# D

Popular questions and responses by D
1. ## Math

Jeremy loves right triangles that have side length 1. In fact, he loves to combine them so that the hypotenuse of one becomes the leg of the next. If the longer leg of the first triangle is sqrt 11, what will be the hypotenuse of the 2014th triangle? I

2. ## Math (Updated)

F(x)=9x^3+2x^2-5x+4 and g(x)=5x^3-7x+4. what is f(x)-g(x)? Show all of your steps and write your finial answer in factored form.

3. ## Calculus 1

If you have 280 meters of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?

4. ## Calculus, math

Consider the function below. (If an answer does not exist, enter DNE.) f(x) = e^arctan(7x) I did the problem but I have mistakes on some items. I think the ff. are right: Vertical Asymptote: x = DNE Horizontal Asymptote: y = e^-(pi/2), e^(pi/2) Interval

5. ## Finance math

9. Compute the present value of \$4,000 paid in five years using the following discount rates: 10 percent in year 1, 2 percent in year 2, 12 percent in year 3, and 9 percent in years 4 and 5.

6. ## U.S. History

1. What would this image convey to someone from the early-1900s about about the suffrage movement? (image: "early-1900s women's suffrage painting"-- this has a sign on it that says "official program women's suffrage procession" a person riding a horse and

7. ## Finance

1. What is an entrepreneur? (1 point) a sole proprietorship a corporation one who opens a new business a bank that loans money 2. Which of the following is the best definition of probable operating costs? (1 point) Amount of money required to start a

8. ## physics

(c) Tube (c) is again filled with water. A1 and A2 are the same as in part (b). Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a height h = 0.43m above the height of the water in the left side

9. ## Chemistry

Consider the reaction: 2CH4(g) + 3O2(g) + 2NH3(g) --> 2HCN(g) + 6H2O(g) If 203.5 g NH3 is reacted with excess CH4 and O2, what mass in grams of HCN can be produced?

10. ## math

You flip a fair coin 10,000 times. Approximate the probability that the di fference between the number of heads and number of tails is at most 100.

11. ## physics

A light, rigid rod l = 5.55 m in length rotates in the xy plane about a pivot through the rod’s center. Two particles of masses m1 = 9.8 kg and m2 = 2.4 kg are connected to its ends find the moment of inertia

12. ## GEOMETRY

parallelogram with a side of 40in a base of 36in and a height of 33in. WHAT IS THE AREA?

13. ## math

The owner of a service station receives a loan of \$8,500 at 10.5% for 7 months. Find the amount of simple interest

14. ## German

Ich schminke mich lieber als er sich. is this incorrect or correct?

15. ## Physics

An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit. During the space walk, the unit ejects

16. ## chem

Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and 753 mmHg will be produced

17. ## Math

Given line AB, explain how to construct a square with sides of length AB.

18. ## chemistry

Given a 1.00 L solution that is 0.60 M HF and 1.00 M KF, calculate the pH after 0.080 mol NaOH is added, and calculate the pH after 0.24 mol HCl is added to the original solution.

19. ## precalc

write a linear equation to fit each situation or description. 1) the line through (2,4) parallel to the x axis. 2) the line through (2,4) perpendicular to the x axis. 3) the line through (3,1) perpendicular to y=4x-3. 4) the line through (-2,5) parallel to

20. ## physics

A light, rigid rod l = 5.55 m in length rotates in the xy plane about a pivot through the rod’s center. Two particles of masses m1 = 9.8 kg and m2 = 2.4 kg are connected to its ends. Determine the angular momentum of the system about the origin at the

21. ## Finance kennedy king

4. A firm's net income last year was \$1.5 million. Its net income grew 5 percent during the last 5 years. If that growth rate continues, how long will it take for the firm's net income to double?

22. ## Math

A couple needs \$15,000 as a down payment for a home. If they invest the \$10,000 they have at 8% compounded quarterly, how long will it take for the money to grow into \$15,000?

23. ## chemistry

Iwish to prepare 3% NH3 from 20ml strong NH4OH and 180ml H2O.Can you help me?

24. ## Physics

Well, hard to imagine the picture, but by the description the wires each side are at 16 deg. back on each side of the tooth, i.e. each at 16 deg. to the face of the tooth. Each has 18N. tension. (sin 16) x 18 = 4.9608N. Double it (2 wires), = 9.9216N. back

25. ## geometry

Given the quadrilateral ABCD with the following vertices A(-4, 0), B(10, 0), C(10, 10), and D(0, 14), find its area.

26. ## geometry

In ΔABC, angleB = 46°, angleC = 28° and AB = 50. Find BC (to the nearest hundredth).

27. ## AP Chemistry

The molar mass of a volatile liquid (one which vaporizes easily) can be determined by a the DUMAS METHOD.' In this process a small amount of the liquid (a few drops) is placed in a clean flask. The mouth of the flask is covered with a piece of foil that

28. ## math

If the probability that an identified hurricane will make a direct hit on a certain stretch of beach is 0.10, what are the odds in favor of a direct hit? a. 1:10 b. 1:9 c. 9:1 d. 8:1

What are the steps leading to a trail, the importance of the Sisxth Amendment, The process of jury selectin and the procedures of ajury trail. The fundamental philosphies surround the purpose of sentencing. The factors that go into the determination of

30. ## accounting

how do i record adjusting and closing entries for a service business? how do i do a post-closing trial balance?

31. ## Math

Find the two square roots of 5-12i in the form a+bi, where a and b are real. Mark on an Argand diagram the points P and Q representing the square roots. Find the complex number of R and S such that PQR and PQS are equilateral triangles. How do you do the

32. ## Math

a. Do some research and find a city that has experienced population growth. Determine its population on January 1st of a certain year. Write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a

33. ## chemistry

Please balance magnesium sulfate and iron III acetate

34. ## Science

How is velocity different from speed?

35. ## math

Kevin had \$15 with him. His mother gave him \$10 and his father also gave him some money. After this, he had a total of \$37 with him. How much money did his father give him? Write an equation with a variable and state what the variable represents.

36. ## Geometry

1.1.Determine whether the regular pentagon has reflection symmetry, rotation symmetry, both, or neither. If it has reflection symmetry, state the number of axes of symmetry. If it has rotation symmetry, state the angle of rotation. For each type of

37. ## engineering mechanics

the greatest and least resultant of two forces are respectively 17 KN and 5 KN. determine the angle between two force when their resultant is root 144 KN.

38. ## Stats

the average placement test score of a sample of 64 students out of 1000 registered at a community college is 70 with a standard deviation of 15. Construct a confidence interval with a 5% chance of error.

39. ## Physics

A 26.2 g marble sliding to the right at 62.0 cm/s overtakes and collides elastically with a 13.1 g marble moving in the same direction at 15.5 cm/s. After the collision, the 13.1 g marble moves to the right at 77.5 cm/s. Find the velocity of the 26.2 g

40. ## physics

You walk 51 m to the north, then turn 30° to your right and walk another 45 m. How far are you from where you originally started?

41. ## physics

a woman weighs Fg=650 when standing on a stationary scale. The woman is riding an elevator from the 1st floor to the 10th floor. As the elevator approaches the 10th floor, it decreases its upward speed from 9 m/s to 1 m/s in a time interval of 1 second.

42. ## health

Whats the largest bone in your body?

43. ## Calculus

Finf (dy/dx) y=(1+28x^3)f(x)+(6x)g(x)(x^4+5x+7)+(6x)g(x)(x^4+5x+7)-(e^x+7x^4)f(x)+3x^2g(x)(4x^3+5+7)/((x^4+5x+7)^2

44. ## stats

suppose that a population of people is 1200. .25 of the population is white. we take a random sample of 100 people. What is the probabilit that more than .29 of these people are white?

45. ## Chemistry

What preperation produces a 2.0 Mole solution of C6H12O6? a) 90.0 grams of C6H12O6 dissolved in 500.0 mL of solution b) 180.0 grams of C6H12O6 dissolved in 1000mL of solution c) 90 Grams of C6H12O6 dissolved in 1000mL of solution D) 180.0 Grams of C6H12O6

46. ## Physics

A baseball (m = 135 g) approaches a bat horizontally at a speed of 40.4 m/s (90 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the ball by

47. ## Physics

The drawing shows a circus clown who weighs 710 N. The coefficient of static friction between the clown's feet and the ground is 0.49. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum

48. ## statistics

In a survey of 400 college students, 40 were left-handed. Treating the sample as if it were random and using 0.015 as the standard deviation of the sampling distribution of the sample proportion, what is the lower bound of a 95% confidence interval for the

49. ## World Civ

What were the social and administrative foundations of the absolute power of Ming Quing emperors?

50. ## Math

Jake says that adding 0 does not change a sum. Is he correct? explain.

51. ## Chemistry

When 1.0 g of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mL a) How many megajoules are released when 3.0 of gasoline burns? b) If a television requires 150 kJ/h to run, how many hours can the television run on the energy

52. ## Chemistry

A sample of 0.43 moles of a metal M reacts completely with excess chlorine to form 18.23 grams of MCl. How many moles of Cl are in the sample of MCl that forms?

53. ## calculus

A missile is fired at an angle of 75 from the horizontal. At one point, its speed was 900 mph. Find its horizontal velocity in miles per minute

54. ## Physics Mechanics

A banked circular highway curve is designed for traffic moving at 57 km/h. The radius of the curve is 211 m. Traffic is moving along the highway at 48 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow

55. ## chemistry

Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides i'm not sure about II because HF has the highest boiling point but fluorine

56. ## chemistry

Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides i'm not sure about II because HF has the highest boiling point but fluorine

57. ## chemistry

At 100 degrees celsius, the ratio of the average kinetic energy of oxygen molecules, O2, to the average kinetic energy of methane molecules, CH4, is: A) 4:1 B) 1:4 C) 1:2 D) 1:1 I think it's D because the kelvin temperature is the same for both collection

58. ## algebra

how can 2 boys weighing 100lbs each and a man weighing 200lbs cross the river in a boat that only holds 200lbs safely?

59. ## Calculus

A particle moves in a straight line with velocity t^-2 - 1/9 ft/s. Find the total displacement and total distance traveled over the time interval [1,4]. I found out that the total displacement is .4116 But I cannot find the total distance traveled.

60. ## AP Chemistry

What is the Dumas Method in regards to the molas mass of a gas?

61. ## Chem

5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?

62. ## College Chem

How many liters of carbon dioxide at 20 oC and 750 torr are produced when one gallon of toluene is burned? C7H8 + 9O2 ==> 7CO2 + 4H2O 1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. moles

63. ## Fundamentals of Cost Analysis (Economic Analysis)

What would be the present value of an item that has a salvage value of \$25,000 at the end of five years? Assume a discount rate of 3.8% for an end-of-year factor. Carry calculations to four decimal places.

64. ## home economic

Which of the following gadgets is best for making a soft-shell shape out of butter? A. A curler C. A masher B. A peeler D. A pick

65. ## begining algebra

One side of a triangle is three times the shortest side. The third side is 7 feet more than the shortest side. The perimeter is 62 feet. Find all three sides.

66. ## Criminal Justice 200

What are the steps to take for pretrail?

67. ## Criminal Justice 200

What would a person consider two main functions of criminal law. How can you identify one justification and excuse defense?

68. ## CHEM

How do I work the following question? I found the amu of CaCO3=101.0872g/mol; 2HCL=72.92128g/mol; H2O=18.1582g/mol;CO2=44.0098g/mol; and, CaCl2=110.9834g/mol. You carefully weigh out 10.00g of powder and add it to 40.50g of solution. You notice bubbles as

5+2

70. ## Math

Given the proportion a/b =8/15, what ratio completes the equivalent proportion a/8 =? How do I do this?

71. ## health

what is an inflammation of the mucous membrane if the bronchial tubes caused by smoking

72. ## Sociology

So I am genuinely interested in what other people's opinions are on how racial discrimination might affect economic stratification in the US?

73. ## Spanish

What are least two different ways you can ask what you or someone is like in Spanish?

74. ## Photographer

Describe the post secondary training or education required for that field.... what does that mean? What are some examples?

75. ## English Research Paper *Edit*

What does everyone think of these questions: What are the positive effects music has on the mind? Can those positive effects change a mindset on something / the way you think? Can music calm the mind? After a bad day, or even deescalate a situation. How

76. ## History

One of the impulses of the constitution of 1845 a physical responsibility Former slaves importance of high taxes increase state debt Why was he Texas her station of 1845 twice as long as the one written before it select only two it decreased a large number

77. ## Math (3 of 3) *Final*

8. Factor 5t² - t -18 9. Factor 25x² - 9 10. Factor 9t² + 12t + 4

78. ## Math (2 of 3)

4. Find the GCF of the polynomial, then factor. 8v⁶ + 2v⁵ - 10v⁹ 5. Simplify the product of the binomial [5t + 4]² 6. A rectangle has dimensions 3x  1 and 2x + 5. Write an expression for the area of the rectangle as a product and in standard

79. ## Math (1 of 3)

1. Simplify and write in standard form. Then, classify the polynomial by degree and number of terms [5x³ + 3x² - 7x + 10] + [3x³ - x² + 4x - 1] 2. Simplify and write in standard form. Then, classify the polynomial by degree and number of terms. [9w -

80. ## Mathematics 1 of 3

1. Simplify and write in standard form. Then, classify the polynomial by degree and number of terms. (5x^3 + 3x^2 - 7x + 10) - (3x^3 - x^2 + 4x - 1) 2. Simplify and write in standard form. Then, classify the polynomial by degree and number of terms. (9w -

81. ## Math

Determine if the number is written in scientific notation. If not, explain; 3 x 100⁻⁶. A. No; it is not written as a power of 10. B. No; the first factor is not a number between 1 and 10. C. Yes; the number is written in scientific notation. I'm almost

82. ## Math

How would I do these? 6. The speed of sound is approximately 1.2 × 10³ km/h. How long does it take for sound to travel 7.2 × 10² km? Write your answer in minutes. 7. Evaluate the function below over the domain {-1, 0, 1, 2}. As the values of the domain

83. ## Science (Last question of these)

Ball A, with a mass of 10kg, is moving to the right at 20 m/s. Ball B is moving to the left at 20 m/s. Upon collision, Ball B comes to a standstill, and Ball A moves to the left at twice its original speed. What is the mass of ball B? How do I do this?

84. ## Science

Ball B, with a mass of 30kg, is moving to the left at 10 m/s. With what velocity should Ball A, with a mass of 10kg, move to the right and collide with 2, so that ball A rebounds with a velocity of 30 m/s, and Ball B with velocity of 10 m/s, after the

85. ## Science

Ball A, with a mass of 20 kg, is moving to the right at 20 m/s. At what velocity should Ball B, with a mass of 40 kg, move so that they both come to a standstill upon collision? How do I solve this?

86. ## chemitry

Liquid sodium is being considered as an engine coolant. how many grams of liquid sodium (minimum)are needed to absorb 3.60 MJ of energy(in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 degree celcius? use Cp=30.8

87. ## social studes

Which of the following was not a sign of the breakdown of royal government in Georgia?

88. ## MATH PLZ HELP

Simplify the expression: 15 − 3[2 + 6(−3)]

89. ## Science

PLEASE DO NOT THINK I AM CHEATING AND ASKING FOR ANSWERS. DO NOT LECTURE ME, I AM SIMPLY ASKING WHAT IN THE HELL THIS MEANS: Collecting and Analyzing Data There are two types of observations: qualitative and quantitative. Qualitative observations use words

90. ## Math

If centripetal force acts towards the center of a circle, why do we get pushed to the outside of the circular path when rounding a curve? What is responsible for this sensation? Some have erroneously referred to this sensation as a centrifugal force. What

91. ## math

As part of a school science project, Jacob bought some bulbs for a total of \$18. The cost of each bulb was \$3. How many bulbs did Jacob buy? Write an equation with a variable and state what the variable represents.

92. ## ELA plez help

what statement is true about dialogue? 1.The words each character says are enclosed by quotation marks 2. the words each character says appear next to the characters name. 3. The words that the main character says appear in italics or brackets 4. the words

93. ## physics

A crate with a mass of (111.5) kg is lifted by a crane. If the crate is accelerating upward at (2.7) m/s2, what is the tension in the cable? Give your answer in newtons (N) and with 3 significant figures.

94. ## Math

If a water bottle holds 1.5 litters of water if I open a new bottle an drink half how much water is left

95. ## finance

the school you would like to attend costs 100,000, to help finance your education you need to choose whether or not to sell your 1000 shares of Apple stock , 1000EE Savings Bonds (with denominations and 4.25% coupon rate) that are five years from their

96. ## Algebra 1- Urgent

Part A: Sam rented a boat at \$225 for 2 days. If he rents the same boat for 5 days, he has to pay a total rent of \$480. Write an equation in the standard form to represent the total rent (y) that Sam has to pay for renting the boat for x days. (4 points)

97. ## Trigonometry

a line which passes through the origin contains point A (-0.714, 0.700) . find the gradient of the line and the angle formed with respect to the positive x-axis in Degrees

98. ## physics

Find the time constant (T) for the RC circuit with an open switch given t = 10 ms 50% of Qmax charge T = ? Q = CV (1-e -t/T)