Thursday
July 31, 2014

Posts by karen


Total # Posts: 791

Algebra II Part 2
Verify the identity cot{0-pi/2=-tan 0

Algebra II Part 2
Use an angle sum identity to verify the identity cos 2 0=2 cos 0-1

Algebra II Part 2
Use a graphing calculator to solve the equation -3 cos t=1 in the interval from 0 to 2 p.Round your answer to the nearest hundredth

Algebra II Part 2
The equation h=7 cos{pi/3 t} models the height h in centimetres after t seconds of a weight attached to the end of a spring that has been stretched and then released. Find the times at which the weight is at a height of 1 cm,of 3 cm,and of 5 cm below the rest position for the ...

science-physics
A worker sits at one end of a 183-N uniform rod that is 2.80 m long. A weight of 107 N is placed at the other end of the rod. The rod is balanced when the pivot is 0.670 m from the worker. Calculate the weight of the worker

Chemistry pH
What is the pH of a solution that is .60 M H2SO4 (Sulfuric acid) and 1.7 M HCOOH (formic acid).

Calculus 1
Find the antiderivative of f(x)=5e^x-2secxtanx showing steps please

Calculus
The current circulation of a particular magazine is 3,000 copies per week. The editor projects a growth rate of g(t) = 4 + 5t^2/3 copies per week after t weeks. a. Find the circulation function based on this projection. b. Find the circulation in 2 years.

Chemistry
What is the amount of work produced when 1.0 g of H2O (l) is boiled at atmospheric pressure? Assume the liquid has no volume.

Social Studies
who was the american commander responsible for catching the philippines

Geometry Part 2
At a track meet,50 people ran the 100- meter dash.2 people finished in 11 seconds,5 people finished in 12 seconds,8 people finished in 13 seconds,10 people finished in 14 seconds,21 people finished in 15 seconds,2 people finished in 16 seconds,and 2 people finished in 17 secon...

Geometry Part 2
Janine made a cylindrical vase in which the sum of the lateral area and area of one base was about 3000 square centimetres.The vase had a height of 50 centimetres .Find the radius of the vase.Explain your method you would use to find the radius .

Geometry Part 2
State whether the transformation of a Preimage and Image circles appears to be a rigid motion?Explain

Geometry Part 2
A forest ranger spots a fire from a 28- foot tower.The angle of depression from the tower to the fire is 11.To the nearest foot,how far is the fire from the base of the tower?Show the steps you use to find the solution.

Geometry Part 2
A highway makes an angle of 6 with the horizontal.This angle is maintained for a horizontal distance of 5 miles.To the nearest hundredth of a mile, how high does the highway rise in this 5- mile section?Show the steps you use to find the distance.

Geometry Part 2
A triangle has side lengths 10,15,and 7.Is the triangle acute,obtuse,or right?Explain.

science
you run 100m in 25's. if you later run the same distance in less time , does your average speed increase or decrease? explain.

Chemistry
Calculate volume of 6MHCL required to prepare a 250 ml of a 0.15MHCL solution??

Chemistry
Calculate volume of 6MHCL required to prepare a 250 ml of a 0.15MHCL solution??

Chemistry
Calculate the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2.

Chemistry
Calculate the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2.

Math
Haha thanks and cause i forgot to multiply -3x+2 by 5

Math
Thanks for the help and reiny no thats not the denominator its 2x/5 - 3x+2 greater than or equal to x-1

Math
2x/5 - 3x +2 >= ( greater than or equal) x-1 My answer was x is less than or equal to 7.5 but im not sure

computer science
You are required to use the Account class to simulate an ATM machine. Create ten accounts in an array with id 0, 1, 2 ...9, and initial balance $50. The system prompts the user to enter an id. If the id is entered incorrectly, ask the user to enter a correct id. Once an id is ...

calculus
The rate of change of an investment account earning continuous compound interest is given by dA/dt=kA where k is a positive constant. The initial account value was $2500. At the end of the third year, the account value was $4200. Find the particular solution to the differentia...

Spanish
Que te gusta hacer? My choices are (A).A mi tambien (B).No,no me gusta. (C).No,me gusta Tampico. (D).Me gusta montar en monopatin

Algebra 1Part2
Divide 3n^2-n/n^2-1/n^2/n+1

Algebra 1 Part 2
Divide 3n^2-n/n^2-1/n^2/n+1

Algebra 1Part2
Divide 3n^2-n/n^2-1/n^2/n+1

Algebra 1 Part2
Simplify the radical expressions: (1).sqrt75+sqrt3 (2).sqrt7(sqrt14+sqrt3)

Algebra 1 Part 2
Can you please show me how to write this because I don't follow what your saying

Algebra 1 Part 2
Simplify the radical expressions: (1).sqrt75+sqrt3. (2).sqrt7(sqrt14+sqrt3

Algebra 1 Part 2
Simplify the rational expressions.State any excluded values:(1).3x-6/x-2 (2).x-2/x^2+3x-10

Algebra 1Part 2
Divide 3n^2-n/n^2-1/n^2/n+1

Algebra 1Part 2
Can't re-enter because that's how it 's written.

Algebra 1Part 2
Divide 3n^2-n/n^2-1/n^2/n+1

Algebra 1 Part 2
What are the minimum,first quartile,median,third Quartile,and maximum of the data set?5 55,62,61,54,68,72,59,61,70.

Algebra 1,Part 2
Would the mean be 62.44 and the range be -18

Algebra 1,Part 2
As cars passed a checkpoint ,the following speeds were clocked and recorded. Speed (mph):55,62,61,54,68,72,59,61,70) Find the mean and the range of the data set .

Algebra/Math
What is the factor (x to the third power + 4x to the second power)(2x+8)?

math
The period of a pendulum can be found by using the formula,where L is length of the pendulum in feet and P is the period in seconds.Find the period of a 15-foot pendulum. Round your answer to the nearest hundreth of a second.

algebra 1
What is the prime factorization of 20?

math
What is the prime factorization of 20?

HCA 220
WHY ARE THE FIVE SKILLS OF MEDICAL COMMUNICATION IMPORTANT FOR HEALTH CARE ADMINISTRATION? WHAT TECHNIQUES WILL YOU USE TO LEARN THESE NEEDED SKILLS AND MEDICAL TERMS IN THIS COURSE?

Statistics
A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if he or she wears glasses. Decide whether you can use the normal distribution to approximate the binomial distribution. If so, find the mean and stand...

Statistics
An airline reports that if has been experiencing a 15% rate of no-shows on advanced reservations. Among 150 advanced reservations, find the probability that there will be fewer than 20 no-shows.

English
Its D

statistics
if a sample of a distribution of sample size 26 has a range of 56, then what would be an estimate of the sample standard deviation

math
if you have 2 dice and you throw them once,what possible combinations of numbers can you get ? Is it 2^6=12 thanks

math
peter has a bag of 7 mixed lollies.he allows everyone in his class to choose 3 lollies,but they must not choose more than one of each kind.How many different combinaions of lollies are possible ? Is it 7^3=21 thanks

math
sarah has a bag of mixed lollies.T?he bag contains toffees,mints,fruit drops,smarties,jelly beans,candies and licorice.She allows everyone in her class to choose 3 lollies,but they must not choose more than one of each kind.How many different combinations of lollies are possib...

math
Peter wants to wear a 3 piece outfit .In the wardrobe he has a white shirt and a blue shirt,a pair of brown trousers,a pair of black trousers and some blue jeans.He has a cashmere coat and a windcheater.How many different 3 piece outfits can he wear? Is it 3^2^3^2 =36

math
what kind of book can help me understand about propabilities,please let me know,i am not lazy,but i am really not understand,many thanks

math
thanks,so what is the formula for the sum of 1st even number ?

math
Anny is having a party .The first guest arrived by himself.3 guests then arrive together,each successive group arrives with 2 more guests than the group that entered previously.How many guests will have arrived when the twentieth group enters the room ?

AMERICAN GOVERMENT Would someone PLEASE check ans
1. The source of the Supreme Court’s authority is (D) moral suasion. judicial activism. concurring opinion. dissent. 2. When the Supreme Court hands down a decision, it is (A) often a mixed decision with majority, dissenting, and even concurring opinions. always a unanimo...

math
thanks for your kindness

math
a 3 cm by 3 cm by 3 cm cube is painted all over its outside and is then cut into 27 smaller cubes. How many of these small cubes have paint on more than one face? please explain how you work it out,thanks

math
thanks for your kindness

math
a diagonal of a polygon is a straight line joining any 2 non-adjacent corners.a decagon has 10 corners. .how many diagonals does it have ?

math
we design a new flag.they are 5 colors,blue,red,green,orange and yellow.the flag must have 3 bands of color,how many different flags can be design ?

math
a bank teller has 54 in $5 and $20 bill s. the total value is $780. how many 5 dollars are there

PLEASE CHECK THESE ANSWERS AMERICAN GOV
1. The nerve center of the American Presidency is (C) the President’s Cabinet. the Executive Office of the President. the Congressional houses. the Civil Service. 2. Presidential elections include all of the following except (D) participatory caucuses. primary elections. ...

Literature
I am desperate for help with this assignment...a short chapter by chapter analysis of the book The Secret Life of Bees by Sue Monk Kidd.I need to summarize the plot of each chapter, include what I found out about the characters in each chapter, list any elements of each chapte...

Math
In my math textbook it says it is a base. Base- When a number is raised to a power, the number that is used as a factor is the base.

Algebra
A rectangular garden is fenced on three sides with wall forming the fourth side. The total length of the fence is 120m. The ares of the garden is 1600 m(squared). Find the dimensions of the garden.

Algebra
The sum of the squares of the largest and smallest of three consecutive odd integers is 353 less than 3 times the square of the middle one. Find the integers.

Physics
Thank you! :)

Physics
A boat crosses a river of width 113 m in which the current has a uniform speed of 0.933 m/s. The pilot maintains a bearing (i.e., the direction in which the boat points) perpendicular to the river and a throttle setting to give a constant speed of 2.58 m/s relative to the wate...

NATIONAL Goverment
Ok.

NATIONAL Goverment
SOMEONE PLEASE HELP!!!! PLEASE HELP ME!!! A federal system differs from a unitary system in that: ANSWER: (A) power is concentrated in one central government. sub-governments delegate power to the central authority . power is distributed between the central government and othe...

accounting
Can uot help me with journal entries

Math
Kayla earns a weekly salary of $290 plus a 5.5% commission on sales at a gift shop. How much would she make in a week if she sold $5799 worth of merchandise. How do I set up this problem?

math
1. Corey needs 24 boards that are 47.5 inches How many feet of board should he buy and then explain. 2. If you can only buy 8 foot boards, how many should he buy? and then explain.

Statistics
What is the P(H,H,T,T) on four flips of a coin?

math
income 1000 2000 3000 taxes 200 350 450 what percentage of income is paid in taxes at each level?

History
The chapter we are on is based in the medieval times.

History
What changes in England were steps toward representative government?

AMERICAN GOVERMENT
Thanks for you input Ms.Sue but my answers were correct with the exception of (impeachment can be characterized as a) which was shared function between the House of Representative and the Senate. I can't believe you would trying stir me wrong... I trust and believe that th...

AMERICAN GOVERMENT
Please help The weaknesses of the Articles of Confederation were dramatized by all of the following except My ANSWER is (D) (A) the Newburgh Conspiracy. (B) Shays’ Rebellion. (C) the absence of a centralized authority. (D) the absence of a single currency. Impeachment can...

Pol 201 American National Goverment
Thanks Damon though you are not an History or Government teacher you still helped and the suggested answer you gave was correct also THANKS again Damon.

Pol 201 American National Goverment
In creating a new government, the Framers sought to MY answer is (A) (A) duplicate the best of English tradition and institutions. (B) scrap everything British. (C) create a democratic government. (D) reaffirm their commitment to a monarchy.

Pol 201 American National Goverment
Please help The weaknesses of the Articles of Confederation were dramatized by all of the following except My ANSWER is (D) (A) the Newburgh Conspiracy. (B) Shays’ Rebellion. (C) the absence of a centralized authority. (D) the absence of a single currency. Impeachment can...

Trigonometry
The value V, of a $100,000 investment that earns 3% annual interest is given by V=f(t) where t is in years. How much is the investment worth in 3 years

Statistics
Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it representa this level: heights of 40 high school students.

Math
Thank you :) I've got it now.

Math
The price of a jacket at store A is $48. If the price at store B is 5.5% higher, what is the price difference? What is the cost of the jacket at store B? How would I set up this problem?

Home, School and community
When implementing a Parent Education Program, teachers act primarily as___, while families define their needs. A. experts B. interventionists C. educators D. resources

Algebra Homework- Scientific Notation
Thank you!

Algebra Homework- Scientific Notation
How would you write 768,390 as a decimal? Would it be 7.6839 or something else?

Algebra Homework
Thank you!

Algebra Homework
On my homework it says to write 324 in scientific notation. For my answer I got 3.24 x 10^2 Would this be correct?

accounting
using the following information, calculate inventory turnover ratio, the average days in inventory, and the gross profit ratio for Howard Company for the year ended december 31, 2011( round to two decimal places) sales $225,00 Cost of goods $175,000 Ending inventory, December ...

Math
Please find zĄ/2 when Ą=0.14.

Math
7. Most powerful business women in America. Consider that the data set is a normal distribution with a mean of 50 years and a standard deviation of 5 years. A powerful woman is randomly selected from the data, and her age is observed. Please calculate the probability of the wo...

Statistics
7. Most powerful business women in America. Consider that the data set is a normal distribution with a mean of 50 years and a standard deviation of 5 years. A powerful woman is randomly selected from the data, and her age is observed. Please calculate the probability of the wo...

current physics
3 kilo ohms ll 5 kilo ohms = 1.875 kilo ohms

pre calculus
A airplane is 145 miles North and 85 miles west of an airport. What is the compass direction from the airport to the airplane?

math
What is the surface area of a cube with a volume of 81cm3?

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