Steve

Popular questions and responses by Steve
1. Math

Square ABCD has side length 60. An ellipse E is circumscribed about the square and there is a point P on the ellipse such that PC = PD =50. What is the area of E? I got to the part with the point (30, 30). Now what next?

2. math

Marvin the fly starts at \$(0,0).\$ Each step, Marvin moves one unit right or one unit up. He is trying to get to the point \$(5,7)\$. However, at \$(4,3)\$ there is a frog that will eat him if he goes through that point. In how many ways can Marvin reach

3. physic

Calculate the pressure exerted on the ground by a79kg person standing on one foot. Assume that the bottom of the person's foot is 13cm wide and 28cm long.

4. Algebra 1

What is the value of n so that the expression x^2+11x+n is a perfect square trinomial?

5. physics

A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of:

6. physics

A C1= 2.50uF capacitor is charged to 862 V and a C2= 6.80uF capacitor is charged to 660 V . These capacitors are then disconnected from their batteries. Next the positive plates are connected to each other and the negative plates are connected to each

7. Algebra 1

Which point on the axis satisfies the inequality y

8. Math

Find all complex numbers \$z\$ such that \$z^4 = -4.\$ Note: All solutions should be expressed in the form \$a+bi\$, where \$a\$ and \$b\$ are real numbers.

9. english

Nobody on the Tri Rail seems to know ________ way around Miami. A) their B) his C) there D) his or her

10. Chemistry

What is the mole fraction of NaBr in an aqueous solution that contains 20.1% NaBr (weight/weight%)?

11. Algebra 1

suppose y varies directly with x and y = 14 when x = -4 what is the value of y when x = -6

12. math

a multiple choice test has 8 questions with 4 possible answers for each question. if a student were to guess the answer to each question how many different ways would there be to answer the test A. 32 B. 4 C. 65 536 D. 4 096

13. Math

Let R1 and R2 be the remainders when polynomials x^3 + 2x^2 - 5ax - 7 and x^ 3 + ax^2 - 12 x + 6 are divided by ( x + 1 ) and ( x - 2 ) respectively. If 2R1 + R2 = 6, find a. Please work the complete solution.

14. English

Select the noun clause to complete the sentence. They would study (choose) during lunch. Choices How the electoral college works And chat about the news The history of aluminum foil For tomorrow's math exam Is it the last one?

15. English

Select the adjective phrase to complete the sentence. Lucian painted a picture choose With oil paints Of the Taj Mahal And hung it up. During spring break Is the answer during spring break?

17. Physics

How many kg of ice needs to be added to 1.31 kg of water at 64.9°C to cool the water to 14.9°C when the Latent heat of ice = 80 kcal/kg?

18. Algebra2

Expand the logarithmic expression. log8 a/2 My answer is log8a-log8 2

19. English

Which of the following moments in "The Most dangerous Game" represents an example of foreshadowing? a-Whitney & Rainsford';s discussion about hunting b- Rainsford's observing the gate of the chateau c- Whitney's comment about the light of Rio?

20. Algebra2

f(x)=3x-7 and g(x) = -2x-6 find (fog)(4)

21. Algebra

The ordered pairs (1,6), (2,36), (3,216), (4,1296), and (5,7776) represent a function. What is a rule that represents this function?

22. English

Read this excerpt from Alexander Pope's The Rape of Lock "No common weapons in their hands are found/ Like gods they fight l, nor dead a mortal wound.../ See, fierce Belinda on the Baron flies/ With more than usual lightning in her eyes..." This account of

23. Algebra 1

What equation has a graph parallel to the graph of 9x + 3y = -22? 1- y = 3x -22 2- y = -3x + 8 3- y = 1/3 x + 12 4- y = - 1/3 x - 2

24. Inorganic chemistry

The following reaction occurs spontaneously. 2H+(aq)+ca(s) Ca2+(aq)+H2(g) write the balanced reduction half-reaction

25. geometry

Write the standard equation for the circle center (-6,-8), that passes through (0,0). I know that the formula would leave the 1qstr part as (x+6)+(y+8) I'm not sure about the radius when it goes through (0,0)

26. Algebra

What is an algebraic expression for 5 more than z? My answer is z5

27. physics

Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 95.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 21.0 kg. (c)

28. Algebra2

The water level varies from 12 inches at low tide to 52 inches at high tide. Low tide occurs at 9:15 am. High tide occurs at 3:30 pm. What is a cosine function that models the variation in inches above and below the water level as a function of time and

29. Chemistry

Calculate solubility of AgCl (in g/L) in a 6.5*10^-3 M silver Nitrate solution ksp= 1.8 * 10^-10 (AgCl molecular mass is 143.3g) any idea on how to do this this is what i tried> AgCl--> Ag + Cl I 6.5*10^-3 0 C same x E same x ksp = [Ag][Cl] (1.8 * 10^-10)

30. English

Read the following line from Act IV, Scene 5 of Romeo and Juliet, when Capulet speaks of his daughters apparent death: Death lies on her like an untimely frost Upon the sweetest flower of all the field. How does Shakespeare use a simile to emphasize the

31. Algebra 1

Which method would be the simplest way to solve the system? 7x +5y = 19 -7x-2y = -16 graphing substitution elimination or distributive

32. Trigonometry

change 8 cis 240 degrees to rectangular form

33. AP Chemistry

A 12.5843 g sample of ZrBr4 was dissolved and, after several chemical steps, all of the combined Bromine was precipitated as AgBr. The silver content of the AgBr was found to be 13.2160 g. Assume the atomic weights of silver and bromine to be 107.870 and

34. English

Select the adverb clause to complete the sentence. Choose, Fatima will take her dog for a walk. Choices are: In a few hours Always responsible a day reliable Despite the bad weather Before the sun sets I am not sure which one to choose both the first one

35. MATHS

A MAP HAS A SCALE OF 1 CM = 5 KM On a map, a forest is shown as a rectangle measuring 2 cm by 1.5 cm what is the real area of the forest

36. World History

Which of the following is NOT true about bias? Answer: a) Using both biased and non-biased resources in research will create bias results b) Bias can be identified by the facts that the Web site includes as well as the facts that are excluded c) In a

37. English

With which of these statements does the crone in "The Wife of Bath’s Tale" save the life of the knight? • “A woman wants… sovereignty/Over her husband as over her lover…” • "It's little wonder if I twist and wallow!/God that my heart would

38. Algebra2

The function f(theta) and g (theta) are sine functions where f(0)=g(0)=0. The amplitude of f (theta) is twice the amplitude of g(theta). The period of f(theta) is one-half the period of g(theta). If g (theta) has a period of 2pi and fpi/4=4. Write the

39. Algebra2

A pentagon can be divided into 5 congruent triangles. The function y=5 tan theta models the height of each triangle. What is the area of the pentagon if theta = 54 degrees?

40. Algebra2

Simplify the rational expression. State any restrictions on the variable. (n^4-11n^2+30)/(n ^4 -7n^2+10) My answer is n^2-6/n^2-2 except +-sqrt5 and +-sqrt2

41. Geometry

Which rule describes the transformation that is a reflection across the x-axis? a- (x,y)>(x,-y) b- >(-x,y) c_ >(-x,-y) d- >(y,x) my answer is a

42. Algebra 1

What is the excluded value of the rational expression? 2x+6 / 4x-8

43. Math

Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7m the new total area will be 144m^2. Find the length of each side of the original garden.

44. Short Story (Happy Event by Nadine Gordimer)

I have already found the stereotype in the story about how each tribe got along with the same tribe. I need help on finding another stereotype in the story. I am having difficult finding it. The question is: a) Identify another passage from "Happy Event"

45. Algebra 1

a ball is thrown into the air with an upward velocity of 32 ft per second. Its height h in feet after t seconds is given by the function h(t)=-16t^2 +32t+6. How long does it take the ball to reach its maximum height? What is the balls maximum height? a- 22

46. Short Story (Happy Event)

Ella the white protagonist of "Happy Event", has perceptions that are limited by her attitudes and prejudices. She believed she was wise to hire servants who belonged to the same tribe, but "always felt puzzled and rather peevish, then, when, as had

47. English

"Our two souls, therefore, which are one/ though I must go, endure not yet/A breach, but an expansion, Like gold to airy thinness beat." Donne is using irony to trivialize the love between him and his wife. Donne is using conceit to describe the love

48. Algebra2

Use the graph of y=sin2theta to find the value of sin 2 theta for theta=pi/4. a--1 b-0 c-0.5 d-1 my answer is -1

49. Algebra2

What is the product in simplest form? State any restrictions on the variable. 4a^5/7b^4 times 2b^2/2a^4 My answer is 4a/7b^2 except a=0 and b=0

50. English

Archetypes frequently appear in literature with - a- contradictory themes b- general themes c- universal themes d- specific themes my answer is D

51. chem

Consider the reaction: C3H8(g) + 5 O2(g) ® 3 CO2(g) + 4 H2O(g), where DH = – 531 kcal/mol. Which statement is true? A.Heat is absorbed. B.The bonds formed in the products are stronger than the bonds broken in the reactants. C.The products are higher in

52. Chemistry

The molar solubility of Pb(IO3)2 in a 0.10 M NaIO3 solution is 2.4 10-11 mol/L. What is Ksp for Pb(IO3)2?

53. Physics

A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1770 kg. It has strayed too close to a black hole having a mass 109 times that of the Sun. The nose of the spacecraft points toward the black hole, and the

54. Chemistry

A student placed 12.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. The flask was then shaken until

55. Pre-Algebra

Three individuals form a partnership and agree to divide the profits equally. X invests \$9,000, Y invests \$7,000, Z invests \$4,000. If the profits are \$4,800, how much less does x receive compared to having the profits divided in proportion to the amounts

56. Science

1. __________ is an environmental group that works to create awareness of pollution. A. The IRA B. Greenpeace C. Congress D. The FDA My answer is D

57. Environmental Science

1. A prion is an infectious, self-reproducing protein structure. True X False 2. As one organism eats another, toxins can be spread throughout the food chain. True False x 3. The problem with DDT in the environment is that it decomposes quickly. True False

58. Algebra2

solve the equation cos theta - tan theta * cos theta = 0 for 0< theta < 2 pi My answer is pi/4,5pi/4

59. Algebra2

A wave is modeled with the function y = 1/2 sin 3Θ, where Θ is in radius. Describe the graph of this function, including its period, amplitude, and points of intersection with the x-axis. My answers are Amplitude = 1/2 Period = 2pi/3 Intersection= (0,0),

60. Algebra2

What transformations change the graph of (f)x to the graph of g(x)? f(x) = -7x² ; g(x) = -35x²+5

61. geometry

In triangle FGH, g = 8ft, h=13ft, and m=F= 72degrees. Find m

62. Geometry

what type of symmetry does the ying yang symbol have? I don't think it has symmetry

63. English

In both the Gettysburg Address and “Letter from Birmingham Jail,” the writers comment on the tribulations faced by a nation at war. honor those who have fought for freedom. demand the revision of the nation’s unjust laws. expound on the notion of

64. Algebra

Write the decimal .041 as a percent.

65. programming

This pseudocode should detrmine the rental fees for cars // Standard cars rent for \$65 per day; compacts rent for \$40 per day // and subcompacts rent for \$30 per day // Rentals for at least 7 days receive a 20% discount // An error message is displayed if

66. trig

can you help me find cos 2x if sin x = -12/13 (x in 3rd quadrant)

67. Physics

Pulling up on a rope, you lift a 4.35-kg bucket of water from a well with an acceleration of 1.78m/s^2. What is the tension in the rope?

68. trig

Rewrite cos4x as an equivalent expression that does not contain powers of trigonometric functions greater than 1.

69. English

Which line best states the theme of John Donne's Holy Sonnet 10? A. "and soonest our best men with thee do go" B. "Death be not proud, though some have called me" C. "Death be not proud, though some have called thee..." D. ".. And doest with poison, war,

70. math

If Ryan has \$⁢1127 left after spending 1/5 of his monthly salary for rent and 1/7 of his monthly salary for his utility bill, what was his monthly salary?

71. Algebra2

What is the 50th term of the sequence that begins -2,4,10,16? My answer is 292

72. Algebra2

is y=1/4x^0.5 a power function. Explain why or why not.

73. Geometry

Assume the following is a true statement. If it is raining, I will carry an umbrella. Which form of the original statement must also be true? a- converse b-- inverse c- contrapositive d- biconditional My answer is c contrapositive

74. Math

A model rocket is launched from a roof into a large field. The path the rocket can be modeled by the equation y=-0.04x^2+8.3x+4.3 where x is the horizontal distance in meters, from the starting point on the roof and y is the height in meters, of the rocket

75. Math

Piece of paper is 0.0075 inch thick. How many sheets of paper will be in a stack that is 2.25 inches high?

76. Math

One fourth of herd of goats was seen in the forest. Twice the square root of the number of the herd had gone up the hill and the remaining 15 goats were on bank of the river. Find the total number of goats. I got the equation to be x/4 + 2 root x + 15 = x

77. economics

Suppose the price of widgets falls from \$7 to \$5 and consumption of widgets rises from 15 widgets a month to 25 widgets. Calculate your price elasticity of demand of widgets. What can you say about your price elasticity of demand of widgets? Is it Elastic,

78. Maths

Help with the prediction of the next lotto draw.past results are 5 52 14 27 22. 79 64 62 89 8. 75 61 74 22 46. 86 10 72 61 21. 51 13 27 54 74.thanks ps its a 5/90 lotto

A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, there can be 0 interactions. If there are 2 children, there can be 1 interactions. If there are 3 children, there can be 4

80. Algebra2

The amount of oil used by a ship traveling at a uniform speed varies jointly with the distance and the square of the speed. The ship uses 30 barrels of oil in traveling 85 miles at 42 mi/h. How many barrels of oil are used when the ship travels 26 miles at

81. Physics

A heat engine is 20% efficient. If it loses 800 J to the cooling system and exhaust during each cycle, the work done by the engine is: 200 J 1000 J 800 J 20 J

82. Geometry

A pilot sees a guy at an angle of depression of 50 degrees. If the pilot is 200 degrees from the guy, how high is the pilot? Would it be sin(50) x 200?

83. Algebra 1

Suppose y varies directly with x and y = 24 when x =8. What is the value of y when x = 10?

84. Chemsitry

How many grams of ice at -24.3∘C can be completely converted to liquid at 23.9∘C if the available heat for this process is 4.82×103kJ ? For ice, use a specific heat of 2.01J/(g⋅∘C) and ΔHfus=6.01kJ/mol.

85. Math

Solve for 5 X 3 to the nth,. my answer is 15, 45, 135, 405

86. physics

A seagull flies at a velocity of 10.00 m/s straight into the wind. (a) If it takes the bird 18.0 min to travel 6.00 km relative to the earth, what is the velocity of the wind?

87. Statistics

From these past lotto results. 12/05/2011(31-25-36-48-9). 19/05/2011(16-81-59-84-76). 26/05/2011(19-2-57-69-36). Can anyone predict todays winning numbers? It's a 5/90 lotto

88. algebra

The function f(t)=3e^t represents the population of a strand of bacteria, where t is time in hours. What is the population after 30 minutes?

89. english

. Identify the sentence that is correctly punctuated. a. Word Processing and Excel: those are the technology job requirements. b. Word Processing, PowerPoint, and Excel, those are the technology job requirements. c. Word Processing and Excel; those are the

90. Economics

How do falling prices affect supply? I'm having a hard time between either the supply curve moves to the left and the quantity demanded rises. I think the answer is that the quantity demanded rises.

91. Algebra2

3tan 1/3 theta=8 in the interval from 0 to 2pi. Solve the equation.

92. Sociology

television advertisements typically portray the elderly as? a- wise and knowing b- dignified and nurturing c- respectable and accomplished d- feeble and foolish my answer is b

93. Math

What is the value of c so that y=x^2+15x+c is a perfect square trinomial?

94. Physics

A 0.60-kg basketball is dropped out of the window that is 6.1 m above the ground. The ball is caught by a person whose hands are 1.2 m above the ground. (a) How much work is done on the ball by its weight? (b) What is the gravitational potential energy of

95. pysics

A projectile of mass 0.777 kg is shot from a cannon, at height 6.6 m, as shown in the ﬁgure, with an initial velocity vi having a horizontal component of 7.8m/s. The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and

96. physics

In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, 1.3 m above the water level, onto the surface of the water at a point 2.7m from the edge of the pool. Where does the spot of light hit the bottom of

97. English

Which sentence combines these two sentences and includes a relative clause? The twins pretended to be each other. The switch was a huge mistake. Choices The twins pretended to be each other, which was a huge mistake. The twins pretended to be each other, a

Juan has an annuity that pays him \$9400 at the beginning of each year. Assume the economy will grow at a rate of 3.4% annually. What is the value of the annuity if he received it now instead of over a period of 10 years?