Thursday
December 8, 2016

# Posts by Jay

Total # Posts: 1,589

Statistics
if a rifleman averages 8 hits out of 10 shots at a target, what is the probability that he will hit the target in 3 out of 4 shots
March 29, 2012

physics
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through the window during a ...
March 27, 2012

Algebra
Problem: \$6300 is invested, part of it at 12% and part of it at 9%. For a certain year, the total yield is \$660.00. How much was invested at each year?
March 24, 2012

algebra
Question #1 The price of 7 citrons and 10 fragrant wood apples is 88 units. The price of 10 citrons and 7 fragrant wood apples is 82 units. Find the price of a citron and the price of a wood apple. I used 17x=170?????? Question #2 \$6300 is invested, part of it at 12% and part ...
March 24, 2012

pre-algebra
3.5 yers
March 23, 2012

algebra
I do not understand this problem: Factor by grouping: 1-c+cy-y
March 22, 2012

physics
22.57 J
March 21, 2012

algebra
800 is 22% of what number
March 3, 2012

Health
Maintaining a healthy diet can protect you from? A. Alcohol abuse B. Drug abuse C. Sickle cell disease D. Some cancers
March 1, 2012

Human Service
when is it inappropriate to share a hunch? Why?
February 27, 2012

programming logic
The program will accept user input to store the student's first and last name . If the name is ZZZ, then the program will end. The program will accept: a text entry for the class number (e.g., CGS 1000, COP 1000, etc.) a numeric value for the class grade a value of ZZZ ...
February 20, 2012

algebra
Find A ∪ B. (Enter your answers as a comma-separated list.) A = {2, 4}, B = {0, 1, 2, 3, 4, 5}
February 16, 2012

science
heck yea
February 16, 2012

science
When girls get pregnant, how do they babies get defected?
February 16, 2012

algebra
Al has 76 nickels and dimes worth\$5.55. How many of each coins does Al have?
February 15, 2012

statistics
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in courts, in medicine, or ...
February 14, 2012

physics
A 1 500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 12 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)
February 9, 2012

statistics
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
February 1, 2012

ecology
In what environments would you expect obligate homeotherms to have the most significant advantages, and in what environments might facultative homeotherms have an edge?
January 29, 2012

Managerial Economics
The demand function for a cola-type soft drink in general is Q = 20-2P, where Q stands for quantity and P stands for price. At which price would a change in price and quantity result in approximately no change in total revenue? Why?
January 28, 2012

statistics
250 out of 500 students is going to give you 0.5. After that you will need to multiply that number by 360. your equation will look something like this: 0.5 x 360 = 180 your welcome! :)
January 28, 2012

physics
A cat that has a mass of 6 kg climbs to the top of a tree that is 20 m high. How much potential energy does the cat have at the top of the tree?
January 26, 2012

British literature
the answer is NOT B. he's basically confessing to murdering his wife and destroying her happiness when she didn't follow his orders. knowing that, it rules out everything else but......
January 24, 2012

physics
a .300 kg baseball is thrown at a speed of 6.5m/s. the batter hits the ball and it flies into the outfield at a speed of 19.2 m/s. How much work is done into hitting the baseball
January 22, 2012

geometry
the coordinate of p are (-2,5) and the coordinates of q are (6,1). a.what is the slope of pq? b.what is the equation? c.what are the coordinates of the mp of pq? d. what is the eqquation of the perpendicular bisector of pq?
January 19, 2012

Finance
A bond that has a \$1,000 par value (face value) and a contract interest rate of 11.9. The bonds have a current market value of \$1,120 and will mature in 10 years. The firm's marginal tax is 34%. What is the cost of capital from this bond debt?
January 15, 2012

physics
1----------2 - - - - - - - - - - 3-----------4 Sorry this is a horrible square but I couldn't copy the image. The A is on corner 1 and the two charges are on corners 3 and 4.
January 12, 2012

physics
Two tiny objects with equal charges of 59.0 µC are placed at two corners of a square with sides of 0.355 m, as shown. How far above and to the left of the corner of the square labeled A would you place a third small object with the same charge so that the electric field ...
January 12, 2012

preap physics
In joules
January 11, 2012

preap physics
A 15.4kg block is dragged over a rough horizontal surface by a constant force 191N acting at an angle of 25.3 degrees above the horizontal. The block is displaced 80.4m and the coefficient of kinetic friction is. 2 A) find the magnitude of the work done by the force of ...
January 11, 2012

Science
If blue eyes are dominant to green eyes, and two parents have a 50% chance of producing offspring with green eyes. What must the genotypes and phenotypes be for the parents of the offspring. Complete a punnett square to answer this question.
January 11, 2012

math
array of stickers using the product of3 times 15
January 9, 2012

finance
14–1. (Defining capital structure weights) Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for \$400 million. Since the primary asset of this business is real estate, Templeton’s management has determined that they will...
January 3, 2012

Beginner Chemistry!
5.460 x 10^4
December 19, 2011

Evaluate 4x for each value of x. write the answer in simplest form. x = 3/8
December 15, 2011

geometry
for kite ABCD, if RA=15, and BD= 16, find AD
December 14, 2011

Calculus
straight line has a distance of 1 mile
December 14, 2011

Calculus
Assuming the earth is a perfect sphere of raius 3950 miles, find (in inches) d. d, is the difference between the arc and a straight line.
December 14, 2011

Physics
Two ropes are attached to a wagon, one horizontal to the west with a tension force of 30 N, and the other east and at an angle of 30° northward and a tension force of 40 N. Find the components of the net force on the cart. Show all your work.
December 10, 2011

Physics
An airplane wing is designed so that the speed of the air across the top of the wing is 274 m/s when the speed of the air below the wing is 193 m/s. The density of the air is 1.29 kg/m3. What is the lifting force on a wing of area 25.0 m2? ...
December 8, 2011

Chemistry
What is the molarity of OH- in a 7.83×10-3 M NaClO solution that hydrolyzes according to the equation. ClO-(aq) + H2O(l) = OH-(aq) + HClO(aq) The information they give is that constants Kh=2.86E-7 I know how to solve the problem when the constant Kw is involved (1E-14) i...
December 5, 2011

trig
We are doing trig identities in school. I need help with these five: 1.1+sinx/1-sinx=cscx+1/cscx-1 2.tanx+sinx/1+cosx=tanx 3.sec^2x/sin^2x=1/sin^2x+1/cos^2x 4.tan^2x/1+tan^2x=1-cos^2x 5.sinx-sin^3x/cos^3x=tanx
December 4, 2011

Math
Also, do i have to use numbers like 5.99 and 6.01 to find the rate of change @ t = 6s
December 3, 2011

Math
Do i have to make a tangent line?
December 3, 2011

Math
How do i figure out the instantaneous rate of change with given graph and it says find the rate at t = 6 s
December 3, 2011

Math
Thanks~ I understand #2 now. If I have more questions, do I post them here or post a new question?
December 3, 2011

Math
is it \$49 or 4900? you said R(6) = -36 + 72 + 13 = 49
December 2, 2011

Math
Can someone help me with these questions? 1.What are the maximum and minimum values for Y=28(1.21)^x on the interval 0<x<12? a) 275.8 and 0 b) 275.8 and 28 c) 249.7 and 28 d) 188.4 and 28 2. For what value of x does the maximum or minimum of f(x)= x^2 +8x + 12 occur? Is ...
December 2, 2011

Oh wow thanks~
December 1, 2011

somebody? :|
December 1, 2011

how did you get h^2/2?
December 1, 2011

= 0.5(-6+h)^2 + 6(-6+h)+ 7.5 - (-10.5)/h *
December 1, 2011

For each function, the point given is the maximum or minimum. Use the difference quotient to verify that the slope of the tangent at this point is zero. a) f(x) = 0.5x^2 + 6x + 7.5; (-6, -10.5) Difference quotient is f(a + h) - f(a)/h m= f(a+h) - f(a)/h = f(-6+h) - f(-6)/h = 0...
December 1, 2011

Statistics
True or False: If the value of the correlation, r, is zero then there is no association between the two quantative variables.
December 1, 2011

Statistics
In the July issue of Archives of Neurology, researchers reported studying the smoking habits of 12000 people (3000 with Parkinson's disease and 9000 healthy people). They found that those who had smoked the most (the equivalent of a pack a day for 60 years) had the lowest ...
December 1, 2011

Statistics
The weights of trout in a certain river follow a normal distribution with mean 3 pounds and standard deviation 0.8 pounds. What proportion of trout weigh between 3.2 pounds and 4.8 pounds? a.) .3891 b.) .9972 c.) .9452 d.) .5865
December 1, 2011

math
I still need a answer plz!!!
November 30, 2011

math
sorry about that the fraction is negative
November 30, 2011

math
how do you do one third (h) is less than or equal to 7? do you need to reciprocate the fraction?
November 30, 2011

Math
Could someone answer this question so I understand it. The answer is 28.0, but i'd like to know how to do it. Thanks Randomly selected cars were weighed, and the highway fuel consumption amounts (in miles/gal) were determined. For 20 cars, the linear correlation ...
November 30, 2011

Statistics
I have the answer to this question,, but i'd like to know how to do it. I need help finding z. Any help would be great. Thanks. Children and McDonaldfs In a Sports Illustrated for Kids survey of 603 children, 43% preferred McDonaldfs for fast food. The next ...
November 28, 2011

Geometry
The piolet of a single-engine airplane flies at a constant speed of 200 km/h at a bearing of N 25 degree E. There is a 40 km/h crosswind blowing southeast (S 45 degress E). What are the plane's actual speed and direction? Round the speed to the nearest tenth and the ...
November 28, 2011

Geometry
thank you soo much :)
November 28, 2011

Geometry
To reach a campsite, a hiker first walks for 2 mi at a bearing N 40 degree E. Then He walks 3 mi due east. What are the magnitude and direction of his hike from his stating point to the campsite? Round the distance to the nearest tenth of a mile and the direction to the ...
November 28, 2011

human resources
A job description is like a deed of property ownership and describes what the job includes and what must be done to adequately perform the job. In some ways these job descriptions limit management's rights or opportunities to change job requirements at will and as such ...
November 27, 2011

computers
Suppose the information portion of packet (D in figure 5.4) contains 10 bytes consisting of the 8-bit unsigned binary ASCII representation of string “Link Layer.” Compute the internet checksum for this data. Can someone explain to me how is this done? Info in D is: ...
November 26, 2011

Thanks and no, it doesn't state whether or not its a parabola, etc. f(3) = 5? isn't x=3 and y=5? also, how is f(-x+1) = 1 :S did you factor out the negative?
November 24, 2011

(3,5) is a point on the graph of y = f(x). Find the corresponding point on the graph of each of the following relations a) y=3f(-x + 1) + 2 what do I do with the negative sign before the x (-x)?
November 24, 2011

econ
2. Suppose that firms in an industry have the following cost function: C = 100 + 0.25q2, and the industry faces an inverse demand curve of P = 90 – 2Q. a. I f the industry is competitive, find the long-run equilibrium price, quantity, and profit of a typical firm. How ...
November 18, 2011

econ
12. A monopolist faces a constant marginal cost of \$1 per unit. If at the price he is charging, the price elasticity of demand for the monopolist’s output is –0.5, then
November 18, 2011

geometry
The width of a rectangle is 6 cm less than its length. If the area of the rectangle is 135 square cm, find the dimensions. Then find the perimeter of the rectangle.
November 15, 2011

world history
cambodia is the answer right ?
November 15, 2011

math
1/2 of students walk to school. 1/3 of students take the bus. What is the remainder? Put in order from from greatest to least.
November 15, 2011

geometry
a rectangle measures 30 feet by 20 feet and has a post at each corner and a post every 2ft. How many posts in all?
November 15, 2011

Math
Input x 2 output y=17, input x 4 output y=28, input x 6 output y=42, what is the rule for the table?
November 15, 2011

Chemistry
draw the alkyne formed when 3,4-dichloroheptane is treated with an excess of a strong base such as sodium amide. I got CH3CH3C(triple bond)CCH2CH3 but was told it was the wrong answer
November 9, 2011

Chemistry
CH3CH2CH(BR)CH=C(BONDED TO A METHYL ON ONE SIDE AND AN ETHYL ON THE OTHER)
November 9, 2011

Chemistry
Thanks Paige! :D
November 9, 2011

calculus
fourth degree polynomial p(x) whose graph is symmetric about the y-axis, and which has a y-intercept of 10, and global maxima at (1,13) and (-1, 13).
November 7, 2011

Algebra 2
log^10000x=
November 5, 2011

Algebra 2
y=ln(x-10)
November 5, 2011

Organic Chemistry
What is the name of this alkene CH3-CH2-CH-CH=C-CH3 | | BR CH2CH3
November 5, 2011

Organic chemistry
draw the alkyne formed when 3,4-dichloroheptane is treated with an excess of a strong base such as sodium amide. I got CH3CH3C(triple bond)CCH2CH3 but was told it was the wrong answer.
November 5, 2011

Organic Chem
How would I assign priority to 1,2-dimethylcyclopropane?
November 1, 2011

precal
A pole 12 meters tall is perpendicular to level ground. A taut wire that is 20 meters long extends from the top of the pole to the ground. What is the angle of elevation, to the nearest degree, from the bottom of the wire to the top of the pole?
October 27, 2011

Economics
3.3 Trillion
October 26, 2011

science
Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and I HAVE to do ...
October 23, 2011

science
Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and I HAVE to do ...
October 23, 2011

found of tech
Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and I HAVE to do ...
October 23, 2011

Algebra 2
The surface area S (in square centimeters) of a large dog can be approximated by the model S = 11.2m^2/3 where m is the mass (in grams) of the dog. A Labrador retriever’s mass is about three times the mass of a Scottish terrier. Is its surface area also three times that ...
October 23, 2011

Algebra 2
As a rule of thumb, the power P (in horsepower) that a ship needs can be modeled by P = d^2/3 • s^3 / c where d is the ship’s displacement (in tons), s is the normal speed (in knots), and c is the Admiralty coefficient. If a ship displaces 30,090 tons, has a normal ...
October 23, 2011

Mathematics
There is a two-digit number such that the sum of its digit is 6 while the product of the digits is 1/3 of the original number. Find this number. Explain your solution
October 23, 2011

chemistry
aspirin tablets contain about 5 grains of aspirin. About 10 grams of aspirin constitute a fatal dose. How many tablets would this be? (There are approximately 15 grains in a gram)
October 22, 2011

nutrition and wellness
Write a 300-500 word essay. Provide Three examples of sporting events, or fitness activities, with which you have been involved. Describe what energy pathway was used in that sport or activity and explain why you are matching the pathway with the activity. Try to give an ...
October 20, 2011

Algebra 2
I have a rectangular prism and I need to know the dimensions of it and the x values of it from the given information. x(15-x) by x(12-x).
October 18, 2011

algerbra 2
x^5*x^3 simplify the expression
October 17, 2011

algerbra 2
x^5*x^3 simplify the expression
October 17, 2011

algerba 2
x=4y-1 solve the equation for y show steps
October 17, 2011

algebra2
x+1/2y=5 solve the equation for y show steps
October 17, 2011

algerba 2
3x-2y=12 solve the equation for y
October 17, 2011

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