on

  94. language

    What is the purpose of writing an argument?

  95. ELA

    Using Sources Quick Check help The scope of a project refers to(1 point) how you write your research question. the size of the research project. the answer to your research question. an effective source for the project. When would it be a good idea to

  96. ELA

    What is evidence?(1 point) specific information that supports an idea reasons to support a claim a statement put forth in support of an argument*** an opinion formed based on facts What is the purpose of reasons in a persuasive essay? (1 point) They are

  97. english

    1. Choose the BEST description of magical realism. a. it describes a futuristic world of magic b. it incorporates technology into our everyday reality. c. it incorporates elements of the supernatural into everyday reality***

  98. English

    What does it mean to delineate an argument? to form an opinion on it to support it with facts to break it down to restate it in a different way What is an opposing claim in an informational text? an argument that is counter to the claims an author makes a

  99. Science

    The transfer of heat by direct contact is called____? A. Radiation B.Vibrating Molecules C.Conduction D. Kinetic Energy I need the answer to all the questions for this science quick check

  100. Stoichiometry

    4. Vitamin C, M= 176.12 g/mol, is a compound of composed of carbon, hydrogen, and oxygen. Vitamin C is found in many natural sources especially citrus fruits. When a 1.000-g sample of vitamin C is burned in a combustion apparatus 1.50 g of CO2 and 0.410 g