Sunday

December 21, 2014

December 21, 2014

Total # Posts: 243

**Earth-Space Science**

what factors might affect the length of the rays after an impact?
*November 19, 2012*

**Maths**

Let f(x) = √(x^2 + 1) - 1 (taking the positive real square root, as usual). When x = 10^-3, compute f(x), working to 5 significant figures at every stage of the calculation. Show (algebraically) that f(x) =(x^2)/[√(x^2 + 1) +1]. Use this expression for f to compute...
*November 4, 2012*

**geometry**

A regular pentagonal pyramid has a side length of 4 mm, an apothem that measures 3 mm, and a height of 4.1 mm. What is the volume of the pyramid?
*November 2, 2012*

**Calculus (Urgent Help)**

The graph of y=cos x * ln cos^2x has seven horizontal tangent lines on the interval [0,2pi]. Find the x-coordinate of all points at which these tangent lines occur.
*October 25, 2012*

**math**

when 8 children go on a picnic,6/8 wear jeans. how many wear jeans
*October 17, 2012*

**algebra**

The reflection of the tree in the lake is 49 in long. If your shadow in the lake is 14 in long and you are 5 ft, how tall is the tree? Put your answer as inches.
*October 11, 2012*

**social studies**

what state can be found at 60 degrees north latitude and 150 degrees west longitude?
*October 10, 2012*

**Physics**

Leroy, who has a mass of 110 , is skateboarding at 9.4 when he smacks into a brick wall and comes to a dead stop in 0.2. Find his deceleration.Find the force of impact. (ouch!)
*September 12, 2012*

**Math-Algebra-1**

graph 2x -7=0
*September 5, 2012*

**grammer**

Is is the simple predicate?
*August 22, 2012*

**grammer**

What is the simple subject and simple predicate in the sentence The smell of cooking is delicious to the hungry campers?
*August 22, 2012*

**Algebra**

2,250 watts to horsepower (Round answer to the nearest thousandth.)
*July 1, 2012*

**algebra**

38 milliamps to amps (Round answer to the nearest thousandth.)
*July 1, 2012*

**Algebra**

32 ½ meters to feet (Round answer to the nearest thousandth.)
*July 1, 2012*

**algebra**

1,200 mils to inches (Round answer to the nearest tenth.)
*July 1, 2012*

**physics**

the jet has a speed of 250 miles/hr, carried a bomb of 20 kgs, in 3000 ft. how seconds the bomb fall in to 3000 ft?
*June 29, 2012*

**physics**

the jet has a speed of 250 miles/hr, carried a bomb of 20 kgs, im 3000 ft. how seconds the bomb fall in to 3000 ft?
*June 29, 2012*

**Honors English III**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?
*June 14, 2012*

**Trigonometry**

find all values of theta in the interval 0<theta<360 that satisfy the equation 3cos 2theta + 2 sin theta+1=0
*May 20, 2012*

**5th Grade Writing**

ikd
*May 17, 2012*

**6th Grade Science**

what is electromagnetic energy?
*May 4, 2012*

**Social Studies**

When was hinduism invented and by who?
*April 25, 2012*

**mental maths**

what is 15 degrees lower than 7c
*April 11, 2012*

**Algebra**

9X+y=2 -4X-y=17
*April 11, 2012*

**maths**

If I am a proper fraction with a denominator of 20 and my decimal equivalent is 0.6 then what am I
*March 21, 2012*

**Chemistry**

amount of heat generated by the combustion of 245 g of CH3OH in 2CH3OH(l)+3O2(g)=2CO2+4H2O(l)
*March 19, 2012*

**History - Italy**

What is the history of the Italian sports of soccer and football. Is Italian football the same as American soccer? If so, what is Italian soccer? Thanks for your help.
*March 18, 2012*

**Physics**

If a baseball falls a vertical distance of 2.6 m from the first to the last image, what is the time interval between the first and last image?
*March 13, 2012*

**chemistry**

the question was to check all that apply: BO33- H+ H3BO22+ O2- H3BO3 OH -
*March 12, 2012*

**chemistry**

what are the solute particles present in boric acid (H3BO3)?
*March 12, 2012*

**chemistry**

CrCl3(s) + AgNO3 (aq)= AgCl(s) + Cr(NO3)3(aq) A 0.750 g sample of impure CrCl3 was removed from a bottle that contained 1.75 g of impure sample. The removed sample was dissolved in water and required 42.5 mL of 0.215 M AgNO3 solution to react with the CrCl3 in the sample. What...
*March 12, 2012*

**chemistry**

Al(s) + H2SO4(aq)-> Al2(SO4)3(aq) + H2(g) Consider the unbalanced equation above. What volume of 0.490 M H2SO4 is needed to react with excess aluminum to produce 1.60 g of Al2(SO4)3? Use a molar mass with at least as many significant figures as the data given.
*March 12, 2012*

**chemistry**

H2SO4(aq) + NaOH(aq)-> Na2SO4(aq) + H2O(l) Consider the unbalanced equation above. What is the concentration of the original sulfuric acid solution if 60.5 mL of the acid reacts with 18.0 mL of 0.110 M sodium hydroxide?
*March 12, 2012*

**chemistry**

If 180.0 mL of 0.270 M NaOH are mixed with 230.0 mL of 0.500 M NaOH, what is the molarity of the final solution? Assume the volumes are additive.
*February 27, 2012*

**chemistry**

How many mL of 4.50 M NaOH must be diluted to produce 160.0 mL of 2.50 M NaOH?
*February 27, 2012*

**statistics**

A SINGLE CARD IS SELECTED FROM A STANDARD DECK OF 52 CARDS. IF YOU KNEW THAT THE CARD WAS A PICTURE CARD, WHAT IS THE PROBABILITY THAT IT WAS ALSO RED?
*February 27, 2012*

**Chemistry**

Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate and sodium nitrate. Suppose 45.98 mL of 0.060 M silver(I) nitrate solution and 26.64 mL of 0.10 M sodium sulfate solution are mixed. What is the maximum number of grams of silver(I) sulfate that can be made?
*February 22, 2012*

**Chemistry**

N2(g) + O2(g) --> N2O5(g) (a) Consider the unbalanced equation above. What is the maximum mass of N2O5 that can be produced when 43.0 g of N2 and 43.5 g O2 react?
*February 22, 2012*

**College Chemistry**

C6H6(l) + Cl2(g) --> C6Cl6(s) + HCl(g) Consider the unbalanced equation above. What is the maximum mass of each of the products that can be formed when 72.5 g of C6H6 and 49.0 g Cl2 react?
*February 22, 2012*

**physics**

What is the mass of a person who weighs 750N?
*February 19, 2012*

**cjs**

The current threat of terrorism has made many legislatures in Congress think about the United States combining all the police agencies into one national police organization. The centralization of power would stop the discombobulated nature of the 3 government levels of police ...
*February 19, 2012*

**math**

ms fuller has 2 2/6 pies left over from her party. write the number of pies left over as a fraction greater than 1
*February 13, 2012*

**science**

what is the massof fresh water(p=1.00g/cm^3) in a 72.8L tank?
*February 2, 2012*

**chemistry**

If you ran silver nitrate on tap water and distilled water,which one may show a slightly positive reaction? Why?
*January 18, 2012*

**science**

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?
*January 16, 2012*

**science**

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?
*January 16, 2012*

**Subject agreement**

You --------to the old north church (walk) do you use (are walking) or stays the same for present tense?
*December 14, 2011*

**math**

-[-(-k)] -(-2)(-2 + k) = -k - (4k + 3)
*December 11, 2011*

**math**

-[-(-k)] -(-2)(-2 + k) = -k - (4k + 3)
*December 11, 2011*

**maths for social science**

. A project management consultant estimated that if a particular project was completed, that t years after its date of completion, P thousand persons would be direct beneficiaries of the project, where P (t) = t3/3 - 5t2 +20t, 0<t<12 For what value of t will the maximum ...
*November 7, 2011*

**calculus**

. A project management consultant estimated that if a particular project was completed, that t years after its date of completion, P thousand persons would be direct beneficiaries of the project, where P (t) = t3/3 - 5t2 +20t, 0<t<12 For what value of t will the maximum ...
*November 7, 2011*

**I NEED HELP. PLEASE**

Thank you.
*November 2, 2011*

**I NEED HELP. PLEASE**

Thanks! How would you know whether to add or subtract?
*November 2, 2011*

**I NEED HELP. PLEASE**

I do not understand point-slope and standard form. Please help me.
*November 2, 2011*

**Statistics**

She DID do that.
*November 2, 2011*

**Math-PLEASE HELP ME**

I do not understand point-slope and standard form. Please help me.
*November 2, 2011*

**Reading**

"CALL". "BURN". I've already answered this.
*October 10, 2011*

**Calculus**

Define the quotient rule.
*October 10, 2011*

**This Website.**

Why do some people's posts get deleted?
*October 10, 2011*

**Reading**

THe base word is "call". The base word is "burn".
*October 10, 2011*

**Reading**

She's right.
*October 10, 2011*

**Math/Algebra**

dan is 12 inches taller than jay. use X for jay's height. which expression shows dan's height?
*September 22, 2011*

**math**

5/x=10/3x+4
*August 22, 2011*

**What is a good quote for Romeo and Juliet?**

" a plague on both your houses "
*May 11, 2011*

**Social Studies**

What was the Albany Plan?
*April 21, 2011*

**Math**

Simon and Leah had Eight stamps. Leah had three times as many stamps as Simon. How many stamps does Leah have??
*April 20, 2011*

**English**

I would ask to help the person
*March 2, 2011*

**math**

315 divided by 5
*February 28, 2011*

**math**

5 divided by 315
*February 28, 2011*

**physics**

will i need hlep with the right of citizens of the united states orto vote shall not be denied or abriged by the united states or by any state on account of sex so what the answer
*February 24, 2011*

**History**

i dont entirely know about the spanish american war, but world war one was caused by many things. high tensions formed by various alliences, nationalism and the dividing of africa among european powers, had put the world on edge. these tensions exploded when a young serbian ...
*February 17, 2011*

**8th grade math**

two congruent opposite sides of a trapezoid are each 4 inches longer than the top base of the trapezoid. The top base of the trapezoid is one third as long as the bottom base of the trapezoid. If the perimeter is 56 inches, what is the length of each of the four sides of the ...
*February 9, 2011*

**college Chemistry**

Popcorn kernals pop independently (i.e. unimolecularly). For one brand at constant temperature, 11 kernals pop in 10 seconds when 240 kernals are present. After 145 kernals have popped, how many kernals will pop in 10 seconds?(Your answer may include fractions of a kernal) I ...
*January 29, 2011*

**comp**

How do I write two sentences about family financial goals using the past progressive and future progressive tenses?
*January 29, 2011*

**algebra**

polynomials 8j^3-4jk^3-7
*January 25, 2011*

**Chemistry 214**

Help! A soultion contains 0.100 Pb(NO3) and 1.00x10^-5 M AgNO_3. It is intended to separate out the silver by selective precipitaion of AgI. What is the maximum percentage of total silver that can be recovered free of contamination by PbI_2? (ksp for AgI=1.5x10^-13.. Ksp for ...
*November 12, 2010*

**Grammer**

What is the simple subject and simple predicate in the sentence The smell of cooking is delicious to the hungry campers?
*November 11, 2010*

**Statisitcs**

Suppose that X and Y are independent discrete random variables and each assumes the values 0,1, and 2 with probability of 1/3 each. Find the frequency function of X+Y.
*October 30, 2010*

**math **

just do wait here is a example 34 times 41 take the 30 aND THEN THE ONE AND TAKE THE 40 AND THE THE 1 AND 30 TIMES= 120 AND THEN MULT. 4 TIMES1 WHICH IS4 AND ADD THEM TOGETHER AND IT IS 124.
*October 27, 2010*

**PHYSICS**

1.53 seconds to get to highest point so 1.53x2 to reach the end of the porabola. 3.06 seconds
*October 17, 2010*

**social studies**

what is lattitude?
*September 29, 2010*

**8th grade**

What two European countries helped start the Age of Explorations?
*September 9, 2010*

**2nd Grade Math**

I'm in 6th grade, the answer is, 10. :)
*September 8, 2010*

**math**

The width of a rectangle is 6 cm less than the length. A second rectangle, with a perimeter of 54 cm, is 3 cm wider and 2 cm shorter than the first. What are the dimensions of each rectangle. Please give complete answer :)
*August 25, 2010*

**physics**

138 or rounded to 140!
*June 26, 2010*

**psychology**

Trace the memory system from stimuli into long-term memory. Siscuss the features of each step and factors that enhance or impede information flow in each step of the process. Explain proactive and retroactive interference and how you might counteract their effects while ...
*May 23, 2010*

**5th grade**

How do you do double dight divison
*May 20, 2010*

**physics**

Tarzan, mass 85 kg, swings down on the end of a 28 m vine from a tree limb 4.4 m above the ground. How fast is Tarzan moving when he reaches the ground?
*May 11, 2010*

**2nd grade**

I'm in 6th grade, the answer is 4, the reason is because, 20 divided by 4=5 and 5x4=20, so the answer is,4.
*May 11, 2010*

**Business/ Math/ Investment**

I Only Need Question 3. I have completed the rest. I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has ...
*April 24, 2010*

**Business Analysis / Investment **

Help! I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has regularly had cash assets of $20,000 or more at the...
*April 24, 2010*

**English**

the plot of strange objects by gary crew
*April 19, 2010*

**Microbiology**

Which of the following tests are used to differentiate between these bacteria: Tests: Bacitracin Test, SXT Test, CAMP Test, Enterococcosel Agar, 6.5% NaCl Test and Optochin Test A) Streptococcus viridans and Streptococcus faecalis B) Group A and Group B Streptococci C) Group B...
*March 25, 2010*

**physics**

Find the tangential acceleration of a freely swinging pendulum when it makes an angle θ with the vertical. (Use theta for θ and g as necessary.) i tried 2.56 as an answer and it was wrong, so im guessing im suppose to use symbols?
*March 14, 2010*

**physics**

A space station is shaped like a ring and rotates to simulate gravity. If the radius of the space station is 150 m, at what frequency must it rotate so that it simulates Earth's gravity? [Hint: The apparent weight of the astronauts must be the same as their weight on Earth...
*March 13, 2010*

**physics**

A roller coaster has a vertical loop with radius 17.9 m. With what minimum speed should the roller coaster car be moving at the top of the loop so that the passengers do not lose contact with the seats? (how do i go about in solving this)
*March 13, 2010*

**statistics**

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that is takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the red barn model. Assume the assembly times follow the normal ...
*March 11, 2010*

**Business**

Writeacher, I know what you mean! the assignment is quit simple just requires a lot of reading and some research online but this one part of the first question is sooo vague and the books are even more vague not to mention insufficient. Your idea of it is the same as mine so I...
*March 10, 2010*

**Business**

In one of my assignments I'm suppose to explain the types of input text in business case analysis. I read my book and the resource book but all it says is that there are more types of input texts than the case study itself. :S I tried searching online for more indepth ...
*March 10, 2010*

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