Sunday

April 19, 2015

April 19, 2015

Total # Posts: 685

**Pre-Calculus**

I posted earlier and didn't get an answer so I'm posting again-hoping someone could please check these two-I think they're correct Please check my answer: I think it's correct? 1.Find polar form of (-3,2) r=sqrt of (-3)^2 + 2^2)=sqrt (13) = 3.61 tan^-1(2/-3) = ...
*October 13, 2011*

**Pre-Calculus**

Please check my answer: I think it's correct? 1.Find polar form of (-3,2) r=sqrt of (-3)^2 + 2^2)=sqrt (13) = 3.61 tan^-1(2/-3) = 33.79 180-33.79 = 146.31degrees polar points are (sqrt13,146.31degrees) 2. Rectangular form of (3,112degrees) 3cos112= (-1.12) 3sin112=2.78 ...
*October 13, 2011*

**Physics**

Two football players start from rest, 12 m apart. They run directly towards each other, both players accelerating. The first player has an acceleration of 5 m/s^2 and the second has an acceleration of 4 m/s^2. a) how much time passes before they collide? b) at the instant they...
*October 10, 2011*

**trig**

a tower standing on level ground is due north of piont N and due west of point W, a distance 1,500 feet from N. If the angles of elevation of the top of the tower as measured from N and W are 8 and 11, respectively, find the height of the tower.
*October 9, 2011*

**Economics**

1.Which of the following is NOT a decision that can be made at the margin? whether to grow beans or corn on large farm whether to hire 100 new workers or not whether to leave early in the moring or late in the day whether or not to go on vacation, I think this is the answer, ...
*October 6, 2011*

**algebra 2**

part 1 Describe the graphs of the functions f(x) = 2^x – 1 and g(x) = –2^x – 1. Part 2 Compare and contrast the domain and range of f(x) and g(x).
*September 29, 2011*

**math**

what is 1,000m3 mean. how do it get to the answer of 96,050 x 1,000 m3.
*September 29, 2011*

**Biology**

What is technolgy?
*September 21, 2011*

**Algebra**

Two numbers whose sum is 30 and product is 8800? How do I find that?
*September 12, 2011*

**Algebra**

Two numbers whose sum is 30 and product is 8800? How do I find that?
*September 12, 2011*

**SCIENCE**

How do you figure out the following ..?::::: Mass Number Number of Protons Number of Electrons (OF A ELEMENT) Number of Neutrons Thanks ~ Courtneeeey (:
*September 6, 2011*

**Mathematics**

The lengths of two opposing sides of a square are decreased by forty percent. By approximately what percent would the lengths of the other two sides have to be INCREASED so that the area of the new figure ( a rectangle) is the same as the area of the original square?
*August 14, 2011*

**world geography**

why did the south agrican government change its policy of apartheid in 1990 and 1991
*June 28, 2011*

**Derivatives**

a pationt recives an injection of 1.5 milligrams of a medication, and the amount remaining in the bloodstream t hours later is A(t)= 1.5e^-0.08t .find the instantaneous rate of change of this amount: a) Immediately after the injection (time t=0)
*June 28, 2011*

**Social Studies KKK**

How did the federal government help to reduce the klans's influence in the south?
*June 3, 2011*

**world history**

Britain is wrong
*June 2, 2011*

**science**

whats the physical form in which a substance exists?
*May 16, 2011*

**geometry**

what is the midpoint of a line segment with endpoints at (-4, 15) and (22,3)
*May 16, 2011*

**chemistry**

write the formula of each acid and identify each as a diprotic, a triprotic, or a monoprotic acid sulfuric acid,perchloric acid,phosphoric acid,hydrofluoric acid,acetic acid
*May 14, 2011*

**World Geography**

What words best describe the Baltic landscape?(there can be more then one answer) a. desert b. flat c. lowland d. marshland e. mountainous f. tropical I think its B E and F Can someone please help?
*May 12, 2011*

**Math**

Find the first five terms of each sequence, defined by the given rule. An=6N-2
*May 5, 2011*

**Finance- Real Estate....really need help!!!**

A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth $15 million and require the following sequential investments to complete: Phase Description 1 Purch. land, permitting, utilities 2 Build retail 3 build apartment ...
*May 3, 2011*

**Real Estate Finance**

A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth $15 million and require the following sequential investments to complete: Phase Description 1 Purch. land, permitting, utilities 2 Build retail 3 build apartment ...
*May 2, 2011*

**chemistry**

How many grams of hydrogen peroxide must decompose to give 255 mi of oxygen gas at stp?
*April 27, 2011*

**chemistry**

How many grams of hydrogen peroxide must decompose to give 255 mi of oxygen gas at stp?
*April 27, 2011*

**Speech**

After analyzing a problem, what is the next step in the problem-solving process? a. Develop creative solutions. b. Identify possible solutions. c. Select a solution. d. Implement a solution. I think it might be B
*April 26, 2011*

**Writing**

Thanks!
*April 25, 2011*

**Writing**

I have to write my rough draft for a research paper. I have to include a thesis statement and an attention grabber. Can someone give me some examples of attention grabbers please?
*April 25, 2011*

**Speech**

the 1st one i picked b the 2nd i picked d
*April 20, 2011*

**Speech**

Group communication should be evaluated according to which of the following characteristics? a. Do the group members attain their individual goals? b. Do all members participate in the decision-making process? c. Does the group leader encourage member-to-member interaction? d...
*April 20, 2011*

**Speech**

Why is it important for group members to be group-oriented?
*April 20, 2011*

**Chemistry **

1.62 g of CoCl2 x (xH20) were heated. After heating only .88g of CoCl2 remained. What was the formula of the original hydrate?
*April 5, 2011*

**Chemistry**

how do you find PH of 0.010 M HNO3 solution?
*April 5, 2011*

**Managerial Accounting**

Flexible budget planning Sam Yu, the president of Centech Computer Services, needs your help. He wonders about the potential effects on the firm's net income if he changes the service rate that the firm charges its customers. The following basic data pertains to fiscal ...
*April 5, 2011*

**trig**

secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie
*March 30, 2011*

**Business Law**

I'm having trouble figuring out this question. I can't think of a legal theory that would apply in this case. If anyone could help me out, that would be great! Fidelity Mortgage sells a mortgage on Doug Quicksilver's home to Enterprise Bank. Enterprise erroneously ...
*March 29, 2011*

**intro to statisics**

78% of US homes have a telephone answering device. In a random sample of 250 homes, what is the probability that fewer than 50 do not have a telephone answering device. Courtney, 2nd yr college
*March 29, 2011*

**physics**

The total energy of a 2.00 kg falling rock is 5000 J. If its potential energy is 1975 J, the kinetic energy of the rock is ____ J. The speed of the rock is ___ m/s
*March 28, 2011*

**algebra 2 **

how do i graph: y(less than or equal to)-6ãx
*March 27, 2011*

**World Geography**

Which of these statments describe NATO? 1. NATO's preferred method for resolving conflict is through military defense. 2. NATO's original purpose was to defend its members from Soviet aggression. 3. NATO's members include the U.S. and Canada. 4. NATO was disbanded ...
*March 25, 2011*

**World geography**

This period was a time of great political unrest, which divided Europe into eastern and western sections. a. Cold War b. Imperialist c. Middle Ages d. Yalta Conference
*March 24, 2011*

**Geography**

What caused the fall of the Roman Empire? a. defeat by Greece in the Pyrrhic War b. lack of cultural cohesion c. land region was too large to defend d. peasant rebellion
*March 24, 2011*

**World Geography**

What about polotics, culture and settelment patterns? What could any of these have to do with water in western europe? Im highly confused..
*March 22, 2011*

**World Geography**

What is western europe economy like? What has water done to effect the economy?
*March 22, 2011*

**forest hill**

what follows a likning or action verb?
*March 16, 2011*

**english**

thesis statement on jack the ripper
*February 24, 2011*

**Chemistry**

When 1.O M solution of NaCl at 25 degrees C, is heated to 55 degrees C the: A) density increase and the molarity increases B) density increases and the molarity decreases C) density decreases and the molarity decreases
*February 22, 2011*

**calculus**

tangent line and normal line of y=(sqrtx)/(x+1) when p=(4,2/5)
*February 17, 2011*

**Physics**

Kim is tuning a piano. She strikes a 440 Hz tuning fork and a string at the same time and hears 4 beats per second. a) What are the possibe frequencies of the string? b)She tightens the string a little then repeats. She now hears 1 beat per second. What is the frequency of the...
*February 17, 2011*

**Physics**

An ob ject is released from rest on a planet that has no atmosphere. The ob ject falls freely for 5.04 m in the ﬁrst second. What is the magnitude of the acceleration due to gravity on the planet?
*February 3, 2011*

**Physics**

An automobile with an initial speed of 3.56 m/s accelerates uniformly at the rate of 2.7 m/s2. Find the displacement of the car after 4.1s.
*February 3, 2011*

**Grammar**

Please explain how to break down a sentence. Simple predicate/Simple Subjects. My mom hasn't done this for a long time and is clueless! Thanks for the help.
*February 2, 2011*

**physics**

what is the magnitude of the electric field produced by a charge of magnitude 8.00 uC at a distance of 1.00 m?
*January 27, 2011*

**Chemistry**

What mass of 3.0 wt% H2O2 solution is required to provide a 25% excess of reagent for the following reaction with 12 dietary iron tablets that contain ~15 mg of iron per tablet?
*January 27, 2011*

**Chemistry**

If the mass of isolated Fe2O3 were .300 g, what is the average mass of iron per tablet?
*January 27, 2011*

**Chemistry**

If each tablet of a dietary supplement contains ~20 mg of iron how many tablets should we analyze to provide ~.50g of Fe2O3?
*January 27, 2011*

**Algebra 1**

how do u find the slope of a line
*January 26, 2011*

**chemistry**

A ballon has a circumference of 42 cm what should the volume be in centimeters cubed?
*January 16, 2011*

**Secondary Math for teachers**

I need to know what are six functions related to the equation distance = rate x time
*January 12, 2011*

**Algebra 1 8th grade**

Can a graph that is in a complete circle possibly have a function
*January 10, 2011*

**Math**

Thank you!!!
*January 10, 2011*

**Math**

can someone explain this please? Identify whether each graph represents a function. Explain. If the graph dose represent a function is the function linear? the coordinates are (0,5) (1,0) (2,-3) (3.-4)(5,0) (6,5)
*January 10, 2011*

**reading**

how do you describe the use of poetic devices and identify ann example
*January 10, 2011*

**8th grade American History**

Thank You
*January 8, 2011*

**8th grade American History**

For my school assignment I am to create a Facebook for George Washington. Anyone have an idea of people I could put in his friends list?
*January 8, 2011*

**Music**

dose anyone know who influenced black sabbath?
*December 15, 2010*

**8th grade history **

thank you
*December 14, 2010*

**8th grade history **

Can anyone help explain this? when the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another and to assume among the powers of earth the separte and equal stations to which the laws of nature and of ...
*December 14, 2010*

**College Algebra**

Solve for C 2a=(5b-c)/(3c+1)
*December 8, 2010*

**College Algebra**

No. I swear its on my final for college algebra. I know the answer is 3.028
*December 8, 2010*

**College Algebra**

Directions: Find the REAL solutions of the equation x^3-2.6x^2=3.93 Please help, its for my final!
*December 8, 2010*

**social studies**

show me a pie chart with the population and land ownership of france in 1789
*December 8, 2010*

**algebra**

Thats just what the directions say.. But thank you so much, You Rock!!
*December 8, 2010*

**algebra**

College Algebra Directions: Solve graphically: x^(2/3)+x^(1/3)-2=0 I just dont know how to approach this?!
*December 8, 2010*

**Math**

i have no clue honestly i tried doing the second part B and i do not get it?
*December 8, 2010*

**Math**

I do not understand the second part how do i get the second part?
*December 8, 2010*

**Math**

Losing your bags during airline travel is not all that uncommon. Recently, an airline was sited for losing customers' baggage 8% of the time. A test is conducted by randomly selecting 14 customers for that airline and observing whether they had lost their baggage. Provide ...
*December 8, 2010*

**Math help**

what do i need to do next i donot understand the second part?
*December 7, 2010*

**Pre Calc**

Determine how many orders of magnitude the quantities differ. A canary weighing 20 g and a hen weighing 2 kg. I want to say 1 but I am not sure...
*December 5, 2010*

**science fair ideas**

thank you
*November 29, 2010*

**science fair ideas**

PLZ help i have a science project due in less than a week and still have no idea what im going to do dose anyone have ideas for zoology science experiments?
*November 29, 2010*

**pre algebra**

you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate the expression if you...
*November 17, 2010*

**math**

you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate the expression if you ...
*November 17, 2010*

**Physics**

When a carpenter shuts off his circular saw, the 10.0-inch diameter blade slows from 4665 rpm to zero in 2.00 s. What is the distance traveled by a point on the rim of the blade during the deceleration? (in ft). What is the magnitude of the net displacement of a point on the ...
*November 16, 2010*

**language arts**

is the a verb adjective or adverb for the word politics
*November 16, 2010*

**Physics**

The angular speed of a propeller on a boat increases with constant acceleration from 11 rad/s to 26 rad/s in 2.4 seconds. Through what angle did the propeller turn during this time?
*November 16, 2010*

**STATISTICS HELP PLEASE!**

suppose you wish to estimate a population mean based on a random sample of n observations, and prior experience suggests that sd=12.7. if you wish to estimate the mean correct to within 1.6, with probability equal to .95, how many observations should be included in your sample?
*November 15, 2010*

**Forensics **

What is a follicular tag and how can it be used to implicated a suspect of a crime?
*November 14, 2010*

**Math (hard)**

Postcard stamps are 20 cents each, while letter stamps are 33 cents each. If you have 50 stamps worth $12.60, how many of each type do you have? I dont even know where to begin with this Q.
*November 13, 2010*

**STATISTICS PLESE HELP!!**

studies indicate that drinking water supplied by some old lead-lined city piping systems may contain harmful levels of lead. an important study of the Boston water supply system showed that the distribution of lead content readings for individual water specimens had a mean and...
*November 8, 2010*

**geometry**

How do you find the slope-intercept form for 3y+2x+12=0?
*November 1, 2010*

**6th grade**

1-5/8
*October 27, 2010*

**math**

oops spelling error
*October 27, 2010*

**math**

add -3/4 to -3/4 to cancel it out then ass -3/4 to -6 so you have 1/4x=-1.5 divide 1/4 by 1/4 to get the x alone then divide -1.5 by 1/4 and whatever that comes out to be equals x
*October 27, 2010*

**6th grade math**

6/6=1 so there is 6 1/6 in one and 3/6=1/2 so there is 3 1/6 in 1/2
*October 27, 2010*

**math.**

-0.2x<-12 -0.2/-0.2 to get x alone then -12/-0.2=-60 so x=-60
*October 27, 2010*

**math**

yes
*October 27, 2010*

**Math 8th grade algerbra**

is the answer 27?
*October 27, 2010*

**Math 8th grade algerbra**

Thank you
*October 27, 2010*

**Math 8th grade algerbra**

a cylinder has a radius of 3cm and a length of 10cm every dimention of the cylinder is multiplied by 3 to form a new cylinder how is the ratio of the volumes related the ratio of corresponding dimensions? how would i do this?
*October 27, 2010*