Saturday

December 10, 2016
Total # Posts: 181

**Physics**

A particle is initially moving along the positive x-axis at a speed of 9.90 m/s. After 2.40 s, the particle is moving along the negative y-axis at a speed of 4.71 m/s. Find the x and y components of the particle's acceleration.

*January 31, 2012*

**calculus**

The point on the curve for y = sqrt(2x+1) at which tangent is perpendicular to the line y = -3x + 6 is.... a. (4, 3) b. (0,1) c. (1, sqrt3) d. (4, -3) e. (2, sqrt 5) I'm not sure, but do you find the perpendicular slope (1/3) set that as dy/dx and solve for x or y? I tried...

*January 24, 2012*

**geometry**

quadrilateral ABCD has right angles at B and D. If ABCD is kite-shaped with AB=AD=20 and BC=CD=15, find the radius of the circle inscribed in ABCD.

*December 4, 2011*

**Math**

not an answer, but steve, how did you get sqrt of 182.88? just wondering.

*December 1, 2011*

**Math**

Thanks so much! Could you tell me the base formula used for that?

*October 11, 2011*

**Math**

The half-life of carbon-14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon-14 is present at time 0 yr, or x=0. Write the equation that expresses the percentage of carbon-14 remaining as a function of time.

*October 11, 2011*

**physics**

IDK!!!!!!!

*September 21, 2011*

**geometry**

Solve y= 5/8b+10 for b

*September 6, 2011*

**chemistry**

6 Liters

*September 2, 2011*

**Math**

The House of Representatives has 435 members. If a committee has a prime number of members, and that number is a factor of 435, then how many members can be on the committee?

*August 22, 2011*

**Math **

Solve z= 9/13c for c

*August 15, 2011*

**geometry**

the figure below represents a building in the shape of a pentagon. using the scale 1 inch= 94 feet, what is the perimeter of the building?

*August 15, 2011*

**Science**

I need to make an acrostic poem for science. My teacher said that each letter needs to start a sentence about plant life. The word is photosynthesis. I need some ideas by the 13th of June. I already have p-h-o-t of photosynthesis. Pls help me!

*June 10, 2011*

**Math**

2yd 2ft = ?

*June 1, 2011*

**math**

3xt2

*May 23, 2011*

**6th Grade Math**

76/15=5.066666666666667=506 or 507%

*May 22, 2011*

**math**

help me!

*April 28, 2011*

**physics**

There is a 1500 mile race course. I MUST have a top speed of 36 meters/s (meaning I cannot go over 36). The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must travel 200m). What is ...

*March 14, 2011*

**physics**

There is a 1500 mile race course. The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must travel 200m). What is an equation for the fastest time that I could get to 800m? What is the ...

*March 14, 2011*

**Business Communication**

Indicate the alternative that both correctly evaluates the following sentence and correctly explains the reason for the evaluation. “As soon as you provide your date of birth on Line 2, your application for a flexible spending account will be processed.” a) Good ...

*February 24, 2011*

**Business Communication**

Which of the following would be classified as an informative or positive message? a) A request for information b) An announcement of a policy that reduces benefits c) A memo for the file recording actions and rationales d) A letter to an employer announcing you have accepted ...

*February 24, 2011*

**Business Communication**

Many companies have found that family-friendly policies: a) are good recruiting tools, but often result in relocation failures. b) are one of the six leading reasons that new managers fail. c) have given employees with children higher overall compensation levels. d) produce ...

*February 24, 2011*

**Business Communication**

The dean of students is announcing a reception for new nontraditional students. Which of the following is the BEST subject line? a) Nontraditional Students b) Reception to Welcome Nontraditional Students Who are Attending the University for the First Time c) Will You Help Us ...

*February 24, 2011*

**statistics**

In a batch of 97 computer diskettes, 8 are defective. A sample of six diskettes is to be selected from the batch.How many of the samples consist of all defective diskettes?

*February 20, 2011*

**math**

You select 10 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)?

*September 20, 2010*

**8th grade**

what vegetable has these letters? HARBRUB?

*September 14, 2010*

**science **

what is a change in position

*June 1, 2010*

**science **

___________ IS A FORCE THAT OPPOSES AN OBJECT IN MOTION

*June 1, 2010*

**science **

there are no chocies

*June 1, 2010*

**social studies**

there is no chocies

*June 1, 2010*

**science **

what is force that opposes the motion of an object through liquid or gas

*June 1, 2010*

**Math**

What is the angle measure for a section in a circle graph that represents 38%?

*April 21, 2010*

**statistics**

Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is

*March 29, 2010*

**statistics**

Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is

*March 29, 2010*

**math**

ghuj

*March 29, 2010*

**Chemistry**

Use the balanced equation to determine the theoretical yield. Focus on the chemicals whose quantities you are given or are asked to find. CO is not important as it is excess and will make sure that all of the Fe2O3 will be changed to iron. Remember the quotients (numbers in ...

*March 28, 2010*

**Math**

Thank you Ms. Sue:)

*March 10, 2010*

**Math**

A juice mix requires the addition of 32 oz of water for every 12 oz of juice concentrate. How much juice mix may be made from 15 oz of concentrate?

*March 10, 2010*

**Math**

Yes! Thank you Ms. Sue

*March 4, 2010*

**Math**

Hi Ms. Sue 5/6 ÷ -18 5/6 x -1/18= -5/108 Did I do this right?

*March 4, 2010*

**Math**

Find each quotient. A. 7/3 ÷3 1/2 B. 5/6 ÷ -18

*March 4, 2010*

**Math**

Thank you

*March 2, 2010*

**Math**

how do you write 0.7012 in scientific notation?

*March 2, 2010*

**Math**

Thank you for walking me through the problem. You are greatly appreciated:)

*February 27, 2010*

**Math**

Jack has 99 hot dogs and 261 hot dog buns. He wants to put the same number of hot dogs and hot dog buns on each tray. What is the greatest number of trays Jack can use to accomplish this?

*February 27, 2010*

**social studies/history**

20 example/ways the govt. of north korea control the country and the people

*January 18, 2010*

**math**

your school is raffling off a TV set and a total of 750 tickets were sold. you sold 75 tickets to your family. what fractional value did you sell?

*December 1, 2009*

**10th grade algebra**

Hi

*November 12, 2009*

**5th grade Language**

Yaeh Ms. Sue's answers are right

*November 5, 2009*

**math**

A. write (2^3)^3 as a single power of 2. show your work . B.write your answer from part A as a standard number. please help i don't get it.

*April 19, 2009*

**5th grade social studies**

Who were some of the famous explorers of 1450-1763???

*April 15, 2009*

**5th grade social studies**

What was the french and indian war about?

*April 15, 2009*

**social studies**

who were some of the famous explorers of the years 1450-1763?

*April 15, 2009*

**7th grade**

how do you know when something has energy?

*April 15, 2009*

**Statistics**

Hi again. I did more studying on testing the hypothesis and tried the problem again. Can you check if it is correct? a) I made Ho=2/3, Ha=otherwise. I did the z test and got z=-0.0508. I think this means that 5.08% of the time, the sample will differ by AT LEAST as much as ...

*March 31, 2009*

**Statistics**

For the hypothesis test, if i were to use significance level of .10. Is the two tailed critical z value equal to + or - 1.645? Since z (-0.5873) is smaller than critical z, I said that Ho should not be rejected so 2/3 figure is NOT implausible for kissing behavior. Is this ...

*March 31, 2009*

**Statistics**

Hi, I understand that part now and got -0.5873 as the z value. However, I do not know how to find the critical z value for the two-tailed test, and without a given alpha value. Also, if I am correct, this hypothesis corresponds to part b) of the question? Can you give me ...

*March 31, 2009*

**Statistics**

I really need help with this problem. I am not sure what the question is asking and how to approach it! Thanks in advance! Its known that 2/3 of humans have a dominant right foot or eye. Is there also a right-sided dominance in kissing behaviour? In a sample of 124 kissing ...

*March 31, 2009*

**science**

how is quartz seen in the make-up of granite?

*February 6, 2009*

**english language arts**

seed folk

*October 14, 2008*

**math**

The math team in addville travled to subtractville for a math compertition. The bus averaged 40 mph from addville to subtractville but adveraged 60 mph during the return trip. What was the adverage speed of the bus for the entire trip? Thats the story problem i have to solve. ...

*September 28, 2008*

**math**

1-3 2-4 3-5 4-2 5-1 or it may be this, sorry for not being sure

*September 28, 2008*

**math**

1-3 2-4 5-1 ??? im not quite sure though

*September 28, 2008*

**ALGEBRA**

3x + 3y +xy I think that is one of them

*September 28, 2008*

**English**

please help me :( I also have another question.. do you say "show to" or "show for"?

*September 18, 2008*

**English**

I'm writing a review and want to say that "xxx is what pushes the story forward" but with a more elegant and correct formulation. English is not my first language so I don't know all the expressions and such but I think that there is a proper expression for ...

*September 18, 2008*

**math**

1. a 7/20 chance... in percent, 35 % chance 2. 55 %? :S But that sounds almost too easy... 3. I think it does always set in the west, if that's true, the answer is C - 1.

*September 18, 2008*

**Chemistry/Redox Reactions**

An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminium metal electrode immersed in a solution with [Al3+] = 1.0 M. Sodium hydroxide is added to the aluminium compartment causing Al(OH...

*August 18, 2008*

**digital electronics**

encoder & decoder, k-map

*August 12, 2008*

**Math/Health**

16.b 17.b i don't know #18 19.0 20.c

*March 12, 2008*

**Health care**

the answer d

*February 23, 2008*

**math**

alexander had some nickles in his bank. he added 3 dimes to the bank and then he had 85 cents.how many nickles did he have left? write an equation and work backward to solve.

*November 6, 2007*

**Chemistry**

"There are two ions per formula unit in this compound. The -1 anion has 8 more electrons than the cation." I need to find the Chemical formula/name. Any suggestions on how to start? This can have more than one correct answer.

*October 15, 2007*

**math**

This should be Range.

*August 26, 2007*

**Math- Calculus**

:3 yep I got there too. It was y=3x+2 I think. It doesn't matter though XD I'll just ask my teacher when I get there

*August 26, 2007*

**Math- Calculus**

Find an equation of the line that is tangent to the graph of f and parallel to the given line Function: f(x) = x^3 Line 3x-y+1 = 0 ._.; I know the derivative of the function is 3x^2 and I do have the answer in the back of my book just need the way to get it..

*August 26, 2007*

**math**

HOW DO I FIND THA AREA OF A TRIANGLE? 1/2 times the base times the height.

*January 31, 2007*

**spelling**

omg this website helped so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*January 16, 2007*

**Economics**

Is the airline business considered to be a monopoly or oligolply? it's an oligopoly, I think. If you think about it that's more likely. Good question by the way. Tom is right. Please check these sites for more information. http://en.wikipedia.org/wiki/Oligopoly (Broken...

*November 17, 2006*

**Essay Pointers**

Here is an essay i wrote about A Separate Peace. If someone can tell me what needs to be fixed and stuff. By the way, should I use heck in this essay? My friend said it was too... informal

*July 24, 2005*

**secondhand lions essays**

I have to write a typed (doubled spaced)1 page essay on each of the following ... Discuss the scenes where the boy speaks his own opinion what do these scenes tell you about the boy? How did the decisions made for the boy affect the boys life? How does this movie define family...

*July 24, 2005*