# Brian

Newest questions and responses by Brian
1. ## sociology

What is the best way to characterize the health care that the poor receive? inferior superior because of government insurance the same as care for wealthy people inferior only for the elderly poor about the same as for the average American

2. ## health

Which one of the following groups has the highest incidence of diabetes in the U. S.? Hispanic Americans Native Americans Asian Americans White Americans I think it's white americans, but i'm not sure

3. ## earth science

what are risks associated with human-caused extinction?

4. ## earth science

How are “natural hazard” (hazardous event) and “disaster” defined? What is the connection between them that determines the size of a disaster caused by a hazard? You can use an example to explain the connection.

5. ## probability

Busy people arrive at the park according to a Poisson process with rate λ1=3/hour. Relaxed people arrive at the park according to an independent Poisson process with rate λ2=2/hour. Assume that no other people arrive at the park. During the last 10

6. ## probability

1. Busy people arrive at the park according to a Poisson process with rate λ1=3/hour and stay in the park for exactly 1/6 of an hour. Relaxed people arrive at the park according to a Poisson process with rate λ2=2/hour and stay in the park for exactly

7. ## probability

When you enter your bank, you find that there are only two tellers, both busy serving other customers, and that there are no other customers in line. Assume that the service times for you and for each of the customers being served are independent

8. ## probability

Let X and Y be independent Erlang random variables with common parameter λ and of order m and n, respectively. Is the random variable X+Y Erlang? If yes, enter below its order in terms of m and n using standard notation. If not, enter 0.

9. ## probability

Consider a Poisson arrival process with rate λ per hour. To simplify notation, we let a=P(0,1), b=P(1,1), and c=P(2,1), where P(k,1) is the probability of exactly k arrivals over an hour-long time interval. What is the probability that we will have “at

10. ## probability

For each exam, Ariadne studies with probability 1/2 and does not study with probability 1/2, independently of any other exams. On any exam for which she has not studied, she still has a 0.20 probability of passing, independently of whatever happens on

11. ## math

(7z^ m )(nz ^ 3 )=−14z

12. ## Physical Science

A rectangular container measuring 20 cm x 47 cm x 68 cm is filled with water. What is the mass of this volume of water in kilograms and grams please?

13. ## science

A rectangular container measuring 20 cm x 47 cm x 68 cm is filled with water. What is the mass of this volume of water in kilograms and grams?

14. ## life orientation

define the concept risk behavior and explain why it is important for teenager to investigate and be knowledgeable about it

15. ## Math

In a game, 5 points are awarded for each game and 2 points are deducted for each game lost,Kyler attempted 15 games,if he got 68 points,how many gamesvdid he lose?

16. ## MATH

Find and simplify the diﬀerence quotient for the given function. f(x)= -x^2+2x-1 I need to know how to set up the equations and simplify everything when dividing by h at the end.

17. ## Physics

In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2

18. ## Physics

In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2

19. ## Physics

Physics question regarding reflection. Based on what I got from the reading, the law of reflection states that the angle incoming is the same as the angle outgoing. So I'm assuming the answer is C where the reflection should be about the same as you, but I

20. ## Math

a rectangular prism 3cm x 5cm x 6cm is painted and is then cut into 1cm^3 cubes. What is the total unpainted surface area of these cubes? - Please help! I do not understand this question.

21. ## Physics

How does the electric potential energy (EPE) between two point charges depend upon their separation s? a. EPE ∝ 1/s b. EPE ∝ s c. EPE ∝ 1/s2 d. EPE ∝ s2 I want to say it's a. since it's part of the formula UE = kq1q2/s but I'm not too sure if that

22. ## Calculus

assuming the population of the earth changes at a rate proportional to the current population further, it is estimated that at time t=0, the earth's population was 600 million, at t=300, it's population was 2.8 billion. find an expression giving the

23. ## math

which of the following is an example of an open equation? 1)5x+7=12// 2)12+(-8)=4// 3)25=5(5)//4)8+0=8

24. ## Language arts

What is the personal pronoun in this sentence? The children showed me their favorite games to play. children me the games My answer is B

25. ## algebra

translate into algebraic expression 24 more than twice Greg's age

26. ## Bus. Math 123

Problem: Invoice-Nov. 27. Date goods recvd. ? Terms- 2/10 EOM. Last day of discount- ? Final day bill is due ? Complete above.

27. ## Science - chemistry

Write the complete ionic equation for the reaction of magnesium phosphate with lead (II) nitrate. Include which ions will be aqueous and which compound will precipitate. (Valences: Mg=+2, PO4=-3, Pb=+2, NO3=-1)

28. ## Chemistry 12

The following data was obtained after 25.00ml of benzoic acid was titrated with potassium hydroxide. Volume of KOH used: Trial 1: 27.80ml Trial 2: 27.88ml Trial 3: 27.66ml Initial pH: 3.125 pH at 13.92ml: 5.013 Find the Ka for this sample of citric acid

29. ## math/statistics

In a survey of 200 employees of a company regarding their 401(k) investments, the following data were obtained. 150 had investments in stock funds. 78 had investments in bond funds. 60 had investments in money market funds. 46 had investments in stock

30. ## math/statistics

In the Numbers Game, a state lottery, four numbers are drawn with replacement from an urn containing balls numbered 0-9, inclusive. Find the probability that a ticket holder has the indicated winning ticket. The first three digits in exact order.

31. ## math/statistics

In a survey of 400 individual investors regarding subscriptions to the New York Times (NYT), Wall Street Journal (WSJ), and USA Today (UST), the following data were obtained. 120 subscribe to the NYT. 146 subscribe to the WSJ. 68 subscribe to the UST. 36

32. ## math

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

33. ## math

A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of \$2/unit of Product A and a profit of \$7/unit of Product B. To manufacture a unit of Product A

34. ## math

A financier plans to invest up to \$500,000 in two projects. Project A yields a return of 8% on the investment of x dollars, whereas Project B yields a return of 13% on the investment of y dollars. Because the investment in Project B is riskier than the

35. ## math

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

36. ## math

A financier plans to invest up to \$500,000 in two projects. Project A yields a return of 8% on the investment of x dollars, whereas Project B yields a return of 13% on the investment of y dollars. Because the investment in Project B is riskier than the

37. ## math

A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of \$2/unit of Product A and a profit of \$7/unit of Product B. To manufacture a unit of Product A

38. ## math

The difference between two numbers is 3. Eight times the larger number is 10 times the smaller number. Write a system of equations describing the given conditions. Then solve the system by the substitution method and find the two numbers.

39. ## math

Determine graphically the​ x-value when y equals 3y=3 in the given equation. y equals 5 minus x y=5-x

40. ## C++ programming

Elevator Bank Design and Implementation 1 Project Description The goal of this project is to design and develop C++ code and algorithms to control a bank of elevators, which services many oors and transports people \eciently ", that is, as per the given

41. ## Math

the thirteenth term of an arythmeticprogression is 27. given that the seventh term equals to three times the second term, find: the first term nd the common difference of the progression

42. ## Life

Fill In My Blank Spaces

43. ## math

Sam has twice as many books as Jim. If Sam gives 12 books to Jim, they will have the same number of books. How many books to they have altogether?

44. ## Calculus

Suppose the integral from 2 to 6 of g of x, dx equals 12 and the integral from 5 to 6 of g of x, dx equals negative 3 , find the value of the integral from 2 to 5 of 3 times g of x, dx

45. ## Pre-Calculus

How do I solve the equation: 3 = 2.1 sin[(pi/6)t - 5pi/6] + 3.2

46. ## Math

If cscØ = 4/3, find sinØ + sinØ cot^2 Ø

47. ## Precalculus

Every point in the plane has exactly two polar coordinates. A)The statement is true because every point in the plane has a unique polar representation. B)The statement is false because left parenthesis r comma theta right parenthesis equals left

48. ## Precalculus

Find the magnitude and direction angle θ of the vector. u=4(cos102°i+sin102°j)

49. ## Physics

A ball with mass m=1kg and speed vo=5m/sec elastically collides with a stationary, identical ball (all resting on a frictionless surface so gravity is irrelevant). A student measures the top ball emerging from the collision at at speed vt=4m/sec at an

50. ## History

Which adjective best describes Ming China’s position toward European trade? a.diplomatic b.equivalent c.inviting d.restrictive

51. ## Math

It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower?

52. ## stats

If a student answers 40 multiple choice questions, each with four possible answers, by guessing randomly, the probability that she answers at least 15 correctly

53. ## Math

Place grouping symbols to make the equation true: 3x5-8+7-3/6=13

54. ## calculus

Cars on a certain roadway travel on a circular arc of radius r. In order not to rely on friction alone to over­ come the centrifugal force, the road is banked at an angle of magnitude 0 from the horizontal. The banking angle must satisfy the equation rg

55. ## calculus

A patrol car is parked 50 feet from a long warehouse The light on the car turns at a rate of 30 revolutions per minute. How fast is the light beam moving along the wall when the beam makes the fol­ lowing angles with the line perpendicular from the light

56. ## calclus

A fish is reeled in at a rate of 1 foot per second from a bridge 15 feet above the water. At what rate is the angle between the line and the water changing when 25 feet of line is out? (Assume the fish stays near the surface of the water.)

57. ## Calclus

A point is moving along the graph of y = 1/(1 + x^2) so that dxldt = 2 centimeters per minute. Find dy/dt for the following values of x. (a) X = -2

58. ## calclus

A point is moving along the graph of y = 11(1+x2) so that dx/dt = 2 centimeters per minute. Find dy/dt for the following values of x. (a) X = -2 (b) X = 0 (c)X=2 (d)X=10

59. ## calculus

A point is moving along the graph of y = x2 so that dx/dt is 2 centimeters per minute. Find dy/dt when (a)x = 0 and (b)x = 3.

60. ## Calculus

All edges of a cube are expanding at the rate of 3 centimeters per second. How fast is the volume chang­ ing when each edge is (a) 1 centimeter and (b) 10 centimeters?

61. ## calculus

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at the rate of 10 cubic feet per minute. The diameter of the base of the cone is approx­ imately three times the altitude. At what rate is the height of the pile changing

62. ## Calculus

A spherical balloon is inflated with gas at the rate of 20 cubic feet per minute. How fast is the radius of the balloon increasing at the instant the radius is (a) 1 foot and (b) 2 feet?

63. ## Math

The length of a rectangular board is 10 cm longer than its width. The width of the board is 26 cm. the board is cut into 9 equal pieces. What is the area of each piece? What are the possible dimensions of each piece?

64. ## Physics

If C⃗ = -5 i^ - 3 j^ - 4 k^, what is C⃗ × j^? If = -5 - 3 - 4 , what is × ?

65. ## US history

how did the Virginia colony survive with the help of the English colonists?

66. ## Geometry

A rectangular prism is measured 84 cm(l) x 42cm (w) x 56cm h. What is the largest size cube that fits the dimensions of the prism? Number of cubes required? Maximum length of the edge of the cube that fits 64cm, 42cm, and 56cm is _____cm. Number of

67. ## Math

simplify 10×10^4+2.8×10^6

68. ## Statistics

How do I answer: A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of scoring above x = 209 is 0.0228

69. ## Algebra

I need some help on this math problem. 3c^2 - 5c - 7.8 = -2.2

70. ## math

can someone explain how to solve just not answer: IxI if x = 12 the I are a bar?

71. ## Math

On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?

72. ## Math

On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?

73. ## Geometry

Explain why knowing a combination of four pairs of equal sides or equal angles guarantees one of the congruence relationships.

74. ## Math- Geometry

Explain why knowing a combination of four pairs of equal sides or equal angles guarantees one of the congruence relationships.

75. ## Math

Prove that an exterior angle of a triangle is equal to the sum of the non adjacent interior angles of that triangle. Use the following variables in your proof. Exterior angle=w Interior adjacent angle= x Interior non adjacent angle1= y Interior non

76. ## Math

A 2-digit number is twice the difference of its digits. What is the number?

77. ## Math

A 2-digit number is twice the difference of its digits. What is the number?

78. ## Math

Six apples cost as much as four pears. Each pear costs \$4 more than each Apple. What is the cost of one pear?

79. ## Calculus

Evaluate as limit approaches 0. (Without using l'hopital's rule. ( Sqrt(4+sin(x))-2 ) / (3x)

80. ## Chemistry

Calculate the total amount of heat that must be added to convert 15.7g of ice at its melting point to steam at 100.0°C

81. ## Science

A transformer with 1890 turns in its primary coil has to decrease the voltage from 4620 V to 220 V for home use. How many turns should there be on the secondary coil?

82. ## Physical Science

A 20.0-Ù resistor and a 45.0-Ù resistor in parallel are connected to a 120-V dc source. (a) What is (are) the current(s) through the resistors? current through the 20.0-Ù resistor: Incorrect: Your answer is incorrect. . A current through the 45.0-Ù

83. ## English

Nine Haikus During a Drought In the dusty lane A frog waits for a puddle To fall from the sky Which form best describes this poem? A. limerick B. Haiku C. Concrete D. Narrative My choice is B. Haiku What about the poem best supports the answer to the

84. ## science

A bullet of 29g is shot from a gun of mass 20kg with a muzzle velocity of 200ms if the bullet is 30cm long.determine. a)acceleration of the bullet b)the recoil velocity of the gun

85. ## physics

4. A gun’s bullet was launched horizontally with a speed 600m/s. It fell to the ground 300m away from the gun. a. How long was the bullets flight? b. At what height was the gun’s barrel at the moment of the shot? 5.

86. ## physical science

A golfer on a level fairway hits a ball at an angle of 38° to the horizontal that travels 85 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 85 yd. At what

87. ## Chemistry

Given that ΔH (fusion) of water is 6025 J/mol, Cp,m(ice) = 37.7 J K–1 mol–1, and Cp,m(water,liquid) = 75.3 J K–1 mol–1, calculate ΔG (in J) for the freezing of 89 moles of water at 1 atm pressure and the constant temperature T = 14.4 °C. I got

88. ## engineering science

calculate the work done required to push a car for 420 meters up an melon the force required to push the car is equal to 615n

89. ## chemistry

A sample of nitrogen has a volume of 50.0L at a pressure of 760mmHg. What is the volume of the gas at each of the following pressures if there is no change in temperature? A. 1500mmHg B. 4.00 atm C. 0.500atm

90. ## Math

Jane buys a coat that is \$18 off the orinigal price. This is a 30% discount. What is the original price of the coat? Please explain how to get answer? Thanks

91. ## math

Taylor's home street address number has five digits. Two digits have values of 60,000 and 300.the last digit is 9.the value of each of the other digits is ten times the value of the digit on it's right. What's Taylor's home street address number.

92. ## math

Susie loves Starbucks coffe today,while waiting to place her order for her salted caramel macchiato , she noticed the prices for the three sizes that were available 12oz for \$3.60 16oz for \$4.96 20oz for \$5.20 which size is the better unit rate

93. ## Math

Missing base 1/9= [. ] with exponent 2 please explain how I can get the answer thanks

94. ## Math

Missing exponent of 1/169=(1/13) please explain how I can find the missing exponent

95. ## English

Background Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your town. But you also know she

96. ## math

if i ran 1&5/8 mile and than later ran 9/10 of a mile what is the amount

97. ## Chemistry

How many ml of water must be added to 40.0 ml of 2.50 m koh to prepare a solution that is 0.212 m?

98. ## Southridge

What's the process if the input numbers are 1,2,3,4,5 and the output numbers are 2,5,10,17,26