# A

Newest questions and responses by A

what is b^2

2. ## math

A diver is on the diving platform at Wonder Mountain in Canada’s Wonderland. She jumps up and dives into the water at the base of the mountain. The equation is d = -3t^2 + 6t + 45 At what time is she 36 m above the water? When is she less than 21 m from

3. ## math

d = 0.08t^2 - 1.6t + 9 A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector. When is the student closest to

4. ## math

d = 0.08t^2 - 1.6t + 9 A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector. How far is the student from the

5. ## math

d = 0.08t^2 - 1.6t + 9 A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector. How far is the student from the

6. ## math

D = 0.08t^2 - 1.6t + 9 Why does this equation above fits this model: A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from

7. ## math

An object is launched at 19.6 m/s from a 58.8 m tall platform. The equation for the object's height above the ground (y) at time tseconds is y = –4.9t2 + 19.6t + 58.8 Use the quadratic formula to find the roots of this equation. What do these numbers

8. ## math

For what value of k does the equation x2 + kx + 9have: Two distinct real roots One real root No real root

9. ## physics

A uniform meter stick ( 100 cm long) that weighs 0.50 N has a 2 N weight located at the 30 cm mark (from the left) and a 5 N weight at the 85 cm mark (from the left). Where along the meter stick is the center of gravity of this system?

10. ## history

How is the concept of patriotism used to persuade people to donate to charities for soldiers' families?

11. ## math

Is my answer correct? Write this quadratic function in the vertex form y = 4(x+5)(x-2) = 4(x² + 3x - 10) = 4(x² + 3x + 9/4 - 10 - 9/4) = 4(x² + 3x + 9/4) - 49 = 4(x+3/2)² - 49 Ans: y = 4(x+3/2)² - 49 Vertex = (-3/2, -49)

12. ## math

Is my answer correct? Write this quadratic function in the vertex form y = 4(x+5)(x-2) = 4(x² + 3x - 10) = 4(x² + 3x + 9/4 - 10 - 9/4) = 4(x² + 3x + 9/4) - 49 = 4(x+3/2)² - 49 Ans: y = 4(x+3/2)² - 49 Vertex = (-3/2, -49)

13. ## math

Find the domain and range of the function y= -3(x-1/3)^2+4/3

14. ## Math

Determine the characteristics of the quadratic function: y = 4(x + 5)(x – 2) Organize these in a chart form, with rows for "Domain", "Range", "Vertex" and "Opens: (Up/Down)"

15. ## math

Write this equation in the vertex form: y= -3x^+2x+1

16. ## Chemistry

Does anyone know how to get the conjugate base of this compound? (Ni(H2O)6)^3+ (aq)

17. ## politicss

why is a new democratic party important?

18. ## Politics

What did Tommy Douglas do that made him such a great Canadian? I need 2 others reason I already have that he Brought in universal health care

19. ## politics

Why is free health care important in a democratic society?

20. ## math

The b2 − 4ac part of the formula is called the discriminant. What happens if the discriminant is greater than 0? equal to 0? less than 0?

21. ## history

In what ways could one contribute to the war effort from Canada?

22. ## civics

identify the three qualities of ideal citizenship that Lester Bowels Pearson has demonstrated

23. ## math

The degree of g(x)= 2x^2+x-1 is A. 3 B. 1 C. -1 D. 2

24. ## civics

Why is it important to have many different ways of resolving conflicts in our society.?

25. ## history

why does society need war heroes?

26. ## Math

Write the equation in vertex form: y= -3x^2+12x+15

27. ## math

Is my answer correct? 6y^2-96/2y^2+18y+40 (6y^2-96)/(2y^2+18y+40) = 6(y² - 16)/[2(y² + 9y + 20)] = (6/2)(y-4)(y+4)/[(y+4)(y+5)] = 3(y-4)/(y+5) : y ≠ -5, y ≠ -4

28. ## Math

Simplify, stating any restrictions on the variables: a. 18a^6bc^7d^3/ 12a^2b^4c^7d b.x^2+5x+6/x^2-2x-15 c. 6y^2-96/2y^2+18y+40

29. ## math

Describe the shapes of each of the following types of function. For each one, state whether or not there are restrictions on the domain or range, and explain why. Linear Quadratic Square Root

30. ## Civics

Consider the issue of Wind Turbines and find two different viewpoints on the controversy; how do they differ? Why do you think they differ? What beliefs and values do they have that might influence their perspective on the issue?

31. ## English

why is simile effective in describing a sound

32. ## Social Studies

Compare and contrast the treatment of different religions by rulers of the Arab empire.

33. ## Social Studies

what does it mean to have good commnication in a marriage?

34. ## history

Several US leaders wanted no part in imperialistic practices. Why did these officials think imperialistic policies were such a bad idea?

35. ## Engineering

6. classical mechanics depends heavily on A. quantum leaps B. ancient theories C. general observations * D. mathematical solutions 7. a virus is a parasite because A. it hunts its prey * B. it only impacts plants C. it lives of other organisms D. it is the

36. ## social

What you would do to ensure a strong relationship in your own life?

37. ## English

If you guys were trying to survive the Titanic How do you think you would feel? How would you react? What would you do to secure your survival?

38. ## math

How many solutions will a system of linear equations have if the lines have the same slopes, but different y-intercepts?

39. ## English

how does global warming connect to overpopulation?

40. ## Math

-4/10x -9 < 9/10 = x < 24 3/4 Did I do this right? was solving for the inequality and the -4/10x is together.

-2/5x-9

42. ## Chemistry

11 mL of 0.0100 M HCl are added to 25 mL of 0.0100 M acetic acid. What is the pH of the resulting solution?

43. ## Math

-9=5/17n A. n=153/5 B. n=5/153 C. n=-17/45 D. n=-45/17

44. ## Math

3(p+q)=p solve for p

45. ## Math

What is the simplified version of this expression 28st/-4t the / meaning its a fraction

46. ## Homework help

Is there any way to post questions with pictures?

47. ## History

What impact did imperial Spain have on the Americas? Spanish culture came to dominate and replace native cultures. Local leaders were replaced by Spanish parliamentary assemblies. Financing from Spain started the industrialization of the Americas.

48. ## Calculus2

Find the area of the region enclosed by the inner loop of the curve. r = 4 + 8 sin(θ)

49. ## calculus2

A manufacturer of corrugated metal roofing wants to produce panels that are u = 48 in. wide and 2 in. thick by processing flat sheets of metal as shown in the figure. The profile of the roofing takes the shape of a sine wave with equation y = sin(πx/12).

50. ## calculus2

How do I evaluate this integral? integral from 0 to 24 of the √(1+[(π/3)*cos((πx/3)]^2)

51. ## calculus2

Evaluate the integral. ∫arctan(√x) dx

52. ## calculus2

Evaluate the integral. ∫[0,1](12/4x^2+5x+1)dx

53. ## calculus2

Evaluate the integral using the indicated trigonometric substitution. (Use C for the constant of integration.) ∫√((x^2-4)/x)dx x=2sec(t)

54. ## calculus2

A tank is full of water. Find the work required to pump the water out of the spout. (Use 9.8 m/s^2 for g. Use 1000 kg/m^3 as the density of water. Assume r = 9 m and h = 3 m.) The tank is a spherical shape with r as the radius(9m). On top of the tank is a

55. ## calculus2

Use cylindrical shells to find the volume V of the solid. A right circular cone with height 9h and base radius 5r. The answer is 75πhr^2 but my answer is 39πhr^2. How???

56. ## calculus2

Use cylindrical shells to find the volume V of the solid. A sphere of radius r

57. ## calculus2

Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y = x − 1, y = 0, x = 8; about the x-axis.

58. ## calculus2

Find its area. y = sec^2(x), y = 8 cos(x), −π/3 ≤ x ≤ π/3

59. ## chem

Why does temp of water used for transferring and washing the precipitate matter? 1. to maximize evaporation 2. to minimize evaporation 3. to maximize the amount of product that dissolves in water

60. ## Language Arts *Last One I Promise*

1. If you were writing a brief profile of Rosa Parks explaining why you admire her, which of the following sentences would make the best thesis statement? In 1955, Rosa Parks refused to give up her seat on a bus. Rosa Parks's refusal to give up her seat

61. ## chem TITRATION

1. If a student fails to remove a large air bubble in the buret before beginning the titration, what will be the effect on the volume of titrant required to reach the titration endpoint? A. The student will record a volume that is SMALLER than it should be

62. ## Language Arts

*First off sorry there are so many, I just wanted to check because it's always better safe than sorry* Identify the correctly punctuated sentence in each group. A.) Do you know where Bailey shoes are? B.) Do you know where Bailey's shoes are?* C.) Do you

63. ## Language Arts

Identify the incorrectly punctuated sentence The child wore a pink cotton shirt. We had a tiring, hot day outdoors. She cooked a delicious healthy meal.**** (I think it's missing a comma) The game was a suspenseful, exciting experience.

64. ## LA

. Which of the following quotes from "The Morning of June 28, 1948" Best describes the aversion that the public felt toward Shirley Jackson's short story "The Lottery?" A) “As a matter of fact, when I read it over later I decided that except for one two

65. ## Language Arts

n Edgar Allan Poe's "The Cask of Amontillado," the literary device of foreshadowing is used to create mystery when Montressor tells Fortunato a. "You are a man to be missed." b. "A draught of this Medoc will defend us from the damps." c. "You were not to

66. ## conversions math

convert 70.5 in^3 to cubic feet? how would you convert this

67. ## chemistry

If you have 1.00 M sodium chloride solution, and you have 300. mL of it, how many grams of sodium chloride are there?

68. ## Social Studies

How did the end of world war 2 impact Minnesota's economy? How did the GI Bill help encourage economic growth in Minnesota and the rest pf the naiton? How are the growth of highways and suburbs related?

69. ## Chem

A dilute aqueous solution of Na2SO4 is electrolyzed between Pt electrodes for 3.70 h with a current of 2.77 A . Part A What volume of gas, saturated with water vapor at 25∘C and at a total pressure of 742 mmHg , would be collected at the anode? The vapor

70. ## Chem

At 298 K, 1.20 mol BrCl(g) is introduced into a 10.0 −L vessel, and equilibrium is established in the reaction. BrCl(g)⇌1/2Br2(g)+1/2Cl2(g) A) Calculate the amount of BrCl(g) present when equilibrium is established. [Hint: Use ΔG0[Br2(g)]=3.11kJ/mol,

71. ## chemistry

At 298 K, 1.20 mol BrCl(g) is introduced into a 10.0 −L vessel, and equilibrium is established in the reaction. BrCl(g)⇌1/2Br2(g)+1/2Cl2(g) A) Calculate the amount of BrCl(g) present when equilibrium is established. [Hint: Use ΔG0[Br2(g)]=3.11kJ/mol,

72. ## Physics

The binding energy of a nucleus is the amount of energy needed to A.Remove a proton from the nucleus. B.Remove a neutron from the nucleus. C.Disassemble the nucleus. D.Fragment the nucleus. E.Fuse or join two of the nuclei together. Please help!

73. ## physics

A 68 kg stunt- woman falls off a bridge and travels 32.0 before colliding with a pile of mattresses. The mattresses are compressed 2.00 m before she is brought to rest. Calculate the magnitude of the average force exerted by the mattresses on the

74. ## Writing

Essay question: How does playing violent video games influence violence in those who play them? Playing violent video games influence violence in those who play them? *Those who play them: I clarified my audience to specifically adolescents because young

75. ## Physics

On a cold winter day, the outside temperature is –5.0 °C while the interior of a well-insulated garage is maintained at 20.0 °C by an electric heater. Assume the walls have a total area of 75 m2, a thickness of 0.15 m, and a thermal conductivity of

76. ## Chemistry

What is the final temperature when 2.50 x 10^5 J are added to 0.950 kg of ice at 0.0 degrees C? The specific heat capacity of water is 4186 J/(kg·degrees C) and the latent heat of fusion for ice is 3.35×10^3 J/kg.

77. ## physics

If a very large iceberg were to float to warmer waters and melt, what, in principle, would happen to the overall sea-level? A. sea-level would rise very slightly. B. sea-level would fall very slightly. C. sea-level would stay the same. *I would say A

78. ## Physics

A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.80 m above the floor with a speed of 7.80 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.40 m/s. What is the work done on the ball by air

79. ## Calculus

The total stopping distance T of a vehicle is shown below, where T is in feet and x is the speed in miles per hour. T = 2.5x + 0.5x^2 Approximate the change and percent change in total stopping distance as speed changes from x = 15 to x = 18 miles per

80. ## physics

An electron experiences an electric force of 0.70 nN . What’s the field strength at its location?

81. ## math

A parking lot space is in the shape of a rectangle. If the space has a length of 23 feet and a width of 12 feet, what is the area of the parking space?

82. ## Calc (Derivatives)

I understand finding the derivative and there is a simpler way of doing so, however, can someone show you derive at these answers by the DEF'N of Derivatives? Much appreciated! Question 1: Find, from the definition, the derivative, f'(x), for

83. ## Calc: Limits

how to calculate the limit: *I got confused especially with the square root. 1. lim as x approaches 2 (squareroot x^2 +5)-3 / (x-2) 2. lim as θ (theta) approaches zero (tan^2 (5θ) / (sin (3θ) sin (2θ) )

84. ## English comp

I need suggestions on how I could rephrase these without being repetitive and that the point comes across. Thank you (: 1. Alcohol is a dangerous recreational substance that many Americans very much abuse to what their body could take. 2. The reason why

85. ## help[

what is a + a?

86. ## Physics

A girl delivering newspapers travels 1 blocks west, 2 blocks north, then 4 blocks east. What is the magnitude of her resultant dis- placement? Answer in units of blocks. 002 (part 2 of 3) 10.0 points Find the direction (measured from due east, with

87. ## Algebra 1

Breathless Cosmetics now offers 24 shades of eye shadow, 20% more than last year. How many shades were offered last year?

88. ## statistics

In the game of​ roulette, a wheel consists of 38 slots numbered​ 0, 00,​ 1, 2,..., 36. To play the​ game, a metal ball is spun around the wheel and is allowed to fall into one of the numbered slots. If the number of the slot the ball falls into

89. ## Bio

There are a lot of components to the question. How can I answer this with a paragraph? Need help. Explain the role of sex chromosomes in inheritance> Answer must include: 1. Anatomical differences as result of XX/XY, 2. Arrangement and structure of X and

90. ## physics

an 85.0kg mountaineer remains in equilibrium while climbing a vertical cliff. the tension force in the supporting rope is 745 N. Find the magnitude of the reaction force F, which the cliff exerts on the mountaineer's feet.

91. ## Physics

Two cars with different motors are competing. One of the cars accelerate från 0-90 km/h on 12 seconds, the other one accelerate from 0-90 km/h on 20 seconds. The acceleration is the same all the time. After 90km/h, the velocity is constant. How many

92. ## Physics

A train has a velocity of 117 km/ h and discover another train standing stil 1200 meters away. The train starts immediately to brake. After 10 seconds the other train finally starts to move away from the first train. The acceleration is equable of both

93. ## Math

Complete the table and state the rule. Input | Output 0|0 |3 2| 3|9 | 5|15 6| I think the rule is Output = Input x 3 but I don't know how the rule should be worded. I think the chart should look like: Input | Output 0|0 1|3 2|6 3|9 4|12 5|15 6|18

94. ## la

The speaker in "Birches" compares the boy's climbing to a. girls dying there hair b. sweeping up broken glass c. a forest full of spiderwebs d. filling a cup to the top I think D

95. ## History

Economic principle # 1 is " principle choose". Employers choose to offer benefit packages to their employees. Apply the key economic principle "the consequences of choices lie in the future" to this decision. What are the important costs and benefits that

96. ## Calculus

Rectilinear Motion Discuss the Velocity, Acceleration, and Speed: 1. s(t)=2t^2 +8t-7 2. s(t)=3t^4 -16t^3 +24t^2

97. ## Trigonometry

State the quadrant in which theta lies. sin(theta) > 0 and cos(theta) > 0 How can I determine this? Please explain.

98. ## Trigonometry

Point P is located at the intersection of the unit circle and the terminal side of angle theta in standard position. Find the coordinates of P to the nearest thousandth. theta = -105degrees Please explain the steps. I'm completely stuck.