Posts by MELISSA
Total # Posts: 1,343

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. 
CHECK ANSWERS AND HELP PLEASE
MATHSTAT 
CHECK ANSWERS AND HELP PLEASE
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) =?????? 
English (Check Please)
. With what kind of life are the images in the second stanza of “Beat! Beat! Drums!” are usually linked? 
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? 
Physics
Light with a wavelength of 500 nm (5. 107 m) is incident upon a double slit with a separation of 0.28 mm (2.80 104 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... 
Physics
Light with a wavelength of 500 nm (5. 107 m) is incident upon a double slit with a separation of 0.44 mm (4.40 104 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? ... 
health
BMI is used to screen for______? 
weight
researchers found that a ____ is more important and is the key to losing weight rather than a popular one. 
health
for adults which ranges reflect an accurate BMI category 
weight
why is having abdominal fat a serious concern 
health
in order to loose weight you have to ___ 
health
national weight control registry 
health
Why are fad diets considered unhealthy? 
weight
Obesity can cause a person to develop what type of conditions? 
weight
If you decided to lose weight then ____ help? 
Bio Help Please!!!
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 (+)? 
Bio Help Please
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 (+)? 
math
y=2x1 how to set up to find what x is, this needs to graph as a linea equation. 
Physics
A test charge of +3.00 106 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? 
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: ... 
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) 
Math
Steve, That still isn't the correct answer :( 
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) 
Microbiology
if the original concentration of phage was markedly increased from the concentration that you received, how could you ensure that you had between 30300 plaques on your plate? (instead of TNTC) 
Statistic HELPPPPPP
A linear model can be used to describe the relationship between fuel economy(mpg) and horsepower (hp) for certain automobile models. mpg=46.8680.0838 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... 
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? 
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 5year period 
Diff eq
y'(x)=sqrt2y(x)+7, y(4)=1 Solve the seperable diff eq 
Stat Help Please
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. 
Stat Help Please
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. 
history
Who came to power in China, instituting a Communist regime that would bring great suffering to the nation's people 
Math
I don't get this question at all.Can you help me? 
Global History
How were the Mongols able to conquer so much territory so rapidly? 
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? 
math
a wheel makes 8 1/10 revolutions per minute if it rotates for 85 mins. how many revolutions will it make 
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. 
general chemistry
so to get volume, you do v=(1.33)*3.14*99e7^3???? 
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 
chemistry
inorganic chemistry 
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? 
Sociology HELPPPP
How does deviance and crime function both for and against society? Be sure to include social control in your answer group. 
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 
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 xaxis represents due east and the positive yaxis represents due north. 
american government
judicial review is the power of the american courts to: 
algebra
Determine which of the flowing points lie on the line given by the equation 3x+6y=12 
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 +... 
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? 
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 38mmHg ? B.At what height h should the bottle be placed so the liquid pressure is 460mmH_2O ? C.If the blood pressure is 18 {mmHg} above atmospheric ... 
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? 
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! 
Biology
The halflife of Carbon14 is 5730 years. What is the age of a fossil containing 1/16 the amount of Carbon14 of living organisms? Explain your calculation. 
Physics
a child twirls a yoyo about in a horizontal circle. The yoyo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yoyo? thanks! 
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? 
Physics
SOrry! the units are 11500rmp 1.52 m*N 6.07kg 0.0750m 
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 ... 
Algerbra
Combine and show all work please 3/2y+2/y12/y 
Algerbra
simplify a1/a ___________ 2+3/2+1/a^2 
math
Use the tangent line approximation to approximate the value of ln(1.004) 
Chemistry
thanks! But it turns out I was over thinking it! 
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 ... 
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 
math
State a trigonometric ratio that is equivalent to each of the following trigonometric ratios Sin 3pie/10 Cos 6pie/7 
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 ... 
Physics
Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 1.6000kg when weighed in air. 
physics
A newspaper carrier on delivery route travels 200.m SouthWest and 300.m West. What is the direction of the displacement 
physics
A newspaper carrier on delivery route travels 200.m SouthWest and 300.m West. What is the magnitude of the displacement? 
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... 
Chemistry
convert 458166 atoms of H20 to moles 
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 
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 ... 
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.) 
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=?? 
English
About what? 
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=?? 
Math
Show how to make one addend a ten. Complete the new addition sentence. 38 + 25=?  +  = 
algebra
2st squared s squared. S=4 t=8 
geometry
If the endpoints of the diameter of a circle are (3, 1) and (6, 5), find the length of the diameter. 
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 
o Chem
a sample consisting of 1bromopropane and 1chloropropane 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 ... 
math
The function f(x) = ax^3x^2+bx24 has three factors. Two of these factors are x2 and x+4. Determine the values of a and b, and then determine the other factor 
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 
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 
world geography
economics status, social status. 
world geography
What processes cause changes in settlement patterns? 
world Geography
Culture, age, money. 
world Geography
What social factors determine population trends and demographics of a region? 
World Geography
What human and physical features influence the size and distribution of settlements? 
World Geography
Work, distance, stores 
World Geography
What economic factors determine population trends and demographics of a region? 
World Geography
The economy if its bad..not able to survive there, social status. 
World Geography
What processes cause changes in settlement patterns? 
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 ... 
World Geography
How do push and full factors and physical geography affect immigration? 
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 
math
Consider the function f(x)=x^3+4x^2+kx4. The remainder from f(x)/(x+2) is twice the remainder from f(x) / (x2). Determine the value of k 
math
The function f(x)=ax^3x^3+bx24 has three factors. Two of these factors are x2 and x+4. Determine the values of a and b , and then determine the other factor 
3rd Grade Math
title is class collection data week 1 
math
Factor each expression (X+5)^3(2x+1)^3 
math
Factor each expression (X+5)^3(2x+1)^3