Friday

February 12, 2016
Total # Posts: 217

**pre-calculus**

find all values of x in (o, Pi) that satify the given equation cos x/3=1/2
*April 3, 2012*

**pre-calculus**

Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (cos 5x)^2
*April 3, 2012*

**pre-calculus**

use a sum or difference formula to find the exact of the trigonometric function cos(-13pi/12)
*April 3, 2012*

**pre-calculus**

Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (sinx)^4
*April 3, 2012*

**Geometry**

Write a two column proof. Given: angle STV is congruent to angle TVU, angle STU is congruent to angle UVS. Prove: Angle SVT is congruent to angle UTV.
*February 25, 2012*

**math**

a rectangle has an area of 360 square .what .it is 20 centimeters long.what is its perimeter
*January 27, 2012*

**Physics**

A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
*October 6, 2011*

**Physics**

A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
*October 6, 2011*

**Physics**

A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
*October 6, 2011*

**Physics**

A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
*October 6, 2011*

**Physics**

A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
*October 6, 2011*

**3rd grade math**

31+7
*September 6, 2011*

**geometry**

A rectangular garden 10m * 18m . Find the area of a sidewalk that is 2m from the side of a garden ?
*June 21, 2011*

**geometry**

How many boxes that is 5" * 4" * 3" could be placed inside a big box of 40" * 32" * 24" ??
*June 21, 2011*

**Physics **

The mass of an astronaut is 72kg. (a) what is his weight on earth ( taking g to be 10N/kg) ? (b) if the astronaut is on the moon's surface where the acceleration due to gravity is one-sixth on the earth , calculate (I) the mass (ii) the weight of the astronaut Thanks for ...
*June 2, 2011*

**Physics**

Thanks !!! :)
*June 2, 2011*

**Physics**

A lift is pulled up to the top of a building by a constant force of 6400N at a constant speed of 2m/s. It takes 3mins to reach the top. (a) how much work is done in raising the lift to the top of the building ? (b) what is the power required ?
*June 2, 2011*

**Chemistry**

How will the equilibrium: Heat energy + CH4 + 2H2S = CS2 + 4H2 be affected by the following? a) A decrease in temperature? b) The addition of H2 c) The removal of some CH4 d) An increase in the volume of the container e) The addiotion of a catalyst. i know that [CH4] goes up...
*May 31, 2011*

**economics**

what cause the financial crisis that occurred in 2008
*May 12, 2011*

**Maths SUPER URGENT**

Thanks. Talked to my Dad. Told me to assume that the down pipes had a width of 200mm as this is for a school auditoriam. @ drwls. Yes, the roof area has already been taken into account @ bobpursley. how would i design for max rainfall? The school is in the desert.
*May 8, 2011*

**Maths SUPER URGENT**

Hey What size down pipe would I need, and how many if my roof area equals 1224.78 metres squared and I have average rainfall of 173kl per year? Also how much plumbing would I need from my hypothetical tanks?
*May 8, 2011*

**Microecinomics**

Opportunity cost is represented by what you're losing by choosing one option. For example, by going to the movies your opportunity cost is doing your homework. Therefore, the opportunity cost of producing potatoes is 50 chickens. The opportunity cost of producing chickens ...
*March 25, 2011*

**Chemistry for Engineers**

A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure is increased to 2.50 ...
*March 25, 2011*

**chemistry**

A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure is increased to 2....
*March 25, 2011*

**pre algebra**

If the question is what is the product of (8x^5-5x)(7x^3) you can find this by using the FOIL method. i.e-(8x^5)(7x^3)-(5x)(7x^3)= 56x^5+3-35x1+3= 56x^8-35x^4
*March 25, 2011*

**math**

Speed of gravity: 9.8meters/second Given 0.02 seconds, you can use conversion method. 9.8m/s*0.02seconds=0.196meters
*March 25, 2011*

**Algerbra**

This is a system of equations. x-y=8 x+y=-2 The easiest way to solve would be the elimination method because it is already set up; if you add the equations, the y cancels out and gives you: 2x=6 Further, x=3 Given x you can find y in any equation above; x-y=8 Substitute the 3...
*March 25, 2011*

**math**

Anonymous is right. m is the slope of the line and b is the y intercept. So the graph will have a negative slope of (rise/run) -2/3 and it will cross the axis at y=45
*March 25, 2011*

**Algebra**

Well, you could multiply everything by 100 to get an easier function: y=-3x^2+14x+143 in which you could try and use the quadratic theorem [-b +/- sqrt(b^2-4ac)]/2a Giving you: -14 +/- sqrt(196-(-1716)/-60 [-14 +/- sqrt(1912) ]/-6 You cant simplify too much. But you get the ...
*March 25, 2011*

**world history**

Many early historians tended to look at the past in terms of
*March 3, 2011*

**physiC**

A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.9 m apart. Assume that the lower hinge bears all the weight of the door. Determine the magnitude and direction of ...
*March 1, 2011*

**world history**

Which of the following was the first known king of Mesopotamia? A. Sargon B. Lipit-Ishtar C. Hammurabi D. Gilgamesh
*February 26, 2011*

**Health, Safety, and Nutrition (Penn Foster)**

How dare you direct me to that web site for cheating!!!!!!!!!
*February 14, 2011*

**Health, Safety, and Nutrition (Penn Foster)**

Health, Safety, and Nutrition 1. Today in class you’re going to talk to your students about Vitamin C and what it does for a person’s body. From which one of the following food groups should you select your snack for today? A. Bread, cereal, rice, and pasta group B. ...
*February 14, 2011*

**child development**

Thanks Ms. Sue
*February 14, 2011*

**child development**

B?
*February 14, 2011*

**child development**

(Penn Foster) 1- Neueon development and elaboration, which occurs between birth and age 10, is prompted by: A -aural prompts from the famiy school and environment. B-physical movement on the part of the child C- Intake of foods rich in vitamins and minerals D- exposures to ...
*February 14, 2011*

**world history**

i need the answers too!
*February 14, 2011*

**8th grade History**

Have a nice Day.
*February 3, 2011*

**8th grade History**

Thank you
*February 3, 2011*

**8th grade History**

However, thank you for answering my questions. Have a good day! :-)
*February 3, 2011*

**8th grade History**

i already did go to google. there is nothing. I searched and searched.
*February 3, 2011*

**8th grade History**

my teachers say not to go there. :(
*February 3, 2011*

**8th grade History**

Wikipedia is not a reliable source. Please do not enter wikipedia.
*February 3, 2011*

**8th grade History**

Where was the site of the Battle of Fort Sumter in the Civil War? Thanks!
*February 3, 2011*

**8th grade History**

Thanks Jeff!
*February 3, 2011*

**8th grade History**

Where was the site for the Battle of Gettysburg in the Civil War? Thanks!
*February 3, 2011*

**8th grade science**

I need help figuring out this on a food web. It goes from a flower to a butterfly to a frog to the bird to a coyote. Now I have to label them. I got them all however i do not know what the frog and bird is. HELP!! :-)
*February 1, 2011*

**8th grade science**

No because they eat primary consumers. Thanks!
*February 1, 2011*

**8th grade science**

Can a secondary consumer be eaten by another secondary consumer? Thanks! :-)
*February 1, 2011*

**8th grade science**

*please post your question some other place where it can be properly answered and so can mine. Thank you.*
*January 19, 2011*

**8th grade science**

For my quiz some of these questions confuse me. Your genome is over 99% identical to every other human on earth. True False 3 points Save All living things on earth share certain identical sequences of bases on their genome. True False and... Question 8 3 points Save The bases...
*January 19, 2011*

**8th grade Math**

:)
*January 13, 2011*

**8th grade Math**

Also please do NOT tell me the answer but show me how to solve it. Thanks everybody!
*January 13, 2011*

**8th grade Math**

Hi I need help with my math problem. It is: Name the function rule from the table given. Table- X= Y= -4 4 -2 2 0 0 answers: y = -x y = -4 y = 2x y = x I do not get how to solve this problem!
*January 13, 2011*

**math**

help me in my math worksheet
*January 12, 2011*

**8th grade science**

thanks everybody you helped me a whole lot! :)
*January 5, 2011*

**8th grade science**

I only have one way that the Man-o-War defends them self, their stingers. I need one more way. But my search engine only provides that way. :( Also when the Man-o-war gives birth this happens asexually. but i also need to answer the question how do the man - o- wars find a mate??
*January 5, 2011*

**8th grade science**

Wow that helped a lot! Thanks, can I ask you another question if you do not mind?
*January 5, 2011*

**8th grade science**

Hi! For a research project from my science class I'm having trouble trying to find an answer to the following problem. How does the Man-o-War care for their young? Thanks!
*January 5, 2011*

**8th grade science**

thanks i finshed that really helped a lot. :)
*January 5, 2011*

**8th grade science**

thank you.
*January 5, 2011*

**8th grade science**

HI! I need help with detremining how long my essay should be. It has to be from 4-5 minutes long. Thanks!
*January 5, 2011*

**Math**

Tim ate some chocolate cake for an afternoon snack He left 3/4 of the cake. If his parents ate 1/3 of the remaining cake for dinner, write a multplication problem to represent how much cake tims parentd ate
*December 2, 2010*

**math**

How many 2 inch squares can be placed completly on a rectangular board that is 12 inchea wide and 16 inches long?
*December 2, 2010*

**Pen Foster Child Care**

WOW maybe you shouldnt be taking this course. Those questions are the easiet questions. Good Luck!
*November 28, 2010*

**Statistics **

1. A large video rental chain recently decided to change its rental policy, allowing an unlimited return date instead of requiring that movies be returned the next day. The marketing team reasoned that this would greatly increase the popularity of their stores, and also that ...
*November 22, 2010*

**5th grade social studies**

Question: What time period or movement began in the textile industry? I am really confused about this questions. My answer was the time period of the 18th century. Is this correct? Question: What is an economic system based on machinery rather than animal or human power during...
*October 26, 2010*

**math**

18.2 i think
*October 17, 2010*

**Caring for school age childres**

choices- A. Peers B. family C. elementary school teachers D. Child care providers
*October 8, 2010*

**Caring for school age childres**

The formation of children's core values is most strongly influenced by
*October 8, 2010*

**Science**

This is a follow up on my other question: I need help on Mitosis, and cell reproduction.
*October 1, 2010*

**chemistry**

Sorry, can't help! Would if i could, really!
*October 1, 2010*

**Science**

I forgot my book in my desk and have homework over the weekend!! HELP ME!
*October 1, 2010*

**biochemistry**

Calculate the pH change of 10mL of HCl added to 1M phosphate buffer in 1L with initil pH of 7.2?
*September 28, 2010*

**7th grade math**

28 bags of each
*May 12, 2010*

**chem**

Calculate the ph of a buffer solution that is 0.10M in ammonia and 0.15M in ammonium chloride .kb for ammonia is 1.8*10^-5
*May 12, 2010*

**penn foster child growth and development**

D-
*April 22, 2010*

**Physics**

For constant acceleration, how does the average velocity for an interval compare with the instantaneous velocity at half-time in the interval?
*February 16, 2010*

**6th grade**

a fish
*November 3, 2009*

**physics**

Your spaceship lands on an unknown planet. To determine the local value of g, you ask a steel-toed crew member to kick a stone, and you find that if she kicks it at 18.0m/s at various angles, the maximum range she can achieve is 30.8m. What is g on this planet? How long was ...
*September 15, 2009*

**algrebra**

6-9g-27+6g -3g-21
*September 14, 2009*

**math156-proportions**

cross multiply. So for #1 It becomes (4)(5) = 15x in the next step. then continue to find X
*September 14, 2009*

**Pre-Algebra**

(7y)(5z) = 35yz (-10r)(5s) = -50rs
*September 14, 2009*

**physics**

A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 30.0 m/sat an angle of 42.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. Calculate the magnitude ...
*September 14, 2009*

**language arts**

breaking it down into simpler structure would be: The boy tricked the girl subject is boy.
*August 31, 2009*

**algebra**

distribute the 5 first x+9=20x-10 combine like terms 19=19x x= 19/19 x=1
*August 31, 2009*

**physics [vectors]**

The concept i get, but somehow i just can't execute this problem, please help me! You are given vectors A = 5.5 6.2 and B = - 3.7 7.4 . A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of C with B is 19.0. I need x and y ...
*August 30, 2009*

**Calculus**

this is how you plug it in: [(x + Δx)^2 + 1- (x^2 + 1)]/(Δx) Rework the equation to get: Δx + 2x, in it should be lim as Δx goes to 0, and that would leave you with 2x, which if you used easy method, leaves you with same answer.
*August 30, 2009*

**statistics**

females males 26 33 35 40 75 50 63 32 36 28 71 39 54 32 68 33 37 31 48 36 42 26 43 37 73 38 55 21 47 39 71 48 27 38 56 36 37 59 25 59 88 53 42 59 33 35 66 38 45 24 53 28 46 45 74 28 58 23 51 15 58 61 48 31 48 17 42 55 55 31 50 55 61 37 28 36 41 20 58 48
*August 10, 2009*

**statistics**

A researcher has observed independent samples of females and males, recording how long each person took to complete his or her shopping at a local mall. The respective times, in minutes, are listed in file. Using the 0.025 level of significance in a one-tail test, would ...
*August 10, 2009*

**statistics**

Please only the formula and steps to do this problem. Thank you An assembly process includes a torque wrench device that automatically tightens compressor housing bolts; the device has a known process standard deviation of ó = 3 lb-ft in the torque applied. A simple ...
*August 2, 2009*

**statistics**

Please only the formula and step I need for this problem. thank you In response to media inquiries and concerns expressed by groups opposed to violence, the president of a university with over 25,000 students has agreed to survey a simply random sample of her students to find ...
*August 2, 2009*

**statistics**

Please, give the formula and steps to do this problem. Thank you The average length of a flight by regional airlines in the United States has been reported as 299 miles. If a simple random sample of 30 flights by regional airlines If The average length of a flight by regional ...
*August 2, 2009*

**statistics**

If a sample of size 30 is selected, the value of A for the probability P(t greater or less A) = 0.01 is?
*August 1, 2009*

**statistics**

If a sample of size 30 is selected, the value of A for the probability p(t¡Ý A)= 0.01 is?
*August 1, 2009*

**Statistics**

8.11) For the manufacturing plant discussed in Exercise 8.10, the union president and the human resources director jointly select a simple random sample of 36 employees to engage in a discussion with regard to the company’s work rules and overtime policies. What is the ...
*July 23, 2009*

**Statistics**

For the manufacturing plant discussed in Exercise 8.10, the union president and the human resources director jointly select a simple random sample of 36 employees to engage in a discussion with regard to the company’s work rules and overtime policies. What is the ...
*July 22, 2009*

**Statistics**

city law enforcement has state that 20% of items sold by paywn within city stolen john purchase 4 items from city pawn shop for x=the number of john purchase that have been stolen how I can determine:a P(x=0, b P(2<=x), cP(1-<x-<3) and d P(x-<2).. Try
*July 21, 2009*

**Statistics**

how you can use sampling distribution and the concept of Central Limit Theorem to apply information and make good predictions and estimations when you shop for a particular item or product?
*July 20, 2009*