Questions Asked on
December 6, 2016

  1. Science

    Two birds collide in midair. Before the collision, their combined momentum was 88 kg•m/s to the west. What is their combined momentum after the collision? A. 88 kg•m/s east B. 88 g•m/s north C. 88 kg•m/s down D. 88 kg•m/s west

  2. G.p.

    The second term of a g.p. Is 27 and 7th term is 1/9. Find the first term and the common ratio.

  3. Math

    Determine the slope of the line through the given points. If the slope is undefined, so state. (1,5) and (4,13)

  4. Calculus

    Use a graphing utility to graph the polar equation shown below. r = cos 5Θ + n cos Θ, 0 ≤ Θ ≤ π For the integers n = -5 to n = 5. As you graph these equations, you should see the graph change shape from a heart to a bell. I'm sorry. I'm having

  5. Algebra

    In 2000, 520,000 acres of farmland in a region were devoted to growing nuts. By 2013​, the number of acres used to grow nuts had increased to 810,000. Find the average rate of change in the number of acres in a region used to grow nuts from 2000 to 2013.

  6. College Math

    Four balls are selected at random without replacement from an urn containing four white balls and five blue balls. Find the probability of the given event. ​ All of the balls are blue.

  7. Calc

    If y=tanu, u=v-(1/v), and v=lnx. What is the value of dy/dx at x=e?

  8. Chemistry

    Suppose you titrated a sample of sulfuric acid (diprotic acid) with a 0.250 M solution of NaOH. Given the data in the table below, what is the concentration of the sulfuric acid solution?

  9. Nature Science

    If a typhoon hits an island without any person, is that a disaster?

  10. social studies

    how were the lives of white people in the north and south alike and different

  11. Educational technology and online learning

    Which of the following sets is data would be represented best in a bar graph? A. the number of hot dogs consumed by the people entered in a hot dog eating contests B. The percentage of hot dogs consumed my women? C.the number of hot dogs consumed by the

  12. physics

    What is the time constant of a 10 H inductor and a 200 ohm resistor connected in series? Is my work correct? I did: T= L/R = 10 H divided by 200 ohm = 0.05 seconds = 50 milliseconds mS. Is that correct?

  13. Algebra 2

    Times for an ambulance to respond to a medical emergency in a certain town are normally distributed with a mean of 450 seconds and a standard deviation of 50 seconds. Suppose there are 160 emergencies in that town. In about how many emergencies are the

  14. math

    21. Ted Williams made deposits of $500 at the end of each year for eight years. The rate is 8% compounded annually. Using the tables in the Business Math Handbook that accompanies the course textbook, calculate the value of Ted's annuity at the end of

  15. Describing Data

    The following frequency table contains the total number of deaths worldwide as a result of earthquakes from 2000 to 2012. Year Deaths 2000 231 2001 21,357 2002 11,685 2003 33,819 2004 228,802 2005 88,003 2006 6,605 2007 712 2008 88,011 2009 1,790 2010

  16. geography

    90 degrees west longitude runs near blank and blank

  17. Probability Help

    In ''The Numbers Game,'' a state lottery, four numbers are drawn with replacement from an urn containing the digits 0-9, inclusive. Find the probability of a ticket holder having the indicated winning ticket. ​ All four digits in any order(including the

  18. Language Arts

    13. Read the following sentence from “The Balek Scales.” Everything my grandfather took to the Baleks he entered on the back of a torn-off calendar page: every pound of mushrooms, every gram of thyme, and on the right-hand side, in his childish

  19. Trigonometry

    A Ferris Wheel rotates 3 times each minute. The passengers sit in seats that are 25 feet from the center of the wheel. A. What is the angular velocity of the wheel in degrees per minute and radians per minute? B. What is the linear velocity of the

  20. math

    A map has a scale of 1 inch=35 miles. What is the actual distance if the distance on the map is 3.5 inches?

  21. The Simplex Method

    Consider the linear programming problem Maximize P=60x+50y. x+y≤80 5x+10y≤560 50x+20y≤1600 x≥0 y≥0

  22. history

    1.What event led to the U.S. purchase of the Louisiana Territory? A)The burning of a U.S. Navy ship in the First Barbary War B)The U.S. Supreme Court's decision in Marbury vs. Madison C)The successful Haitian slave revolt **D)Napoleon losing money in his

  23. Algebra

    A projectile is thrown upward so that its distance above the ground after t seconds is h(t)=-16t^2 + 570t. After how many seconds does it reach its maximum​ height?

  24. Langugae Arts

    11. Read the following sentence from “The Balek Scales.” My grandfather was the first person bold enough to test the justice of the Baleks, the family who lived in the chateau and drove two carriages, who always maintained one boy from the village

  25. Math

    Solve for t 1/A = 1/m + 1/t

  26. Probability Help

    Forty people are selected at random. What is the probability that none of the people in this group have the same birthday? ​

  27. math

    A machine packages bags of almonds. The weights of the bags are normally distributed with a mean of 14 oz and a standard deviation of 1.2 oz. Enter the z-score of a bag of almonds that weighs 12.2 oz. my answer: -1.5

  28. Math

    Movie starts at 5:20 it is a 1 hour and 50 minutes long. What time does the movie end?

  29. Trigonometry

    Write an equation of sin with amplitude = 2, period = 2pi, and vertical shift = 5

  30. harmonic progression

    find the sequence whose n th term is 1/3n-2. is this sequence an H.P.?

  31. American Government

    3. Which of the following statements about the president's judicial powers are true? Select all that apply. A- The president's amnesty power pardons those who have violated the law. B- The president's can pardon himself from impeachment C- The president's

  32. Algebra

    Write an equation for a function that has a graph with the given characteristics. The shape of y=^3 squareroot x is shifted 7.3 units to the left. This graph is then vertically stretched by a factor of 9. ​Finally, the graph is reflected across the

  33. Language Arts

    18. Identify the term that correctly identifies the sentence. After all, I have always been a night owl, and I prefer moonlight to sunlight. A. Simple Sentence. B. Compound Sentence. C. Complex Sentence. D. Compound-Complex Sentence.*** 19. Identify the

  34. Algebra

    Find approximate solutions rounded to three decimal places for ​f(x)=x^2-5x+3

  35. LA Help!

    Both Ernesto from barrio boy and the boy in "A Day's Wait" interact with adults. Ernesto interacts with Miss Ryan, while the sick boy interacts with his father. Compare and contrast how the boys interact with the adults. Focus on how the boys think of the

  36. Algebra 2

    For each function, identify the horizontal translation of the parent function, f(x)=x^2. Then graph the function. 19. y=(x-4)^2 I need to figure out how to solve this problem, so steps would be appreciative! PLEASE don't leave websites for me to check out,

  37. physics

    A wooden box, with a mass of 22 kg, is pulled at a constant speed with a rope that makes an angle of 25° with the wooden floor. What is the tension in the rope?

  38. calculus

    a farmer wants to create pens along side his barn for his chicken ducks and geese. he has 600 ft of fencing and wants to create 2 equal spaces for each species. what is the largest area he could have? Also one side is along a house so no fencing is needed

  39. Algebra 1

    Suppose y varies directly with x, and y=25 when x=-140. What is the value of y when x=36 A)140 B)165 C)201.6***** D)176

  40. Calculus

    If u,v, and w are nonzero differentiable functions, then the derivative of uv/w is what?

  41. g.p.

    The ratio of the fourth and 12th term of a g.p. With positive common ratio is 1:256. If the difference of two terms be 61.2, find the sum of 8 terms of this series.

  42. Probability Help

    Forty people are selected at random. What is the probability that none of the people in this group have the same birthday? ​

  43. math

    You have $270 in your bank account. You plan to save $80 from your paycheck each week. Which graph shows your bank account balance at the end of each week?

  44. Math

    Y varies partly as x, partly inversely as x and partly constant. The graph of y against x passes through the points (2,20), (3,16), and (5,14). Find a general formula for y in terms of x My proposed formula is y = x / kx

  45. Maths

    A deep-sea diver is 4.5 m below the water level. At what depth is he now? At what height is he now?

  46. Math

    When Carla looked out at the school parking lot, she noticed that for every 2 minivans, there were 5 other types of vehicles. If there are 39 vehicles in the parking lot, how many of them are not minivans? I am confused on how to solve this problem. I need

  47. Math liberal arts 2

    Evaluate the function for the given value of x. f (x)=x+16, x=3

  48. Math

    Write the pair of fractions as a pair of fractions with a common denominator 3/10 and 1/2

  49. Language Arts (ASAP)

    3. In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals

  50. Physics

    A bungee jumper runs off a platform and falls 40m before his bungee cord begins to stretch. Once the bungee cord begins to stretch his velocity slows by 20 m/s in 12m. If the mass of the bungee jumper is 55kg, what is the average force the bungee applies

  51. Chemistry

    Calculate the total pressure above 1.0L solution of a 1.42M CH3OH(aq) solution at 25 degrees(C). The vapor pressure of pure methanol at 25 degrees (C) is 127.1 torr and the vapor pressure of the pure water is 23.8 torr at 25 degrees(C. You may assume that

  52. Spanish 2 Present Subjunctive

    Please check my answers. I know I'm missing accents. 1. Os recomienda que ___ otra llave de recepcion. a) pedis b) pidais*** c) piden d) pida 2. Which of the following sentences is correct? a) Es importante tu estudies mucho. b) Es necesario que hacer

  53. K12

    Is anyone in K12 here or FLCCA that could help me in Algebra 2???

  54. math

    For an 18 month period, the last term is and the series sum is . For a 24 month period, the last term is and the series sum is . For a 30 month period, the last term is and the series sum is .

  55. ELA

    what text features do the author of "Art, Architecture, and Learning in Egypt" use to help readers better understand pyramids. Describe how this text features provide additional information about pyramids that is not in the main text. I am having trouble

  56. science

    an object of size 3cm is placed at a distance of 15cm from a convex lens of focal length 10cm calculate the distance and size of image so formed what will be nature of image?

  57. physics

    the speed of sound in air at 0°C is 330m/s. at what temperature will the velocity of sound become 366m/s ?

  58. Language Arts

    23. Respond in a paragraph. Answer is written in complete sentences. Compare the poems by Szymborska and Milosz read over the course of this unit. All are important twentieth century writers addressing a similar theme: death. Which poet addresses it in

  59. physics

    A Syringe is filled with a solution of viscosity n=1.75x10^-3 pa s. The plunger of syringe has cross sectional area 9 x 10^-5 m^2. The needle has length 30mm and internal radius 3 x 10^-4 m. Intravenous pressure in patient is 2.0 kPa. What force must be

  60. Chemistry

    7.0 mL of 0.64 M HBr reacts with 38 mL of 0.39 M KOH. 1) What are the moles of acid before the reaction? 2) What are the moles of base before the reaction? 3) What is the limiting reagent? 4) How many moles of excess reagent are there after the reaction?

  61. Science

    The ratio of mass of hydrogen to mass of oxygen in water is 1:4. How much oxygen will there be in 80g of water

  62. math

    In a load of 3/4 tons of steel roda.1/8 of them are bent. How many steel rods are bent?

  63. history

    U.S. Groups of the Late 1700s and Early 1800s Women Children Indentured Servants Native Americans African American Working Class Which is one characteristic common to all groups listed above? They rarely attained landownership. They could all be legally

  64. Math

    Simplify each expression. All variables represent positive numbers. Sqrt of 75p^3q^2 divide by sqrt of p^5q^4 My answer: 5q sqrt of 3 / p^2q^2 Is this right?

  65. Algebra

    Find a rational function that satisfies the given conditions. Vertical asymptotes x=-2,x=7 Horizontal asymptote y=7/2 ​x-intercept ​(−5​, ​0)

  66. Language Arts

    (Use the passage to answer the question.) 8. Read lines 5 – 9 from “The Olympic Swimmer.” Swimmers swivel, splash, and kick Back and forth in a clear, blue pool; Like fish at play in Neptune’s sea. Swimming relaxed, and calm, and free. These stars,

  67. Math

    One of the two equal angles of an isosceles.triangle is greatest than the third angle 18° . Find the three angles of the isosceles triangle

  68. Language Arts

    15. Read the following lines from the story “Forbidden Fruit.” Of course, in childhood there were occasions when I could have tasted pork in kindergarten or ate at the home of a friend, but I never broke the commandment. When we had rice and pork in

  69. Algebra

    Suppose that a polynomial function of degree 5 with rational coefficients has​ 6, −2+4i, 4−sqrt2 as zeros. Find the other zeros. Thank you!

  70. Algebra

    Find the first 4 terms of the recursively defined sequence. a subscript 1 =9​, a subscript 2 =9​, a Subscript n+1=a Subscript n +a Subscript n-1 Are the first four terms A)9,9,18,18 B)9,9,9,27 C)9,9,81,729 D)9,9,18,27

  71. Algebra 2

    Select Yes or No to state whether each data set is likely to be normally distributed. the numbers on the jerseys of the players in a basketball league my answer:yes the heights of the players in a basketball league my answer:yes the lengths of the

  72. Science

    1) What physical features do producers and consumers have to help them survive in their environment

  73. Physics

    A 100 watts light bulb has an average life of 2000 hours. How much energy does it consume over its lifetime? The only thing I got was power=100 watts and time = 2000 hours but I need to convert to seconds and I don't kn how to do that.

  74. Pre-Calculus

    Can someone please explain how eccentricity can be used to classify conics.

  75. English

    In the State of Union Address the President promised to improve the faltering economy, to increase the amount of federal funding available for the art programs and ?

  76. English

    1. We went on a picnic at Riverside Park. 2. We went on a picnic at the Riverside Park. (Do you put 'the' before 'Riverside Park'?) 3. The lesson being over, we ran out of the room. 4. Because the lesson was over, we ran out of the room. 5. After the

  77. Spanish

    What is the Spanish expression for the activity shown in this image? [person kicking soccerball] jugar del fútbol jugar al fútbol jugar por fútbol jugar a la fútbol

  78. Math liberal arts 2

    The equation y=mx+b, the slope of the line is represented by? Is the slope m?

  79. Spanish

    Which statement is accurate? A. Fútbol is more important that béisbol in all Spanish­speaking countries. B. Béisbol is more important than fútbol in México. C. Béisbol is more important than fútbol in Cuba, Puerto Rico, and la República

  80. art

    My internet is down for my computer and I can only use data. I can't go back for my notes 1. This drawing was made using what natural resource? (1 point) A. harvesting the clay from a corn plant B. making the clay from water and pigments C. making the clay

  81. CALC

    Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = x&2yi + xy^2j + 2xyzk, S is the surface of the tetrahedron bounded by the planes x = 0, y = 0, z = 0, and x + 3y + z = 3.

  82. CALC

    Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = x^4i − x^3z^2j + 4xy^2zk, S is the surface of the solid bounded by the cylinder x^2 + y^2 = 4 and the planes z = x + 6 and z =

  83. Math liberal arts 2

    A unitless measure that describes the strength of the linear relationship between two variables is called the linear correlation a.number b.value c.variable d. Coefficient?

  84. Literacy

    Write a paragraph using all of these words Persistent Recommend Maintain Continue Submit Similar Cancel Status Instead Massive

  85. math

    c. What do the slope and y-intercept mean in the context of this problem? Hint: What do you pay when you step into the cab?

  86. Language arts

    What is The propositional phrase of this sentence.The ticket holders waited patiently (outside the movie theater).

  87. Chemistry (identifying equations)

    What type of reactions are these? Acid-base? Oxidation/Reduction? Precipitation? 1) Zn (s) + 2 HCl (aq) -> ZnCl2 (aq) + H2 (g) 2) Fe (s) + CuSO4 (aq) -> FeSO4 (aq) + Cu (s) 3) Fe (s) + Cu(NO)2 (aq) -> Fe(NO3)2 (aq) + Cu(s)

  88. Chemistry

    What is the vapor pressure of a solution prepares by dissolving 4.25g of K2O in enough water to preapare 1.25L of Solution at 25 degrees (C)? Assume that the density of the solution is 1.00 g/mL and that the vapor pressure of pure water is 23.8 torr at 25

  89. Social Studies

    A popular cell phone manufacture begins sellings a new phone with many unique =features. Lots of people want to buy the new phone. The old phone cost $149.00. What is the most likely price of the new phone?

  90. Math

    Give an example of a function from everyday life.(fill in blanks):______ depends on_____, so _____is a function of _______.

  91. Algebra

    How many liters of a 25% antifreeze solution must be mixed with 4liters of a 60%antifreeze solution to make a mixture that is 45%antifreeze? I'm not sure of the correct formula to use.

  92. Biology

    All of the cells are in the very early stages of embryonic development and have not begun to differentiate into specialized types of cells. What type of cells would these be?

  93. english

    Can someone help me write a 8 line poem about Romeo and Juliet

  94. English

    1. The teams drew/tied the match five all. 2. The teams drew/tied the match five points each. 3. The teams drew/tied the match at five all. 4. The teams drew/tied the match at five points each. 5. The teams drew/tied the match at 5-5. 6. The teams

  95. Algebra

    Four times the sum of 9 and some number is 60. What is the number?

  96. Physics

    Your 2000 kg car is going 40 m/s on the highway when you see a police car up ahead. You apply the maximum 10000 N of brake force to slow your car down to the speed limit of 30 m/s. How many seconds will it take you to get down to the speed limit?

  97. algebra

    Solve each system of eaquations by graphing or using a table. 5x-y=12 3x+2y=12

  98. Math

    Let f(x)= -3x+4 and g(x)= -x^2 +4x+1. Find and simplify f(-3)

  99. Applied calculus

    By using appropriate software/programming, sketch the following vector functions: 1) 2cos(2t)i + 2sin(3t)j for t within o to 2pai 2) 16sin^3ti + (13cost - 5cos2t - 2cos3t - cos4t)j for t within 0 to 2pai

  100. science double check answers

    1.Asteroids in our solar system are a)planets b)comet remains c)found in an asteroid belt** d)pieces of ice 2.Which of the following would not be found on the electromagnetic spectrum? A)The wavelengths of electromagnetic radiation B)The frequency of

  101. Chemistry

    Calculate the new concentration of NaOH if 35 mL of 2.0M NaOH is added to 45 mL of water. If I don't use C1V1=C2V2, then how do I solve it? I'm confuused.

  102. Math

    Hello I need to ask a question. This is all new to me as we are just learning this in school. How would I write an inequality with -197 and -110? I have never done this before. Can you please help me?

  103. CAL 3

    Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = 3xy2i + xezj + z3k, S is the surface of the solid bounded by the cylinder y2 + z2 = 1 and the planes

  104. math

    i need ratios of 5/6

  105. Morning work

    What prounoun will replace the underlined noun Sheila's picture

  106. Geometry

    Quadrilateral EFGH is a rectangle. If EM equals 5X plus one and HF equals 42 find the value of X Quadrilateral ABCD is a rectangle. Find the value of "x" if m/_DAC=(4x+8)degrees and m/_ CAB=(5x-8) degrees

  107. LIT

    two numbers sum to 37 twice the first subtracted from the second is 4 find the numbers

  108. biology

    All of the cells are in the very early stages of embryonic development and have not begun to differentiate into specialized types of cells. What type of cells would these be? A) gametes B) stem cells C) somatic cells D) epidermal cells

  109. maths

    Find all possible pairs of two natural numbers whose sum is 77 and their g.c.d. is 7

  110. Math

    Simplify each expression. Sqrt of 128m^3n^5/sqrt of 81mn^7



  112. Chem

    How would the pressure of a gas change if suddenly the intermolecular forces were repulsive rather than attractive?

  113. Math

    sqrt of 12r^7s^7 divide by sqrt of r^5s^2

  114. Fraction Test Question

    Here is a question I had on a test. 4x8 = 8x4 (8x4)=32 32x4= What could be another outcome of this answer? Answer choices had fractions in them.

  115. Maths

    A survey conducted with 30 students revealed that:20 has cell phone 16 has tsblets 4 has neither 2x has both...calculate the value of x

  116. Physics!!!!!!

    A 0.18 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of −360 N. a) How long does it take this force to stop the ball? b) How far does the ball travel before stop- ping?

  117. No subject

    I weighed in at 96.3 but wonder what I weigh in pounds

  118. history

    need answers fast!!!!!!What impact did norbert Rilliexus invention have on sugar industries?

  119. geometry

    a rhombus is equilateral

  120. maths

    Find all possible pairs of two natural numbers whose sum is 77 and their g.c.d. is 7

  121. biology

    1) Gene regulation in eukaryotes a) usually involves in operons b) is simpler than in prokaryotes c) allows for cell specialization d) includes the action of an operator region i think its C can you please explain to me why it is c or why it isnt if i got

  122. Calculus

    If f'(x)=-f(x) and f(1)=1, then f(x) = e^1-x Is this correct?

  123. spanish

    what can scientist learn from studying the forest around the crater in the Poas Volcano?

  124. Spanish 2

    So I know that GUSTAR is an irregular preterit, but what is the chart that goes with it? Please and thank you.

  125. Chem

    The accepted value for the enthalpy for the following reaction reaction is 466.85 kJ/mol. Mg + 2Hcl = MgCl2 + H2 Calculate the heat that would be generated if 5.00g of magnesium reacts with excess hydrochloric acid. I don't even know how to start this

  126. Calculus

    If f(x)=(x^2+1)^(2-3x), then f'(1) = -3/2ln(2)-1/2 Is this correct?

  127. Math

    Let f(x)= -3x+4 and g(x)= -x^2 +4x+1. Find and simplify g(k)

  128. Chemistry

    The volume of a sample of a gas collected over water at 32 Celsius and 752 torr is 627 ml. What will the volume of the gas be when dried and measured at STP? (Vapor pressure of water at 32 Celsius = 35.7 torr)

  129. math

    Tommy walked 3 2/7 miles. write the distance Tommy walked as an improper fraction. A.4 B.4/3

  130. Math

    During a class election 12 people voted for candidate A.If there were 42 votes total,what is the ratio of votes for candidate B compared to candidate A?

  131. trigonometry

    Write an equation of secant with period = pi, phase shift = -pi/2, and vertical shift = 3

  132. math

    Find three even consecutive integers such that the sum of the first two exceeds the third by 16.

  133. Trigonometry

    Write an equation of cotangent with period = 3pi, phase shift = -pi, and vertical shift = -1

  134. G.p.

    The sum of n terms of a series is a.2^2-b, find its n th term. Are the terms of this series in g.p.?

  135. Trigonometry

    Determine the angular velocity if 2.5 revolutions are completed in 10 seconds. Round to the nearest tenth.

  136. Math

    A 4x4 grid with 5 blocks shaded in, I need to write a percent and a ratio for it. A. 1/5, 25% B. 5/16, 31.2% C. 1/4 , 20% D. 1/4, 25% C? Im not really sure on this one, I just need some help.

  137. Chemistry-Help Please

    Help please. Am doing a past exam paper and I hit a road block with this question: Chloride in a brine solution is determined by a precipitation titration. A 10.00 mL aliquot of the solution is titrated with 15.00mL of standard 0.1182 M AgNO3 solution. The

  138. Math

    FIND THE LIMIT!!! lim x--->3 sqrt(2x+3)- sqrt (3x)/(x^2-3x) I keep getting zero is this right?

  139. maths

    The denominator of rational number is GreaTer than it numerator by 7.if 3subtracted to numerator and 2added to denominator the newnumber become 1/5 find the origina number .

  140. math

    Juan has three rain sticks measuring 8 inches, 6 inches, and 12 inches each. what is the least common multiple of 8, 6, and 12? A.12 B.24*** C.48 D.96 is it B?

  141. Algebra

    An object is dropped from a height of 1000 cm above the ground after t seconds is given by the formula below- d = 10tsquare + 1000 How far above the ground is the object, when it has fallen for 6 seconds? Please show your work.

  142. chemistry

    how does H-bonding affect freezing point depression? I did a lab and calculated my exp molecular weight for benzoic acid and i got a value that is double the known value. My prof said it is due to H-bonding...i don't understand what effect it has on the

  143. Chemistry

    Okay so my lecturer has this in our slides and there are no notes just a heading saying speaciation, I have tried google and everything I have read does not include pH in their question. Please help me Calculate the equilibrium concentrations of the

  144. Math

    I have no clue how to do this problem: lim---->2 then thees this little dash slightly above the 2 and then its |x-2|/(x-2)

  145. Chemistry Help

    You are required to make 500 mL of a buffer solution with pH = 5.0 and a total acetate concentration of 0.1000 M. You are supplied with solid sodium actetate (CH3COONa) and 2.00 M hydrochloric acid. What mass of sodium acetate and what volume of

  146. Mathematics

    At a local track meet, RCMS won 3 blue ribbons than red ribbons. They also won 7 more yellow ribbons than red ribbons. RCMS won a total of 28 ribbons. How many of each color did RCMS win?

  147. English

    1.In Social Studies, i learned about the famous Architect Frank Lloyd Wright. 2. One of wright's best-known works is his house, fallingwater, in bear run, Pennsylvania. 3."Yes, wright still may be the best-known american architect," Mrs. Lee said. 4. Louis

  148. Meth

    -2 - 7 = -23 A.15 B.5 C.-8 D.-15

  149. Probability

    A customer at Cavallaro's Fruit Stand picks a sample of 4 oranges at random from a crate containing 50 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges?

  150. maths

    A fraction a / b can be expressed as a terminating decimal if b has no prime factors other than A) 2, 3 B) 3, 5 C) 2,5 D) 2,3,5 Please choose from the option and please show your work.

  151. American Government

    1) How is the Supreme Court equal to the other branches of government? A) It has the same powers as the legislative branch and executive branch** B) It enforces the laws along with the president C) It creates laws like the legislative branch D) It

  152. science

    A 33.1 kg crate rests on a horizontal floor, and a 69.0 kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.

  153. Chemistry

    What is the ionic compound of SrMnO4


    Using archimedes principle find the depth submerged of a log in water. Diameter 2.3cm radius 1.15cm, mass 37g, length of log 10cm, density of water 1000kg/m^3. Myself I can get to the submereged volume using Fb=Pvg but I don't know an equation for the

  155. Math

    How can I use bar diagrams to divide unit fractions by whole numbers?

  156. Algebra II

    PLEASE HELPPPPPP What are the possible numbers of positive, negative, and complex zeros of f(x) = x4 + 3x3 − 2x2 + 1? (6 points) Positive: 2 or 0; negative: 2 or 0; complex: 4, 2, or 0 Positive: 2, or 0; negative: 4, 2 or 0; complex: 4, 2, or 0 Positive:

  157. English

    1. Canada drew/tied the game against England at 1-1. 2. Canada drew/tied the game against England 1-1. 3. Canada drew/tied the game against England at one to one. 4. Canada drew/tied the game against England one to one. -------------------------- Q1: Can

  158. English

    1. Canand lost the game against/with England at 2 to 3. 2. Canada won the game against/with England at two to three. 3. Canada won the game against/with England at 2-2. ----------------- Are they correct? Would you let me know correct expressions?

  159. Math

    The product of my numerator and my denominator is divisible by 2 .my denominator and my numerator differ by 3. My numerator is an even number .my denominator is a prime number.I am:______

  160. physics

    An electron beam is accelerated through 50kv potential difference and then passes through magnetic field produced by coils for 1cm the screen is located 10 cm from end is 50 cm wide.when the field is turned off the beam stikes the centre of screen.what

  161. Math

    Fill in the blanks. 56 ÷ 7 = ____ ones ÷ 7 = ____ ones = ____

  162. Maths

    Find the lenght of diagonal of a rectangle whose sides are 16 cm and 12 cm

  163. Maths

    The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

  164. Calculus

    What would the smallest positive integer be for n if: y=sinx and y^(n) means the nth derivative of y with respect to x.

  165. U.S History

    What did the Alien and Sedition Acts represent? A)Thomas Jefferson's concern with national defense B)James Madison's concern with personal freedom C)The importance of immigration to the Democratic-Republicans*** D)The importance of national security to the

  166. Math

    Compare partial products and regrouping. Describe how the methods are alike and different

  167. Math


  168. Calc

    The tangent line to the graph of y=f(x) at both x=3 and x=4 is y=-x+5. Which of the following statements must be true? The function f(x) is the line y=-x+5 f(3)=f(4) f'(3)=f'(4) f(x) is not differentiable at x=3 and x=4 None of the above

  169. Math

    Hi I need a little help with a couple math questions I believe I have the answers, if someone can please just check them thank you. 1. The table shows the number of miles driven over time. Time 4|6|8|10 Miles 204|306|408|510 Express the relationship

  170. Calculus

    Find the open intervals on which f(x) = -6x^2 + 96x + 7 is increasing or decreasing. a. increasing on (-inf, 16); decreasing on (16, inf). b. increasing on (-inf, 14); decreasing on (14, inf). c. increasing on (-inf, 84); decreasing on (84, inf). d.

  171. Calc

    If f(x)=6x^3-4x then d/dx(f(lnx)) would be what equation?

  172. English (essay question)

    Hi, so I'm writing an expository essay and one of the requirements asks for the following: "Claim, example, warrant format in each body paragraph." What exactly does this mean? I understand I have to give examples, but does "claim" and "warrant" mean that

  173. Calc

    If x=t^3-t and y=√(3t+1), then dy/dx at t=1 is what?

  174. history

    4. What does the author mean in saying that popular sovereignty "undermined the Missouri compromise”? It maintained the division of free and slave states. It expanded slavery to the Northern free states. It forced slaves who had escaped to be returned to

  175. Math

    An electronics company has 450 employees. The company plans to increase its staff by 30%. How many new employees will the company hire?

  176. math

    The Curved surface area of the cylinder is 1760cm^2 .and its volume is 12320 cm^3. Find its height

  177. physics

    if copper rod has a length of 2m at 30 °C. what is its length at 70 °C ?

  178. math

    In a load of 3/4 tons of steel roda.1/8 of them are bent. How many steel rods are bent?

  179. physics

    The self induced e.m.f created in a coil has the value of 24mV at the instant when the current is 4A and varies at the rate of 10A/s. What is the value of the self magnetic flux kn the coil at this instant?

  180. Cal 3

    Find critical points for f(x,y)= x^3+y^3-15x^2-6xy+18y^2+39x+138y I know you first take the partial derivative of x and y, but I am not sure where to go from there.

  181. Math

    The adjacent side of a parallelogram are 15cm and 8cm. It the distance between the longer sides is 4cm, find the distance between the shorter sides

  182. math

    the nth team of a progression is the pattern of number, so formed ,in A.P.?if so, find its 6th term

  183. LA

    he boy got bed Byron was up in his top bunk and Kenny was down in the bottom Kenny was so exited that he was talking a mile a minute although he realized that he was probably just talking to himself. Byron was still upset about the trip so he refused to

  184. Algebra

    Write a​ slope-intercept equation for a line passing through the point (4,−2) that is parallel to the line 4x+7y=8. Then write a second equation for a line passing through the point (4,−2) that is perpendicular to the line 4x+7y=8. Thank you!

  185. physics

    In the circuit we have E=48V, R=6 ohm and L=4H. We close the switch at the instant t=0, the current I in the circuit grows from zero to its maximum value Io, and the permanent phase is established. A) determine the value of Io. B) calculate the values of

  186. Math

    Under ideal​ conditions, a population of rabbits has an exponential growth rate of 11.8​% per day. Consider an initial population of 300 rabbits. Find the exponential growth function.

  187. English

    1. The street is closed for construction. 2. The city has closed the street for construction. 3. They have closed the street for construction. (What is the suitable active voice of #1?) 4. The door was shut. 5. He had shut the door. 6. They had shut the

  188. chemistry

    In a calorimetry experiment, 2.14 g of NH4Cl is dissolved in 100.0 mL of water. The temperature drops by 1.43°C. Calculate the molar heat of solution for NH4Cl.

  189. math

    simplify the expression -4 - 5(w + 8) A. -5w - 44 B. -5w + 36******* C. -w - 8 D. -20w + 8

  190. Math

    Convert to an exponential equation. log Subscript w Q=13 Thanks

  191. chemistry

    find the mass of silver chloride formed from 33.2ml of a 0.100M solution of silver nitrate and 200ml of 0.200M solution of calcium chloride solution Solution plan:use mass to mass calculations mass of AgNO3-moles of AgNO3-moles of AgCl-mass of AgCl

  192. math

    combine like terms: a + 4 -2 +a find out what a= #pleaseandthankyou

  193. Division

    Olivia picked 482 apples from the orchard’s largest apple tree. She divided the apples evenly into 4 bushel baskets. How many apples are in each bushel? How many are left over?

  194. Science. Answer Check

    1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be a. an insulator b. on*** c. disconnected d. off 2. The focus of gravity on an object on the

  195. Chem

    suggest an explanation for the ideal nature of helium compared to the other gases

  196. Psychology

    Is positive psychology the study of happiness? Or is it more broad- the study of all positive human attributes?

  197. elemination

    x=2y-7 8x+5y=7

  198. Trig

    Cicero has a population of 6200 people and is growing at a rate of 8% per year . Mattydale has a population of 8750 and is growing at a rate of 6% per year create and equation solve the problem and in how many years to the nearest year will Cicero have a

  199. math

    a group of 9 people spent $78 to go to the tickets cost$10 each and student tickets cost $8 each.How many adult tickets were purchased?

  200. Science

    What are examples of first, second and third level consumers in the Chesapeake Bay?

  201. Chemistry

    I just need some ideas of what to put for these on my homework examples for extra credit Name a molecule that has: A) Tetrahedral Geometry B) Trigonal planar geometry C) Linear Geometry D) Bent Geometry

  202. Science. Answer Check

    A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True*** False

  203. history

    8. Which characteristic ultimately led to General McClellan’s replacement as Commander of the Union army? his organizational ability his cautious nature on the battlefield his reckless nature on the battlefield* his failure at the first Battle of Bull

  204. math

    use a arrow notation to write a rule for this translation (2,1) (5,3) (-1,4) ?

  205. English

    1. There was a tug-of-war on the playground. The teams drew at 2-2. 2. They did a tug-of-war in the playing field. The game ended in draw. 3. They played the tug-of war at the playground. Class 2-1 won the game at 3-2. (Would you check the sentences? I

  206. math

    What is the common difference d of the sequence? −15, −4, 7, 18, 29, ...−15, −4, 7, 18, 29, ... Enter your answer in the box. d= ?

  207. math

    beth is decorating 24 cards. she decorated 1/3 of the cards on thursday and 1/2 of the cards on friday. What part of the cards does beth still need to decorate? 24 divide by 1/3 is 8 cards on thursday, 24-8=16 remaining cards 16 divide 1/2 is 8 cards on

  208. Chemistry

    How many milliliters of 2.3 M NaOH are needed to neutralize 4.2 mL of a 5.4 M H2SO4 solution?

  209. Art History, college

    Q:In which era did icons develop importance? A: I believe icons developed importance in the early 3rd century due to icons being associated with the early Byzantine and Eastern Orthodox Churches.

  210. Please Help!! (Connexus)

    How do you find your ID number? I'm new to online schooling, and I really need to find it asap. Thank you

  211. Math Question

    A Teacher gives each student a number. She tells the students to line up according to their number. Some students had trouble doing this. What knowledge of number operations are the students missing? Is the answer ordinal numbers?

  212. math

    Taking the speed of the radio signal as 3×108 m/s, calculate the time taken for a signal to reach a GPS receiver from a GPS satellite at a position 21 000 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path

  213. precalculus

    How is the equation of a hyperbola and an ellipse related?How are the graphs of an ellipse and a hyperbola similiar and different?

  214. Psychology Final Exam 2

    Check my answers? 17. A _________ is the functional unit of the nervous system. (1 point) Neuron******* Dendrite Head Cell body 18. The Central Nervous System consists of the __________ and __________. (1 point) heart and blood vessels muscles and tendons

  215. math

    The dimensions of a photograph are30cm ×20cm.what length of wooden frame is needed to frame the pictures?

  216. Chemistry

    Help please. Am doing a past exam paper and I hit a road block with this question: Chloride in a brine solution is determined by a precipitation titration. A 10.00 mL aliquot of the solution is titrated with 15.00mL of standard 0.1182 M AgNO3 solution. The

  217. algebra

    The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function

  218. precalculus

    How are the graphs of an ellipse and a hyperbola similiar and different?

  219. Science

    why are lunar rocks used to determine the age of a earth.

  220. Science PLEASE HELP

    Explain how gravitational, electrical and magnetic force act on a maglev train?

  221. Affine ciphers, modular inverse

    So using the inverse of 17 modulo 26 I have -3(y-4)(mod 26) first am I correct? (I originally started with -3(y+22)(mod 26)) And im now trying to decipher a simple message. Which I will plug the numbers of the letters into the equation instead of y. Again