Saturday
December 20, 2014

Posts by tony


Total # Posts: 821

Trigonometry
Let O be the origin and P be a point in the fourth quadrant on the x-y plane. Let 270<z<360 be the angle formed by OP with the positive x-axis. Similarly Q is a point in the fourth quadrant on the x-y plane where |OQ|=|OP| and the angle formed by OQ and the x-axis is 7z...
April 19, 2013

Algebra
Let S be the sum of all values of r such that the coefficient of the x^2 term in the expansion of (x−3)(rx+2)^3 is −6 . If S=a/b, where a and b are coprime positive integers, what is the value of a+b
April 19, 2013

P&P
Peter is walking from the library to school at a rate of 40 meters per minute. At the same time, Paul is walking from school to the library. After they meet each other, Peter still needs 6 minutes to get to school, while Paul is 200 meters away from the library. What is the ...
April 19, 2013

Ratios
If the ratio of x+y to x−y is 279/262 , then the ratio of y to x can be written as a/b where a and b are coprime positive integers. Find a+b
April 19, 2013

Numbers
What is the smallest possible natural number x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77
April 19, 2013

Maths
There are two complex roots to the quadratic equation z^2 +(1−16i)z+(−80+10i)=0 . What is the value of the larger of the two norms of the two roots?
April 19, 2013

Math
Find the sum of all primes q<1000 such that for some prime p<q , both q divides p^3 -1 and p divides q^3 -1
April 19, 2013

Calculus
p'(53) = (-.009)(20.6)e^(-.009(53)) = -.1854e^((-.477) = -.1854 * .62064 = -.115067 = -.115067 * 100 = -11.5067 % change in relocation rate
April 9, 2013

physics
A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
April 8, 2013

physics
A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
April 8, 2013

Please help science
Most organisms reproduce: Sexually Asexually By meiosis Is it asexually or sexually not sure I think it is asexually though
April 8, 2013

Science
Most organisms reproduce: A. Sexual B. asexual C. By meiosis Is it b not sure between b and a
April 8, 2013

Science
Most microrganisms reproduce: A. Sexually B. asexually C. By meiosis A or B not sure
April 8, 2013

Math
A study determines that 60% of the voters in a town intend to vote for the incumbent mayor. If a sample of 8 people is selected, using the binomial formula, what is the approximate probability that 6 of the 8 people surveyed intend to vote for the incumbent? A. 0.47 B. 1.28 C...
April 6, 2013

maths
perpendicular avenue is perpendicular to tangent street and passes through D(17,8).find its equation
March 29, 2013

English
The a in the word saving sounds like A. Ape B. pat C. Heated D. Naughty Is it a
March 26, 2013

statistics
I did not change names I have two children in college and they had different questions ask before you blame
March 17, 2013

statistics
The average age of a vehicle registered in the United States is 8 years, or 96 months. Assume the standard deviation is 16 months. If a random sample of a group of 48 vehicles is selected find the probability that the mean of the group’s age is between 90 and 100 months.
March 17, 2013

statistics
The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50?
March 17, 2013

Program Logic Design
The Chocolate Delights Candy Company needs to add the following functionality to its cash register: When a customer is checking out, the cash register needs to store the required data pertaining to each item the customer is buying. This data includes the item name, the price ...
March 13, 2013

Quantum Physics
Alice and Bob share a state a| + +> + b |- -> , where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants his qubit to end up in the state a |0> + b |1&...
March 12, 2013

Calculus
Evaluate  [double intergal (R xy dA)] , where R is the region bounded by x^2 +y^2 <=16 , x>=0 and y>=0
March 12, 2013

Integrals
Evaluate è R xy dA , where R is the region bounded by x^2 +y^2 <=16 , x>=0 and y>=0
March 12, 2013

Geometry
ABC is a triangle with area equal to 20 . The incircle of triangle ABC has radius equal to 2 and the circumcircle of triangle ABC has radius equal to 6 . If sinA+sinB+sinC=a/b , where a and b are coprime positive integers, what is the value of a+b ?
March 11, 2013

Geometry
ƒ¡ is a circle with center O . A and B are points on ƒ¡ such that the sector AOB has perimeter 40 . What is the measure of ÚAOB (in radians) when the area of the sector AOB is maximized
March 11, 2013

Trigonometry
Let è be the angle between the x-axis and the line connecting the origin O(0,0) and the point P(−3,−4) , where 180<è<270. Given that sinè+cosè+tanè=−a/b, where a and b are coprime positive integers. What is the value ...
March 11, 2013

MEchanics M-1 (Velovity time graphs)
A dragonfly, at rest on a bullrush, decides to fly to a second bullrush 18 m away. It accelerates uniformly to a speed of. 5 m s-1, then immediately decelerates uniformly to rest on the second bulrish. Howlong the journey took?
March 9, 2013

Physics
We use a wrench to turn nuts on bolts because they require less force. Consider a hexagonal nut 1 cm in diameter. We can tighten this nut with one of two wrenches, wrench A with lever arm 10 cm and wrench B with lever arm 20 cm. Both wrenches have a very small mass, so you may...
March 6, 2013

Trigonometry
Let S be the sum of all the possible values of sin x that satisfy the following equation: 5-2cos^2(x)-7sin(x) = 0 S can be written as a/b, where a and b are coprime positive integers. What is the value of a + b?
March 6, 2013

Calculus
The location of a dot P at a given time t in the x-y plane is given by (x,y) = (t - sin t, 1 - cos t). What is the distance traveled by P in the interval 0 <= t <= 2pi
March 6, 2013

algera 1A
I thought the formula i was suppose to use is y2-y1 x2-x1 which equals to (-15,- -11)and(-20,- -2) Then I got -4/-18 which equals to -2/-9
March 5, 2013

algera 1A
find the slope, if it exists,of the line containing the pair of the points. (-2,-11) and (-20,-15). I came up with (-2,-9)is this correct?
March 5, 2013

algebra 1A
correction the pair are (-2,-11) and (-20,-15).
March 5, 2013

algebra 1A
find the slope, if it exists,of the line containing the pair of the points. (-2,-1) and (-20,-15).
March 5, 2013

fractions
stupid and thanks you a******
February 26, 2013

Math
a+p =5 p 11/4 >a
February 24, 2013

Math
2k+7=5k-k
February 19, 2013

Math
2k+7=5k-k
February 19, 2013

Physics
In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's image on the ...
February 16, 2013

Help please edu.
Young children with autism: A. Will never talk B. relate to people differently than typical children do C. get along better with older children D. like changes in their routine I think B am I correct
February 14, 2013

Phsics
What is the terminal speed for an 77.0kg skier going down a 44.0 degrees snow-covered slope on wooden skis uk= 0.060? Assume that the skier is 1.70m tall and 0.300m wide.
February 14, 2013

Algebra 1- Math
The sum of a smaller number and twice a larger number is 67. If the smaller number is increased by 5, the sum will equal the larger number. Find the numbers. A rectangles width is four more than twice its length. Its perimeter is 62. Find the dimension of the rectangle?
February 6, 2013

Algebra 1- Math
how do u solve 3x=y-5
February 6, 2013

Algebra 1- Math
what has the same slope but different y-intercept?
February 6, 2013

Math
Now-Next minus a negative 2
February 5, 2013

Algebra 1- Math
Can anyone please show me and explain how to solve 9x+2=3y? Thanks,Bye.
February 5, 2013

Physics
6.7²/(2g) + 9.1 = 11.39 m b) t = 2√[2H/g] = 3.05 sec; X = 6.6*t = 20.125 m c) Vf = (6.6i - 6.7j) m/s d) Θ = arctan[j/i] = arctan[-6.7/6.6] = -45.43°
February 5, 2013

science
The Sun.
February 5, 2013

physics
acceleration = force / mass A = 500/ 2000 a = 0.25 m/s/s
February 5, 2013

physics
calculate the acceleration of a 2000-kg single air plane just before takeoff when the thrust of its engine is 500 N
February 5, 2013

physics
A compact car, mass 875 kg, moving south at 16 m/s, is struck by a full-sized car, mass 1660 kg, moving east at 12 m/s. The two cars stick together, and momentum is conserved in the collision. The wreck skids along the ground and comes to a stop. The coefficient of kinetic ...
February 4, 2013

chemistry
1.00 g zinc and 0.80 g sulfur are allowed to react all the zinc is used up 1.50 g of zinc sulfide is formed and some unreacted sulfur remains what is the mass of unreacted sulfur
February 3, 2013

Help please
Number the items to show the most effective and the least effective to use to scratch the mineral to test its hardness. Use number 1 for the most effective and the 4 for the least efective. Chalk(1) Fingernail(2) Steel screw(4) Paper clip(3) Am I correct????
January 28, 2013

Help please
According to the textbook,an individual's most. Important decision that will effect the climate is: a. The choice to unplug an extra freezer that is rarely used b. looking for the energy star on new appliances c. Selecting a fuel efficient automobile d. Planting a tree I ...
January 18, 2013

math
if jay eats 1/3 of jelly beans and jack 1/4 of the jelly bean leveing bill with 10 jelly bean how many were there to start with
January 18, 2013

Probability PLEASE CHECK
What is the probability of a game being sold if 18,980,000 of that title was sold out of a total 68320,000 different video games Is it 19,989,000/68320,000 1890/6832 = 27.77% rounded to nearest tenth
January 9, 2013

Math-truth table, please check my work!
p -> ~q , p -> q Are these Equivalent statements? This is my try. Please let me know if these truth tables are correct. p -> ~q p q p -> ~q p q p -> q T T T T T T T F T T F F F T F F T F F F T F F T The statements are not equivalent.
January 9, 2013

Math-Syllogism valid?
Some snakes are poisonous. A rattlesnake is a snake. Therefore: a rattlesnake is poisonous. Is syllogism valid or invalid?
January 8, 2013

math-Tiling a room
How much does it cost to tile a room that is 420 sqft if the tiles used are 1 foot on a side and cost $0.95?
January 8, 2013

statistics-expected value
100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is the expected value of her ticket? What is the fair value of a ticket?
January 8, 2013

math
100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is her expectation? What is the fair value of a ticket?
January 8, 2013

math
4y X 4y = 16y squared
January 8, 2013

math - expected value and fair price
one hundred raffle tickets are sold for $3 each. one prize of $200 is to be rewarded.Lisa purchases one ticket. a- what is her expected value b- what is the fair price for a ticket?
January 7, 2013

Statistic- Average
A mean average of 60 on 6 exams is needed to pass a course. on his first 5 exams, Adam received grades of 46,73,73,63 and 70. If the lowest grade of the exams already taken is to be dropped, what grade must he receive on his last exam to get a C in the Course?
January 7, 2013

solve for x with inequality
(387-46)+x/6=> or = to 70 (341)+x = or > than 70
January 7, 2013

algebra
(387-46)+x/6=> or = to 70
January 7, 2013

statistics
A license plate is to have 3 digits followed by 2 uppercase letters. What is the number of different license plates possible if repetition of numbers and letters is not permitted?
January 7, 2013

statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
January 7, 2013

statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
January 7, 2013

math
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
January 7, 2013

math
how many different committees can be formed from 6 teachers and 31 students if the committee consists of 4 teachers and 4 students?
January 7, 2013

English I Speech
Can anyone tell me 3 reasons why fracking is either good or bad and 3 supporting details? Please, thank you It's urgent
December 24, 2012

English I Speech
Can anyone please share their idea of a strong, powerful hook, background information and thesis about fracking? Please this urgent. Be quick like your life depends on it.
December 24, 2012

Algebra 1- Math
At the ocean's surface the pressure is 1 atmosphere. At 66 feet below seal level, the pressure is 3 atmosphere. The Relationship between the pressure and the depth is linear. a. find the independent and dependent variable. b. create 2 ordered pairs. c. find the slope. d. ...
December 14, 2012

Algebra 1- Math
A software company started with 2 employees. In 6 months, the company had 14 employees. The number of employees increased at a steady rate. a. create 2 ordered pairs. b. find the slope. c. Interpret the meaning of the slope. d. Find the prediction equation.
December 14, 2012

wireless communications
what is the period of the space shuttle traveling at 250km above the earth and what is its velocity
December 2, 2012

Fractions
Solve by drawing a diagram. A Tour bus travels 7 1/2 mi south, 3 1/2 east, 4 1/3 mi north, and 11 1/2 mi west. How far has the tour bus traveled when it crosses its own path?
November 14, 2012

geography
thank you for your help:)
November 8, 2012

geography
the list i gave you
November 8, 2012

geography
i need to know what influences they had
November 8, 2012

geography
i need to know the influences they had
November 8, 2012

geography
Central asia Complete the following: Describe what influence the former invaders of this region brought into the regions culture. a. Turkic b. Arabs c. Mongols under Genghis Khan D. Mongols under Timur e. Russians f. Soviet
November 8, 2012

geography
in Centrel Asia why are temperatures in this region often really cool at night, but sweitering hot during the days?
November 8, 2012

science
Calculate the heat of combustion of this wax in kJ/mol. How much energy is produced per carbon? What is the limiting reagent? I have the Q=m*C*deltaT equation to be 10460.45 joules using 100.1 grams C25H52, 25 degrees C, and 4.18 J/gC. I don't know how to find how much ...
November 7, 2012

Math,Statistics
Johnny suffers from Flu an average of 5 times per week. However, Tony claims that Johnny rarely suffers from fewer than 15 bouts flu per week. If Johnny has been suffering from flu for 180 weeks, at a minimum, how many of those weeks has he suffered from fewer ...
November 3, 2012

Computers
The answer is one that you must learn for yourself my friend...
October 24, 2012

Information Technology
The answer is one that you must learn for yourself my friend...
October 23, 2012

Math
The answer is one that you must learn for yourself my friend...
October 23, 2012

Chemistry
Dont worry bro i feel you the answer is 455C.
October 23, 2012

language
The answer is one that you must learn for yourself my friend...
October 22, 2012

social study help plz
The answer is one that you must learn for yourself my friend...
October 22, 2012

soicial studys help plz
The answer is one that you must learn for yourself my friend...
October 22, 2012

Math/Management
The answer is one that you must learn for yourself my friend...
October 17, 2012

physics
A dog runs 150{\rm m} away from its master in a straight line in 8.4{\rm s} , and then runs halfway back in one-third the time.Calculate its average speed,average velocity?
October 7, 2012

Math
5.5 in long and 3.2 in wide must enlarge so that both dimensions are 1.8 times greater
September 18, 2012

physics
On Planet Y, the value of g is 12 m/s/s. If the human weighs 685 N on this planet, then how much woud he weigh on earth?
September 12, 2012

Algebra
14
September 9, 2012

Math
If john must have a mark of 80% to past a test of 35 items, the number of items he may miss and still pass the test is
September 2, 2012

Physics
The leader of a bicycle race is traveling with a constant velocity of +11.9 m/s and is 10.7 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.10 m/s and an acceleration of +1.20 m/s2. How much time elapses before he catches the leader?
August 27, 2012

Math
The grocery store sells kumquats for $4.25 a pound and Asian pears for $2.25 a pound. Write an equation in standard form for the weights of kumquats k and Asian pears p that a customer could buy with $18.
August 3, 2012

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