# Anon

Questions and responses by Anon, page 6
1. ## Math

Consider the curve represented by the parametric equations x(t)= 2+sin(t) and y(t)=1-cos(t) when answering the following questions. A) Find Dy/Dx in terms of t B) Find all values of t where the curve has a horizontal tangent. C) Find all values of t where

2. ## Physics, emf, magnetic flux

A circular loop of wire with radius 0.100 m and resistance R = 5.00 Ω. The loop is placed in a magnetic field of strength B = 0.125 T, which can be rotated. The angle of the magnetic field with respect to the normal of the loop is θ(t), where t denotes

3. ## Social Studies

You work for President Lula's government. You are most likely to support A) tax cuts for corporations.**** B) privatization of industry C) redirection of oil wealth to provide social services. D) budget cuts to education and health care

4. ## ymous

You're standing 14 feet from the edge of a cylindrical water tank and is 26 feet from the point of tangency. the tank is 10 feet tall. what is the volume in cubic feet

5. ## Math

I got the answers already and correct me if I am wrong. I just need help finding the mean and standard deviation for section B. A quiz consists of 8 multiple choice questions, each with 5 possible answers. a. If a student guesses on all 8 of the questions,

6. ## Geometry

The volume of a square pyramid is equal to _____ times the volume of a cube where the bases are the same, but the square pyramid is half the height of the cube.

7. ## MATH HELP ASAP

identify the sequence as arithmetic, geometric, or neither. please explain answer 1.6,0.8, 0.4, 0.2,...

8. ## math

A metal worker has a metal alloy that 15% copper and another one is 70% copper. how many kilograms of each alloy should the metalworker combine to make 120kg of a 48% copper alloy?

9. ## algebra

please check the following answers and review the questions. tank you 1. 2/3 * negative 6 * 5 my answer: -100 2. a landscaper installs 12 sections of trellis. each section of trellis is 3/4 yard long. how many yards of trellis are installed altogether? my

10. ## chemistry

A solution with a pH of 7 has a [OH1-] of? 1 x 10-7 M?? Is that correct

11. ## Math

Which of the following statements is not always true? A. In a rhombus, the diagonals bisect opposite angles. B. In a rhombus, the diagonals are perpendicular. C. In a rhombus, the diagonals are congruent. D. In a rhombus, all four sides are congruent. I

12. ## chemistry

net ionic equations of nitric acid with CO3 2- and with PO4 3-.

13. ## english

Based on previous knowledge of Greek values, what prediction can best be made about Antinous’s future? Antinous’s friends will rally around him, and he will be victorious in battle. Antinous will gain great power and win the heart of Penelope at last.

14. ## math

This is a discussion on Connections Academy Algebra Readiness; Lesson 10 Unit 3. Student A believes the square root of 2 over 8 is a rational number because it can be written as a fraction. Student B believes that the square root of 2 over 8 is an

15. ## us history

What was the result of the Seneca Falls Convention in 1848?  (6 points) A. Paulina Davis' shocking speech B. The Declaration of Sentiments C. the push for anti-slavery legislation D. the creation of the National Woman Suffrage Association I THINK IT IS

16. ## History @Reed

July 10. We can assure the Public, that Spinning is so much encouraged among us, that a Lady in Town… has within about three Weeks become a very good Spinner, though she never spun a Thread in her Life before." What is the most likely source of this

17. ## Calc

Let f be the function that contains the point (-1,8) and satisfies the differential equation dy/dx=10/(x^2+1) (a) Write the equation of the tangent to f at x=-1. (b) Use your equation in part a to estimate f(0). (c) We know that the integral from -1 to 0

18. ## Social studies

Suppose the president vetoed a bill passed by Congress. According to the information, which of the following actions by Congress would most likely ensure that the bill will become? 1) let the veto stand 2) reintroduce the same legislation 3) try to

19. ## Stats

A pizza parlor has 13 different toppings available for its pizzas, and 2 of these toppings are pepperoni and anchovies. If a customer picks 2 toppings at random, find the probability that pepperoni is one of the toppings. Round to four decimal places.

20. ## Chemistry

Calculate the standard free-energy change for the following reaction at 25 C degrees. 2Au^3+(aq)+3Ni(s) 2Au(s)+3Ni^2+(aq) Ni2+(aq) + 2e¨C ¡ú Ni(s) E=¨C0.26 Au3+(aq) + 3e¨C ¡ú Au(s) E=+1.498 G= ? KJ Would it be G=1.758?

21. ## History

What was an effect of the Napoleonic Wars on Europe? the collapse of the traditional empires of Austria and Russia the spread of popular ideas of monarchical power and imperial rule increased influence by the Ottoman’s Empire on Europe following

22. ## chemistry

An ethylene glycol solution contains 18.2g of ethylene glycol (C2H6O2) in 85.4mL of water. Calculate the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.)

23. ## Physics

A 17 g rifle bullet traveling 220 m/s buries itself in a 3.9 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement. Horizantal ____ J

24. ## algebra

Check my answer? What is the order of the numbers from least to greatest? A= 6.2x10^5, B= 1.1x10^-3, C= 4.3x10^-3, D= 5.2x10^-5 I think it's D,B,C,A (5.2x10^-5, 1.1x10^-3, 4.3x10^-3, 6.2x10^5)

25. ## maths

Sketch the region bounded by the x-axis, the curve y = x2 + x + 1 and the lines x = 2 and x = 5. Write down a deﬁnite integral that represents the area of that region Just stuck getting points for the first equation as when I put y=0 I got a complex

26. ## 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.

27. ## calculus

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

28. ## Geometry

A cylindrical water tank has a diameter of 20 feet and a height of 15 feet. How much water is needed to fill the tank?

29. ## Biology

You are testing a hypothesis that population density of a particular plant species influences the rate at which a pathogenic fungus infects the plant. Because the fungus causes visible scars on the leaves, you can easily determine whether a plant is

30. ## Chemistry

The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq)

31. ## physics

Explain the difference between an object or a person free-falling without a parachute and with a parachute. Use your free-body diagrams as a reference.

32. ## physics, electric circuits

Using Kirchhoff's laws for the loops ADCA and BCDB write an expression of the resistance of the PRT in terms of L1, L and the value of the standard resistor. Circuit provided: imgur image: mQYi7RH.png (add imgur . com / before it).

33. ## Chemistry, Periodic Table

Very brieﬂy explain the main horizontal and vertical features of the Periodic Table in terms of the electronic structure and relevant quantum numbers? -------------- Am I being asked to state for instance in the case of Halogens that as we progress down

34. ## Math Unit 3

1. Complete the paragraph proof Given: ∠A and ∠B are complementary, and ∠B and ∠C are complementary Prove: ∠A ≌ ∠C By definition of complementary angles, m∠A + _____ = 90° and m∠B + m∠C+ _______. Then, m∠A + m∠B = m∠B + m∠C by

35. ## Science Help Practice

Calculate the speed of an 90,000 kg airplane with a kinetic energy of one billion Joules. What is the mass of a car that has a kinetic energy if 4,320,000 J moving at 23 m/s? My answer to number 1= 149.07 second one- not sure. I looked up the internet for

7.) How many moles of fluroine are required to react with 12 g of sodium iodide? I already balanced it but am confused to go from here F2 + 2 NAi ---- 2 NaF + I2 12 g NaI + 2 mol NAI/149.89 gNAi * 1 mol NAF/1 mol NAi * 1 mol F2 / 2 mol NaF 1.) how many

37. ## Help @Damon

Which answer puts these Revolutionary Period events in the correct order? Boston Tea Party, Stamp Act, Declaration of Independence Stamp Act, Boston Tea Party, Declaration of Independence Boston Tea Party, Declaration of Independence, Boston Massacre

38. ## SCIENCE!

more on hypotheses hypotheses help explain puzzling situations or events. hypotheses answer "how", "what, and "why" questions. explain each of the following situations with a hypothesis: 1. you hang a bird feeder, fill it with food, but no birds come to

39. ## Physics

The blades of a ceiling fan have a radius of 0.393 m and are rotating about a fixed axis with an angular velocity of +1.36 rad/s. When the switch on the fan is turned to a higher speed, the blades acquire an angular acceleration of 1.82 rad/s2. After 0.475

40. ## physics

A meter stick is suspended vertically at a pivot point 27 cm from the top end. It is rotated on the pivot until it is horizontal and then released from rest. What will be its maximum angular velocity (in radians/second)?

41. ## Chemistry

The reaction between nitric oxide (NO) and oxygen to form nitrogen dioxide (NO2) is a key step in photochemical smog formation. 2 NO(g) + O2(g) 2 NO2(g) (a) How many moles of NO2 are formed by the complete reaction of 0.404 mole of O2? (b) How many grams

42. ## geometry

If a street is drawn by dilating segment FG about center A with a scale factor greater than 1, which of the segments could be that street and why? 1.BC because BC||FG and the scale factor is greater than 1. 2. FG because FG is parallel to itself and the

43. ## Biology AP DNA Bases/Genetics

FIRST: Only answer if experienced in this field, no counter-questions, "I used to take this but I forgot," or random link-posting. A triplet of bases in a template strand of DNA is 5' CAG 3'. What would be the corresponding codon for mRNA? A) 3' GTC 5' B)

44. ## math

Determine vector, parametric, and if possible, symmetric equations of the line through A(-3, 5, -5) and B(9, 2, -1).

45. ## Chemistry

At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.49. What is the Ksp of the salt at 22 °C?

46. ## AP Chemistry

The Lewis structure of PF3 shows that the central phosphorus atom has __________ nonbonding and __________ bonding electron pairs. Is the answer 1, 3 Is it 1 because it asked for PAIRS- so there are two electrons not bonded- so one pair?

A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m What maximum height does he reach?

48. ## Spanish

? Select the number which best completes this sequence: 200, 400, 600 A. ochocientos

49. ## Spanish (double check my work please)

Choose the sentence in which the "" word is grammatically correct. A. Esta varilla negra "está" parada sobre otra cosa negra. B. Esta varilla negra "esta" parada sobre otra cosa negra. C. Esta varilla negra "es" parada sobre otra cosa negra.

50. ## chemistry

what is the reaction equation when maleic anhydride is combines with granular zinc and HCl propose structures for the products you would obtain by treating fumaric acid, cinnamic acid, and butynedioic acid with zinc and HCl. write balanced equations for

51. ## physics

Use the concepts of force, acceleration, and speed to explain how a parachute works. Make sure your answer explains how Newton’s laws of motion play a part.

52. ## Algebra

What is the slope of the line who goes through the points (4, 2) and (7, -4) ?

53. ## Physics

Optics/Lens problem. Is the image real or virtual? A converging lens of focal length f1 = +22 .5cm is placed at a distance d = 60 .0cmtotheleft of a diverging lens of focal length f2 = −30.0cm. An object is placed on the common optical axis of the two

54. ## Math

Find the lower, upper and interquartile range 20,22,25,28,29,30,32,33,34 Math is not my best subject.

55. ## algebra

A soccer ball is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 48t where t equals the time in seconds and h(t) represents the height of the ball at time t seconds. What is the axis of symmetry, and what does it

56. ## Geometry

A rectangle has an area of 6 square meters. What will be the area of the rectangle if each side length is increased by a factor 5? A. 11 square meters B. 30 square meters C. 125 square meters D. 150 square meters I think the answer is B

57. ## Geometry

The circumference of a circle changes from 20 to 4 after a dilation. What was the scale factor of the dilation? A. 1/25 B. 1/5 C. 5 D. 25

58. ## Data Management

if mike does homework today the probability that he will do it tomorrow is 0.8. the probability he will do it today is 0.7. what are the odds that he will do it both today and tomorrow

59. ## chem

When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 1.0 M HCl is required to react completely with 4.00 g of magnesium i did 4.00g x (mol/24.31 g Mg) x (2 mol HCl/1 mol Mg) x (L/!.0

60. ## Algebra

Given that a+1/(b+(2/c))=17/5, where a is the integer part of the mixed number, and c is the numerator of the fraction part of the mixed number when the mixed number is written in least terms, find the product abc.

61. ## Algebra

When kevin commuted to work one morning, his average speed was 45 mph. He averaged only 30 mph for the return trip because of an accident on the highway. If the total time for the round trip was 50 min determine the distance between his place of work and

62. ## chemistry

The following equation is the balanced combustion reaction for C6H6: 2C6H6(L) + 15O2(g) --> 12CO2(g)+6H2O(L)+6543 kj If 7.700 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of

63. ## Help @Damon

I am not responsible for paying taxes to the British king. Which kind of colonist most likely made this statement? A Loyalist, because most Loyalists believed Britain owed payments to the colonies A British official, because British colonial leaders argued

1. Andean countries in South America include: *Ecuador and Bolivia *Peru and Chile *Ecuador and Columbia *Venezuela and Brazil I chose all except Peru and Chile. 2. Which of the following statements about the ancestry of most of the people of Central

65. ## AP Calc

The picture to the right shows the Ben Franklin Bridge which stretches across the Delaware River joining Pennsylvania and New Jersey. The center span of the bridge is about 4200 feet long. The suspension cables hang in parabolic arcs from towers 750 feet

66. ## Geometry

Maria is making a stained glass window in the form of a kite. The width of the window must be 15 in., and she only has enough stained glass to cover 60 in. What should the height of the window be? A. 4 in. B. 6 in. C. 8 in. D. 12 in.

67. ## English-Grammar

Identify the word or words the best describes the underlined(in parentheses) word for the question (Comparing the two essays), it is obvious that one relied on more thorough research. A.prepositional phrase B.participial phrase C.gerund phrase D.infinitive

68. ## Physics

A speeder traveling at a constant speed of 102 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (9 km/h)/s until it reaches its maximum speed of 146 km/h, which it maintains until it catches up with the speeder. How

69. ## Earth CRYience

Assume a parcel of air on the surface with a temperature of 29 degrees Celsius with a relative humidity of 50%. If the parcel rises at what altitude should clouds form?

70. ## geometry

Two lines intersect, forming two pairs of vertical angles. One of these angles is 110°. What are the measures of the three remaining angles? a 70, 70, 180 b 70, 70, 70 c 110, 70, 70 d 110, 110, 70 is it d?

71. ## Math

There were 1090 people on a beach. If 10% of the people left. How many remained? thank you.

72. ## Social Studies

"...I long to hear that you have declared an independency- and by the way in the new Code of Laws which I suppose it will be necessary for you to make I desire you would Remember of the Ladies, and be more generous and favorable to them than your

73. ## Calculus

Consider the following planes. 5x − 4y + z = 1, 4x + y − 5z = 5 a) Find parametric equations for the line of intersection of the planes. b) Find the angle between the planes

74. ## Algebra 2 pt 2

I need help making a table 3. One of the fireworks is launched from the top of a 70ft tall building with an initial upward velocity of 150 ft/sec. a. What is the equation for this situation? g=-32ft/s^2 b. When will the firework land if it does not

75. ## physics

The British Sovereign coin is an alloy of gold and copper having a total mass of 7.988 g and is 22-karat gold. (a) Find the mass of gold in kg using that # of karats = 24 x (mass of gold)/(total mass). (b) Calculate the volumes of gold and copper used to

76. ## Chemistry

At –11.0 °C (a common temperature for household freezers), what is the maximum mass of aspartame (C14H18N2O5) you can add to 1.50 kg of pure water and still have the solution freeze? Assume that aspartame is a molecular solid and does not ionize when it

77. ## english

Based on Teach Every Child About Food, which two passages best identify the speaker’s perspective on the importance of educating people about healthier eating? Select all that apply. a There’s sugar in everything. I knows the ins and outs of those

78. ## Math

b. Alice’s school is selling tickets to the school carnival. On the first day of ticket sales, the school sold 3 adult tickets and 9 student tickets for a total of \$75. The second day, the school sold \$67 by selling 8 adult and 5 student tickets. What is

79. ## chemistry

If you have 500 ml of .15M Formic Acid, what is the pH of this solution? What is the pKa? How many grams of Sodium Formate would you have to add to raise the pH to 3.85? How many grams of HCl would you have to add to lower the new pH by .2 ?

80. ## Help

Is the Grammarly plagiarism checker reliable? I put one of my short answers in there a while ago and it said that there was significant plagiarism. Now, about one-two weeks later, I put in the same paragraph and it is saying that there is no plagiarism. I

81. ## English

List the characteristics that are unique to Arthur and to Sundiata. What qualities do the two characters have in common? I need help figuring out which qualities are unique to Arthur and which are unique to Sundiata.

82. ## Chemistry

You are approaching a stoplight. If the frequency of the light being emitted is approximately 520 THz, what was the wavelength of the light? What color was the light? v = c/λ 520 THz --> 5.2x10^14 Hz 5.2x10^14 Hz = 3.0x10^8 m/s λ = 1.56 x 10^23 m Not

83. ## Algebra 1- Help please

Belinda wants to invest \$1000. The table below shows the value of her investment under two different options for three different years: Number of years 1 2 3 Option 1 (amount in dollars) 1100 1210 1331 Option 2 (amount in dollars) 1100 1200 1300 Part A:

84. ## Physics - Angular Speed Question

A merry-go-round can be modeled as a disk with radius 2.5 meters and mass of 150 kg. For this problem, assume the density is uniform. It is initially rotating at 2.0 rad/sec. Two children of mass 30 kg and 40 kg hop onto the merry-go-round and stay near

85. ## Maths

Plastic drinking straws are manufactured to fit into drinks cartons which have a hole in the top. A straw fits into the hole if the diameter of the straw is less than 3 mm. The diameters of the straws have a normal distribution with mean 2.6 mm and

86. ## science

Green algae grow in the fur of the South American sloth. The green algae provide camouflage for this tree-doweling mammal, and from the fur and skin of the sloth the algae obtain moisture. A moth also lives in the fur. The moth larvae provide waste

This is what I have to do "Draw a map of mainland U.S.A. and show (draw)how the mississippi river divides the country (part of the labeling) and label both sides correctly." I was wondering if you can find me a map that way I can start it off like how

88. ## math

Find the intersection points for the circles: (x+2)^2+(y-3)^2=25 and (x-1)^2+(y+4)^2=16

89. ## Physics help

A ladder of length 2L and mass M is positioned on level ground leaning against a wall such that the angle between the ladder and the horizontal is α. The coefficient of static friction between the ladder and the wall and between the ladder and the ground

90. ## ET3034TUx Solar Energy

The width of the space charge region at a p-n junction is reduced by applying a voltage bias over the p-n junction. What is the correct statement on both the bias voltage and the p-n junction? a)The voltage is a forward bias and the diffusion of the

91. ## English

What are the stories that go with each of the tools that Sanders discusses in his essay "Inheritance of Tools?" I don't really understand what the question wants, so I started by saying the history of the hammer. What can I write about the other tools?!

92. ## Earth Science

What are the minimum and maximum durations of daylight at a latitude of 39 degrees north? Thanks.

93. ## Earth Science

I need help, please! Only two questions, I don't know the first one. 1. Suppose that a report shows that, for a given year, the levelized cost of energy (LCOE) of new construction projects is expected to be \$0.0545 per kWh for solar energy and \$0.0995 per

94. ## Computer Science

Playing a video game on a computer can give different experiences based on the performance capabilities of the computer’s hardware (typically processor and graphics card – among other things). Developers of a new game will typically have

95. ## math

Determine vector, parametric, and if possible, symmetric equations of the line through D(-4, 3, 6) and parallel to the z-axis. Vector form: + t Parametric: x = -4 y = 3 z = 6 + t Symmetric: x = -4 , y = 3 , z - 6 Is this right?

96. ## Physics

A concave mirror with a radius of curvature of 1.7 m is illuminated by a candle located on the symmetry axis 3.7 m from the mirror. Where is the image of the candle? Answer in units of m

97. ## Mathematical Induction

Use mathematical induction to prove that the following is true. 8+11+14...+(3n+5)=1/2n(3n+13), for all n in the set of natural numbers.

98. ## chemistry

How many milliliters of a 0.250 M acetic acid solution must be added to 50.0 mL of a 0.750 M NaOH solution to produce a buffer solution with pH = 4.500 ? The pH is given by which we can calculate the concentration of [H+] How do we approach the problem