# Posts by katy

Total # Posts: 448

**pre-calculus help:((((((((**

how do u find period, all angles and name 8 angles for these???????? 1)cosxcos2x+sinxsin2x=sqrt(2)/2 2)5cosxsinx+2cosx=0

*April 23, 2012*

**Chemistry Help**

Nope the question is exactly like this!!!

*April 6, 2012*

**Chemistry Help**

100 ml of 0.2 M ammonium sulfate are reacted with 300 ml of 0.1M cadmium chloride . a yellow precipitate is formed. what is the weight of the precipitate produced.

*April 6, 2012*

**Algebra**

Josh and Racquel sold cookies and brownies at the math club bake sale. The cookies cost $0.47 each, and the brownies cost $0.60 each. They sold a total of 603 items (cookies and brownies) and raised $323.84 Write a system of equations and determine the number of cookies sold ...

*March 25, 2012*

**Algebra**

A movie theater manager wants to know how many adults and how many children pay admission to a particular movie. The theater charges $10.00 for adult tickets and $5.00 for child tickets. At a showing where 210 tickets were sold the theater collected $1,355.00. Write a system ...

*March 25, 2012*

**Algebra**

Solve the system of equations by substitution. Your answer should be given as an ordered pair like this (x, y). Round your answers to the nearest tenth. y=-2+7x 10x-7y=209

*March 25, 2012*

**physics**

The relative humidity is 55% on a day when the temperature is 30.0°C. Using the graph below, determine the number of moles of water vapor per cubic meter of air

*March 4, 2012*

**Algebra 2**

What is each product or quotient in simplest form? a) √3(4√3) b)√x^3/3√x^2 c)√7(3√7)

*February 29, 2012*

**Math**

4x-3y=33 x=-4y-25 Please help me solve this system of equation and show your work thanks.

*February 27, 2012*

**Math**

4x-3y=33 x=-4y-25 Please help me solve this system of equation and show your work thanks.

*February 27, 2012*

**math**

How to solve a linear equation using the equality properties. Help explain in simple language

*February 21, 2012*

**Algebra**

A car travels West for 79 miles before turning at an angle of 22° North of East. The car continues on this path for 63 miles and stops. How far is the car from its starting point? Round your answer to the nearest tenth.

*February 13, 2012*

**Algebra 2**

A UFO is first sighted at point A due east from an observer at an angle of 14 degrees from the ground. And at an altitude of 223 m. The UFO is next sighted at point B due east at an angle of 28 degrees and an altitude of 446 m. What is the distance from A to B? Round your ...

*February 13, 2012*

**Algebra**

A chair lift is to be built from the bottom of the mountain (point B) to the top (point T). A surveyor found the following measurements: ∠CBT = 21°, ∠BET = 17° and the distance BE = 780. What is the span of the chair lift? (The distance from B to T?) Round ...

*February 13, 2012*

**Algebra**

First year students attending Hogwarts ride in boats from the train station (point H) to the castle (point C). The most direct route is 760 meters and the boats travel at 100 m/min. Unfortunately, one boat got off course by 17° and traveled on this path for 5 min. until ...

*February 13, 2012*

**Algebra 2**

Find the values of the six trigonometric functions for ∠A in standard position determined by the point (63, 280). Enter your answers as fractions. sin A cos A tan A csc A sec A cot A

*February 13, 2012*

**Algebra 2**

Using the information given about a triangle, which law must you use to solve the triangle? Law of Sines, Law of Cosines, or Neither. ASA SSS SAS AAA SSA AAS

*February 13, 2012*

**math**

Triangle ABC has two sides that measure 12 inches and 16 inches. Which could be the measures of the corresponding sides of a triangle that is similar to triangle ABC? 1. 10 in and 14 in 2. 9 in and 12 in 3. 6 in and 10 in 4. 3 in and 8 in

*February 9, 2012*

**math**

Triangle ABC has two sides that measure 12 inches and 16 inches. Which could be the measures of the corresponding sides of a triangle that is similar to triangle ABC? 1. 10 in and 14 in 2. 9 in and 12 in 3. 6 in and 10 in 4. 3 in and 8 in

*February 8, 2012*

**math**

Which of the following is an illustration of the additive inverse property? 1. (-7)+7 = 0 2. 7+0 = 7 3. 7 x 1/7 = 1 4. 7 x -1 = -7

*February 8, 2012*

**Calculus**

Integrate [sinx/(1+cos^2(x))] from pi/2 to pi.

*February 5, 2012*

**critical thinking**

What are three approaches to effective writing and speaking

*February 5, 2012*

**math**

Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation? 1)1,862.82 x 10 x10 x10 2)1.86282 x 10 x10 x 10 x10 x10 3)1.86282 x 10 x10 x10 x10 4)186.282 x -10 x-10 x -10

*February 1, 2012*

**math**

Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation? 1)1,862.82 x 10 x10 x10 2)1.86282 x 10 x10 x 10 x10 x10 3)1.86282 x 10 x10 x10 x10 4)186.282 x -10 x-10 x -10

*February 1, 2012*

**Algebra 2**

There are two spinners. Each spinner is numbered 1-4. Each spinner is spun once. Find the probability of spinning each of the following:2 on the first spinner and a 4 on the second spinner, both numbers the same, 3 on exactly one spinner, one number less than the other.

*February 1, 2012*

**Algebra 2**

There are two spinners. Each spinner is numbered 1-4. Each spinner is spun once. Find the probability of spinning each of the following: a 3 on both spinners, 1 on one spinner and a 3 on the other, both numbers less than 4, 3 on at least one spinner.

*February 1, 2012*

**Algebra 2**

A bag contains 5 red, 9 white, and 10 blue marbles. Suppose you choose a marble from the bag and then choose another marble without replacing the first one. Find the probability of picking the same color both times.

*January 30, 2012*

**Math**

Redo My question is from geometry and it is it says find PB,PE,AP and PF if line AF, line BD, and line CB are median. then it says AF=33

*January 17, 2012*

**Math**

Redo My question is from geometry and it is it says find PB,PE,AP and PF if line AF, line BD, and line CB are median. then it says AF=33

*January 17, 2012*

**Math**

okay im in geormertyand i don't know how to solve this promblem its says PB,AP, and PF

*January 17, 2012*

**math**

Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.

*January 16, 2012*

**Chemistry**

What is the name of the compound PBr5 using the Stock system?

*December 14, 2011*

**CHemistry**

I don't really now this, but I suggest looking on google because they have many many answers and if you find out what this is then let me know!

*November 16, 2011*

**english ASAP**

how to give credit in an essay?

*November 14, 2011*

**english ASAP**

i am writing a paper and i want to write something that was said in the movie how do i give credit ?

*November 14, 2011*

**algebra**

Simplify by removing factors of 1: 9t^2+9t/36t^2+81t

*November 9, 2011*

**math**

what is the highth of a 30 in.tv that has the width of 24 inches?

*October 28, 2011*

**algebra**

Can someone show me how to use fractional exponents to solve 5^(1/4)*5^(2/3) and then convert to radicals and simplify to the lowest terms?

*October 20, 2011*

**algebra**

how do you get square root of (72)+ square root of (18) + square root of (50)

*October 20, 2011*

**Algebra**

I need help! The question is what numbers for which the rational expression is underfined in 8/9x+7

*October 11, 2011*

**Calculus**

If a rock is thrown upward on the planet Mars with a velocity of 14 m/s, its height in meters t seconds later is given by y = 14t − 1.86t^2. Estimate the instantaneous velocity when t = 1.

*October 8, 2011*

**algebra**

How would you solve 2/3 + 5/4

*October 7, 2011*

**algebra**

How would you solve 7/12 divided by 7/6

*October 7, 2011*

**algebra**

How would you solve 3/4 x 8/9

*October 7, 2011*

**algebra**

What happens when you plug 1 in for x into this rational expression (x^2-1)(x-1)-x

*October 7, 2011*

**english**

Although the trend is shifting, careers in science and technology continue to attract predominately men.

*September 29, 2011*

**Chemistry**

I'm supposed to do this for an organic chemistry prelab. I've read my books and tried Googling everything possible, but I still don't know how to set this up. Please help! The solubility of a certain compound in ice-cold water is 0.18g in 100 mL. Its solubility in ...

*September 29, 2011*

**Algebra II**

What was the percent growth in Home Depot's sales from 2002 to 2006. 2002 net sales was $52.1 billion 2006 net sales was $90.8 billion do the work in scientific notation I do not understand how to do this, please I need help.

*September 28, 2011*

**algebra**

The varable for y = -3/x, the varable for x = -3/y your answere is -3

*September 28, 2011*

**algebra**

an someone show me the steps to solve this problem? x^2 + 5x +8 divided by x + 3

*September 23, 2011*

**math**

can anyone show me how to devide 24 into 1,881?

*September 23, 2011*

**algebra**

can anyone show me the steps to convert to scinctific notation of these two problems: .000316 which the answer is 3.16x10^-4 and 0.000517 which the answer is 5.17x10^-4

*September 20, 2011*

**Finance**

Dave takes out a 30-year mortgage of 200000 dollars for his new house. Dave gets an interest rate of 16.8 percent compounded monthly. He agrees to make equal monthly payments, the first coming in one month. After making the 68th payment, Dave wants to buy a boat, so he wants ...

*September 17, 2011*

**Biology**

Fats are excellent energy storage molecules because a) they have a relatively high ratio of energy storing C—H bonds. b)they have a relatively high ratio of energy storing C=O bonds. c)they are hydrophobic and do not easily mix with water. d)they have a relatively high ...

*September 13, 2011*

**astronomy**

what is the speed of a point on the equator in miles per hour as the earth rotates on its axis?

*September 10, 2011*

**earth**

if the radius of the earth's orbit around the sun is 93,000,000 miles, what is the speed of the earth in it's orbit in miles per hour?

*September 10, 2011*

**astronomy**

thanks

*September 10, 2011*

**astronomy**

The radius of earth is 4000 miles, how far would you travel in going around the equator? I need the answer to this.

*September 10, 2011*

**astronomy**

i don't understand. That my homework question

*September 10, 2011*

**astronomy**

the radius of earth is 4000 miles, how far would you travel in going around the equator?

*September 10, 2011*

**math 5th grade**

I'm not sure 😬😬🤔🤔

*September 5, 2011*

**Math**

36.50

*August 30, 2011*

**science**

the effects of insecticedes on bees and subsequently the pollination of agricultural crops

*July 11, 2011*

**physics**

a box containing 2.00m cubed of air is sealed at sea level pressure of 1.0 atm and a temperature of 20.0 degrees celsius. if the box is heated in an oven to a temperature of 250 degrees celsius, what is the final pressure in atm in the box?

*May 2, 2011*

**algebra**

a.) 5*(1/100)= 5/100= .05 b.) 2^3=8 8*(1/100)= .08

*April 20, 2011*

**geometry**

An Equilateral triangle (ABC) is inscribed inside a circle. The side lengths of the triangle are 8 cm. What is the radius of the circle?

*March 29, 2011*

**math**

f(x)=3x

*February 22, 2011*

**Geography**

Oh okay. Thank you very much.

*January 31, 2011*

**Geography**

How does Western Europe's physical geography affect its settlement patterns, economy, and culture? I've looked in the lesson and on google. But all of the websites that look like they might help are blocked. Can someone help, please? I don't need the answers. But ...

*January 31, 2011*

**Integrated Physics and Chemistry**

Thank you, to both of you. (:

*January 28, 2011*

**Integrated Physics and Chemistry**

What is IMA? I'm given a picture of a pulley system and I was told to find the IMA of that pulley system. Buuut i don't know how to find the IMA, there are no numbers given in the picture. So what is IMA and how do I find it?

*January 28, 2011*

**Geography**

Okay, thank you.

*January 27, 2011*

**Geography**

explain how Western Europe's physical geography affects its climate, settlement patterns, culture, and economy. Can anyone give me a website link to go to for this information?

*January 27, 2011*

**World Geography**

Okay. Thank you. I got it. D was the correct answer. That was just a weird question. Thank you (:

*January 25, 2011*

**World Geography**

So i can put either A or D and I'll be right?

*January 25, 2011*

**World Geography**

It only gives me the option to choose one answer. That's why i was confused.

*January 25, 2011*

**World Geography**

Which statement describes negative population growth? A) Fewer people are born than die during a given period. B) Fewer people die than are born during a given period. C) More people are born than die during a given period. D) More people die than are born during a given ...

*January 25, 2011*

**physics**

A train is moving parallel and adjacent to a highway with a constant speed of 22 m/s. Initially a car is 69 m behind the train, traveling in the same direction as the train at 35 m/s and accelerating at 3 m/s 2 . What is the speed of the car just as it passes the train

*January 19, 2011*

**reimbursement methodologies**

nc_chick53.hotm

*January 4, 2011*

**reimbursement methodologies**

Really needs ALOT of help with this final exam!!! Someone please HELP! my e-mail is nc_chick53If someone could PLEASE help me

*January 4, 2011*

**Trigonometry**

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

*December 26, 2010*

**Trigonometry**

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

*December 26, 2010*

**Trigonometry**

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

*December 26, 2010*

**english**

metaphors for sports

*November 30, 2010*

**Biology**

What is the targeting pathway from translation until the protein reaches it's final functional destination for PFK and insulin? Choose from the following choices for each: a) golgi -> ER -> outside of cell b) ER -> golgi -> cytoplasm c) cytoplasm only d) ...

*November 20, 2010*

**physics help!!**

a wheel of radius R rotates making f revolutions per second. the quantity f is know as the frecuency of the motion. show tha 1/f is the time to complete one revolution, called the period T of the motion. show that the centripetal acceleration of a point at the rim of the wheel...

*November 8, 2010*

**physics**

a wheel of radius R rotates making f revolutions per second. the quantity f is know as the frecuency of the motion. show tha 1/f is the time to complete one revolution, called the period T of the motion. show that the centripetal acceleration of a point at the rim of the wheel...

*November 8, 2010*

**physics**

an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

*November 8, 2010*

**physics**

an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

*November 8, 2010*

**physics**

an astronaut rotates at the end of a tesr machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

*November 8, 2010*

**math**

What are the matrix used for?

*November 7, 2010*

**math**

What are the matrix used for?

*November 7, 2010*

**math**

What are the matrix used for?

*November 7, 2010*

**math**

What are the matrix used for?

*November 6, 2010*

**Chemistry**

In lab we determined the heat capacity of a calorimeter. The question is how would the heat capacity of the calorimeter be affected if the NaOH solution had been at 25 degrees Celsius and the HCl solution had been at 22 degrees Celsius when the two solutions were mixed? Would ...

*November 1, 2010*

**business**

an example of PEST analysis please

*October 26, 2010*

**business**

A PEST analysis of a company... answer please

*October 26, 2010*

**Chemistry**

What is the percent aluminum in a sample weighing 1.85 grams. If 35 mL of wet hydrogen gas was produced @ 24 degrees Celsius under a total pressure of 752 torr?

*October 25, 2010*

**physics**

A 50.0 kg gymast hangs vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 45 degrees with the ceiling, what is the tension in each rope?

*October 19, 2010*