# Posts by MELISSA

Total # Posts: 1,343

1. ### Venn Diagram Help Please

If P(A)=.60, P(A/B)=.50, AND P(B)= .40, answer the following. draw a venn diagram for the probabilities of A and B.

MATH-STAT

if P(A)=.60, P(A/B)=.50, AND P(B)= .40, answer the following. 1) events A and B are independent =FALSE true or false or cannot determine 2) events A and B are disjoint =TRUE true or false or cannot determine 3) find P(A and B) =??????

. With what kind of life are the images in the second stanza of “Beat! Beat! Drums!” are usually linked?
5. ### math

There are 3 reds, 4 blues, 6 whites and 5 yellows in a bag. What is the probability that the first two you draw are both red if you do not replace the first one?
6. ### Physics

Light with a wavelength of 500 nm (5. 10-7 m) is incident upon a double slit with a separation of 0.28 mm (2.80 10-4 m). A screen is located 2.7 m from the double slit. At what distance from the center of the screen will the first bright fringe beyond the center fringe appear...
7. ### Physics

Light with a wavelength of 500 nm (5. 10-7 m) is incident upon a double slit with a separation of 0.44 mm (4.40 10-4 m). A screen is located 2.1 m from the double slit. At what distance from the center of the screen will the second dark fringe beyond the center fringe appear? ...
8. ### health

BMI is used to screen for______?
9. ### weight

researchers found that a ____ is more important and is the key to losing weight rather than a popular one.
10. ### health

for adults which ranges reflect an accurate BMI category
11. ### weight

why is having abdominal fat a serious concern
12. ### health

in order to loose weight you have to ___
13. ### health

national weight control registry
14. ### health

Why are fad diets considered unhealthy?
15. ### weight

Obesity can cause a person to develop what type of conditions?
16. ### weight

If you decided to lose weight then ____ help?

1)How can you indicate that the bacteria have taken up the plasmid? 2)What is the purpose of the LB/amp(-) plate? Should there be bacterial growth on the plate? 3) Why would one compare plates LB/amp (-) and LB/amp (+)?

1)How can you indicate that the bacteria have taken up the plasmid? 2)What is the purpose of the LB/amp(-) plate? Should there be bacterial growth on the plate? 3) Why would one compare plates LB/amp (-) and LB/amp (+)?
19. ### math

y=-2x-1 how to set up to find what x is, this needs to graph as a linea equation.
20. ### Physics

A test charge of +3.00 10-6 C experiences a downward electrostatic force of 11 N when placed at a certain point in space. What are the magnitude and direction of the electric field at this point?
21. ### physics

Two identical thin wires are oriented along the x and y axes. With current on x plane going North. Current on y plane going West.Both carry the same current I, and there is no electrical contact between the wires. The points A, B, C, D are each equidistant from both wires. A: ...
22. ### Math

Use implicit differentiation to find the slope of the tangent line to the curve y/( x + 4 y) = x^4 – 4 at the point (1,-3/13)
23. ### Math

Steve, That still isn't the correct answer :(
24. ### Math

Use implicit differentiation to find the slope of the tangent line to the curve y/( x + 4 y) = x^4 – 4 at the point (1,-3/13)
25. ### Microbiology

if the original concentration of phage was markedly increased from the concentration that you received, how could you ensure that you had between 30-300 plaques on your plate? (instead of TNTC)
26. ### Statistic HELPPPPPP

A linear model can be used to describe the relationship between fuel economy(mpg) and horsepower (hp) for certain automobile models. mpg=46.868-0.0838 hp R^2=75.5% 1) Give the symbol and the value of the correlation coefficient. 2)What would the gas mileage be for a car with a...
27. ### math

A Model M3SWE mandolin has a list price of \$1299.90, with a chain discount of 5/3/2. (A) What would be the trade discount amount? (B) What would be the net price?
28. ### Math

Amy Powell invested \$8500 twice a year in an ordinary annuity at New York Securities for a period of 5 years at an annual interest rate of 10% compounded semiannually. Using the ordinary annuity table , calculate the total value of the annuity at the end of the 5-year period
29. ### Diff eq

y'(x)=sqrt2y(x)+7, y(4)=1 Solve the seperable diff eq

Determine which sampling method was used in each scenario. on a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened. Airport security uses a random number generator to determine the next passenger to screen.

Determine which sampling method was used in each scenario. on a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened. Airport security uses a random number generator to determine the next passenger to screen.
32. ### history

Who came to power in China, instituting a Communist regime that would bring great suffering to the nation's people
33. ### Math

I don't get this question at all.Can you help me?
34. ### Global History

How were the Mongols able to conquer so much territory so rapidly?
35. ### statistics

A television program director has 14 shows available for Monday night and 5 shows must be chosen. How many different possible combinations are there?
36. ### math

a wheel makes 8 1/10 revolutions per minute if it rotates for 85 mins. how many revolutions will it make
37. ### Math

The Midtown Middle School cheerleaders earned \$175 at a car wash. If this amount is 25% of the cost of a new set of uniforms, what is the total cost fora a set of uniforms? Explain your reasoning.
38. ### general chemistry

so to get volume, you do v=(1.33)*3.14*99e-7^3????
39. ### general chemistry

the radius of a chlorine atom is 99 pm and its mass is 5.89 X 10^-23 grams what is the density
40. ### chemistry

inorganic chemistry
41. ### chemistry

I am supposed to add NH4 and C2H3O2 together and write the new ion. Would it be NH7C2O2? do I add the hydrogens together and were would it go in the order then?
42. ### Sociology HELPPPP

How does deviance and crime function both for and against society? Be sure to include social control in your answer group.
43. ### Chemistry

so you get your 760 torr because that is your total and you subtract your 17.5 torr and you get 742.5 and that is your pO2
44. ### Vector Calculus

An airplane is traveling in the direction 20degrees west of north at 700 km/hr. Find the component form of velocity of the airplane assuming that the positive x-axis represents due east and the positive y-axis represents due north.
45. ### american government

judicial review is the power of the american courts to:
46. ### algebra

Determine which of the flowing points lie on the line given by the equation 3x+6y=12
47. ### Physics

A sound wave is traveling in warm air when it hits a layer of cold, dense air. If the sound wave hits the cold air interface at an angle of 23 degree angle, what is the angle of refraction? Assume that the cold air temperature is -10 degrees C and the warm air temperature is +...
48. ### physics

A particular guitar string is supposed to vibrate at 210Hz , but it is measured to vibrate at 220Hz By what percent should the tension in the string be changed to correct the frequency?
49. ### Physics

Assuming the fluid has a density of 1.00 (g/cm^) at what height h should the bottle be placed so the liquid pressure is 38mm-Hg ? B.At what height h should the bottle be placed so the liquid pressure is 460mm-H_2O ? C.If the blood pressure is 18 {mm-Hg} above atmospheric ...
50. ### Physics

Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 40m above that pipe. Pa?
51. ### Physics

A 7.9cm diameter horizontal pipe gradually narrows to 5.9cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0kPa and 21.0kPa , respectively. What is the volume rate of flow? in m3/s please help!
52. ### Biology

The half-life of Carbon-14 is 5730 years. What is the age of a fossil containing 1/16 the amount of Carbon-14 of living organisms? Explain your calculation.
53. ### Physics

a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks!
54. ### physics

A 160kg horizontal beam is supported at each end. A 330kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports?
55. ### Physics

SOrry! the units are 11500rmp 1.52 m*N 6.07kg 0.0750m
56. ### Physics

A centrifuge rotor rotating at 11500 is shut off and is eventually brought uniformly to rest by a frictional torque of 1.52 . a.If the mass of the rotor is 6.07 and it can be approximated as a solid cylinder of radius 0.0750 , through how many revolutions will the rotor turn ...
57. ### Algerbra

Combine and show all work please 3/2y+2/y-1-2/y
58. ### Algerbra

simplify a-1/a ___________ 2+3/2+1/a^2
59. ### math

Use the tangent line approximation to approximate the value of ln(1.004)
60. ### Chemistry

thanks! But it turns out I was over thinking it!
61. ### Chemistry

In this lab experiment you will make 100.0 mL of a 0.100 M solution of Co(NO3)2. However you must calculate the number of moles of compound that will be needed (moles= Molarity x Liters).Then calculate the mass of Co(NO3)2 that will need to be weighed out (mass= moles x molar ...
62. ### math

a small business loan in the amount of 50,000 with an interest rate of 9% that compounds monthly for 7 years what would my monthly payment be
63. ### math

State a trigonometric ratio that is equivalent to each of the following trigonometric ratios Sin 3pie/10 Cos 6pie/7
64. ### Physics

A hydraulic lift is used to jack a 780 kg car 15 cm off the floor. The diameter of the output piston is 15 cm, and the input force is 160 N. a)What is the area of the input piston (in m^2)? b)What is the work done in lifting the car 15 cm? c)If the input piston moves 13 cm in ...
65. ### Physics

Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 1.6000kg when weighed in air.
66. ### physics

A newspaper carrier on delivery route travels 200.-m South-West and 300.-m West. What is the direction of the displacement
67. ### physics

A newspaper carrier on delivery route travels 200.-m South-West and 300.-m West. What is the magnitude of the displacement?
68. ### accounting

Analyze and record, in the form of T Accounts, Mr. James' transactions: Jan 1: Amount invested in the business \$10,000 Jan 7: Bought equipment for \$500 Jan 9: Bought office furniture with \$2,000 cash Jan 10: Bought materials with \$2,000 cash Jan 17: Sold part of equipment...
69. ### Chemistry

convert 458166 atoms of H20 to moles
70. ### pre algebra

A woman who is 5feet 4 inches cast a shadow that is 6 feet tall. How long of a shadow would be cast by a man who is 6 feet 8 inches tall
71. ### Algerbra

George pays a flat amount for the first 200 minutes plus so much for each additional minute on his cellular phone each month. Last month it cost him \$33.78 for 244 minutes of use. The previous month it cost \$38.94 for 287 minutes of use. What are the flat rate and per minute ...
72. ### Math

Jared can paddle his canoe 1 mile upstream in 1 hour, but it takes only a half hour to paddle back the same distance. Find the speed of water. (Hint: d=rt and the rate or canoe speed, depending on which way he is going.)
73. ### Calc

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0<A<pi/2 Find: A= pi/4? B=??

75. ### Math

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0<A<pi/2 Find: A= pi/4? B=??
76. ### Math

Show how to make one addend a ten. Complete the new addition sentence. 38 + 25=? ---- + ---- =
77. ### algebra

2st squared -s squared. S=4 t=8
78. ### geometry

If the endpoints of the diameter of a circle are (3, 1) and (6, 5), find the length of the diameter.
79. ### Physics

Takeoff Speed= Range=(initial velocity^2 * Sin (2 theta))/g 11m = (V0^2*sin(36))/(9.8) V0= sqrt((11*9.8)/(sin36)) V0=13.54
80. ### o Chem

a sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer. b.if the same sample were run several days later with theconditions as nearly the ...
81. ### math

The function f(x) = ax^3-x^2+bx-24 has three factors. Two of these factors are x-2 and x+4. Determine the values of a and b, and then determine the other factor
82. ### math

An open topped box can be created by cutting congruent squares from each of the 4 corners of a piece of cardboard that has dimensions of 20cm by 30cm and folding up the sides. Determine the dimensions of the squares that must be cut to create a box with a volume of 1008cm^3
83. ### math

An open box is made from a rectangular piece of cardboard, with dimensions of 24 cm by 30 cm, by cutting congruent squares from each corner and folding up the sides. Determine the dimensions of the squares to be cut to create a box with a volume of 1040 cm ^3
84. ### world geography

economics status, social status.
85. ### world geography

What processes cause changes in settlement patterns?
86. ### world Geography

Culture, age, money.
87. ### world Geography

What social factors determine population trends and demographics of a region?
88. ### World Geography

What human and physical features influence the size and distribution of settlements?
89. ### World Geography

Work, distance, stores
90. ### World Geography

What economic factors determine population trends and demographics of a region?
91. ### World Geography

The economy if its bad..not able to survive there, social status.
92. ### World Geography

What processes cause changes in settlement patterns?
93. ### World Geography

Push factors are those that encourage a migrant to leave his place of residence. Includes cost of living, personal safety, environmental catastrophes or more minor issues suc as weather and climate. Pull factors are those that attract a migrant to a country, such as the ...
94. ### World Geography

How do push and full factors and physical geography affect immigration?
95. ### math

The volume of a rectangular box is (x^3+6x^2+11x+6) cm^3. The box is (x+3) cm long and (x+2) cm wide . How high is the box
96. ### math

Consider the function f(x)=x^3+4x^2+kx-4. The remainder from f(x)/(x+2) is twice the remainder from f(x) / (x-2). Determine the value of k
97. ### math

The function f(x)=ax^3-x^3+bx-24 has three factors. Two of these factors are x-2 and x+4. Determine the values of a and b , and then determine the other factor