Monday

October 20, 2014

October 20, 2014

Total # Posts: 611

**Calculus**

A=.5bh dA=.5b*dh +h*.5db Error = dA= .5(36)(.25)+.5(50)(.25)=10.75 Note: with given measurements, A = .5*36*50=900 If you are off by .25, A=.5*36.25*50.25=910.78125. Therefore you'd be off by 10.78125. Does this help to see how your estimate with differentials makes sense?
*December 16, 2013*

**Calculus**

Delta y is the Actual change of y when x changes from x to x+delta x. (I capitalized Actual so that you'd see the top part of A looks like delta - a way to remember what delta y is.) dy is the estimated change in y when x changes from x to x+delta x when you use the ...
*December 16, 2013*

**physics**

Forces of F1=975 N,F2= 745 N, f3= 1175 N and are applied at the same point. The angle between f1 and f2 is 60.0 degree and the angle between f2 and f3 is 30.0 degree. F2 is between f1 and f3 find the resultant force.
*November 24, 2013*

**physics**

three forces, each of magnitude 1450 LB act in the same point. The angle between adjacent forces is 45.0 degree. Find the resultant force?
*November 24, 2013*

**physics**

find the tension in each cable. T1=68.0 degree T2= 25.0 degree weight= 27500 N
*November 24, 2013*

**physics**

a 2.50 N rock is thrown down from a cliff at 10.0 m/s. a. what is the velocity after falling 25.0 m? b. velocity as it hits the water 125 m below? c. kinetic energy as it hits the H20?
*November 24, 2013*

**physics**

a 2.00 lb rock is dropped from a bridge to the water 50 below. a. what is the velocity as it hits the water? b. how long does it take to hit the water? c. What is its kinetic energy as it hits the H2o?
*November 24, 2013*

**physics**

how much work (in ft lb) is done by a large bucket that can lift 4.5 ton of dirt 14 ft into the air and dump it into a 5.0 yd cubed dump truck?
*November 23, 2013*

**Reading**

How do you write an essay
*November 18, 2013*

**math**

6 feet. Carlos was 6feet at the beinnig of 10th grade
*November 18, 2013*

**algebra**

In a computer game, there are four levels. At the end of each level, a player gets three times as many points as he does in the previous level. At the end of finishing the fourth level, a player gets 5400 points. How many points did the player get at the end of the first level?
*October 21, 2013*

**algebra**

Daniel and Ethan raises money for a charity one week. Daniel manages to raise $125.25. Ethan raises $20 less and decides to donate only 25th of the money this week. Together they donate $187.51 this week. How much money did Ethan raise?
*October 21, 2013*

**math**

a 64.5 person steps off a 129 kg boat with a force of 34.0 N. which object will have the larger acceleration?
*October 18, 2013*

**physics **

A. A particle is traveling without friction up and down hills and valleys. If its initial potential energy is 6 J and its initial kinetic energy is 78 J, what is its total energy, E? E: J B. If at a later point its potential energy is -14 J, what is its kinetic energy K at ...
*October 12, 2013*

**Chemistry**

Consider the reaction 2D2(g)+O2(g)→2D2O(l) What is the mass of heavy water, D2O(l), produced when 3.75g of O2(g) reacts with excess D2(g)?
*October 11, 2013*

**Algebra**

In Mr. Woo's class, 80% of students live more than half mile from school. Of those students 80% come to school by public transportation. Of those students taking public transportation, 75% takes the bus, and 75% of those students buy monthly bus passes. Nine students buy ...
*October 9, 2013*

**Statistics**

2. A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 long-distance runners. He measured their resting pulses. Their pulses ...
*September 21, 2013*

**Math for Educators**

The first difference of a sequence is 8, 12, 16, 20,... The sum of the first two terms of the original sequence is 14. Find the first three terms of the original sequence. The first term of the original sequence is? 4 What is the second term of the original sequence? 8 What is...
*June 4, 2013*

**Math for Educators**

Find the 9th term of sequence. 4, 12, 36, 108, .... The 9th term of sequence is ?? My answer 236,196 4+[3(n-1)] Correct?
*June 4, 2013*

**Math for Educators**

Find the sum of the sequence. 38+39+40+41+...+137 The sum is? My answer 175(99)= 17,325 Is this correct? If not how do I get the correct answer?
*June 4, 2013*

**Math for Educators**

Use Gauss's approach to find the following sums (do not use formulas). a. 1 + 2 + 3 + 4 +...+ 102 b. 1 + 3 + 5 + 7 +...+1001 a. The sum of the sequence is ? My answer 102-51(103)= 5,253 b. The sum of the sequence is? My answer 500.3(1,002)=501,300.6 Are my answers correct...
*June 4, 2013*

**spanish**

how do I change the position of a reflective pronouns so that the clause keeps its senses.? Example: Ellos vienen a despedirse esta noche.
*May 21, 2013*

**calculus**

The demand function for a product is given by p = 10,000 [1 − (5/5 + e^−0.001x)] where p is the price per unit (in dollars) and x is the number of units sold. Find the numbers of units sold for prices of p = $1000 and p = $1500. (Round your answers to the nearest ...
*May 10, 2013*

**math**

Brenda earns $14,260 per year. paid 24 times a year with 1 exemption. If $19.63 in taxes is withheld from each check at what rate is she taxed
*May 7, 2013*

**College Algebra and Number Theory**

SETS Let S1, ... , Sn be sets satisfying the following condition: Sj ¡ö Sj+1 for all 1 ¡Â i ¡Â n - 1. Find S1 ¡û S2 ¡û¡¦ ¡ûSn and S1 ¡ú S2 ¡ú ¡¦ ¡&...
*April 28, 2013*

**college Mathematics**

Thank you Steve
*April 26, 2013*

**college Mathematics**

I am having problems with permutations what is 5P2 The answer I have is 20 am I wrong?
*April 26, 2013*

**Business**

I was wondering who can write my papers well formatted with o% plagiarism and 100% original till my friend introduced me to academicresearchpapers, now am in my 3rd year and things are very okay. JUST send them you home work and they will help you. reach them on +(1) 3152150749
*April 17, 2013*

**Math**

What is (a+b) to the third power?
*April 15, 2013*

**math**

15 students took a science test. the average score was 88.0. later in the day a sixteenth student took the same test and scored a 92. the teacher recalculated the class average using all 16 of the scares. by how much will the class average have increased? show your work.
*April 10, 2013*

**college Mathematics**

yes Reiny it stands for intersection thank your help.
*April 8, 2013*

**college Mathematics **

Can someone please help me with this I am not getting the same answers as the examples in the book. U={1,2,3,4,5,6,7,8} A={1,2,3,4,7,8} B={1,2,4,5} Determine (A'UB')n(AUB)'
*April 8, 2013*

**math**

x/4=10/20
*April 6, 2013*

**Science**

I think mixing yeast and water, melting cheese, and baking bread is chemical. I think dissolving sugar in water and slicing bread is physical
*March 25, 2013*

**Science**

Are the following examples physical changes or chemical changes. Mixing yeast and sugar Dissolving sugar in water Slicing bread Baking bread Melting cheese
*March 25, 2013*

**Math**

Y=|x| Y=|1/2x| Can someone help me explain how decreasing the coefficient of x affects the graph
*March 21, 2013*

**Spanish**

Can someone help me peer edit my work the second paragraph is my conclusion, this is about diet: Dieta Su dieta es muy importante para mantener el bueno salud. Comiendo comidas saludables ayudas su mantener fuerte un cuerpo y perder peso o subir peso, pero de una manera ...
*March 14, 2013*

**math**

need a function table for this problem x^3-3=y
*March 13, 2013*

**Math**

More than 18'students in an algebra class pass the first test. This is about three-fifths of the class. How many students are in the class? How do you know?
*March 5, 2013*

**Chemistry**

Would you balance this one SO2 + O2. SO3 Like 2SO2 + O2. 2SO3
*February 28, 2013*

**Chemistry**

Thanks how about this one? SO2 + O2. SO3 Would it be 2SO + O2. 2SO3
*February 28, 2013*

**Chemistry**

How do you balance Fe2O3+C. 2Fe+CO2
*February 28, 2013*

**ENG1511**

I don't know where to start
*February 28, 2013*

**math **

Please help I have been working on this one problem for days. From the 9 male and 6 female representatives for an insurance company, a team of 4 men and 4 women will be selected to attend a conference on insurance fraud.How many ways can a team of 8 be selected?
*February 15, 2013*

**math **

100 raffle tickets are sold for 3 dollars each. One prize of 200 is to be rewarded. Raul purchased 1 ticket. what is his expected value and what his his fair prize
*February 12, 2013*

**math **

Of 47 plays attributed to a playwright 17 are comedies, 18 are tragedies, 12 are histories. If one play is selected random find the odds against selecting a tragedy.
*February 12, 2013*

**math **

The Kramer family room measures 23ft by 20ft. They are covering the floor with tiles that measure 1 ft on a side and cost $0.73 each? How much will they spend on the tile?
*February 12, 2013*

**college Mathematics **

I have been trying to figure this out for day's please help if you can. A survey of 59 customers was taken at a book store regarding the type of novels purchased. The survey found 34 customers purchased mysteries, 27 purchased science fiction, 20 purchased romance novels, ...
*February 12, 2013*

**college matematics**

sorry I didn't spell check before submitting I meant mathematics
*February 5, 2013*

**college matematics **

you are dealt one card from a standard 52 card deck find the probability of being dealt a heart
*February 5, 2013*

**college mathematics**

Sorry I meant how the question is worded.
*February 4, 2013*

**college mathematics**

Reiny I just read your replies but this is hoe the question is worded. That is why I myself do not understand it
*February 4, 2013*

**college mathematics **

Three people are to be selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
*February 4, 2013*

**math**

Three people are to be selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
*February 2, 2013*

**math**

Three people are being selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
*February 1, 2013*

**Tree diagrams **

Three people are being selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
*February 1, 2013*

**geometry **

give the following determine the set (A'U'B)n(AUB)' U ={1,2,3,4,5,6,7,8} A={1,2,3,7,8} B={1,3,4,6}
*January 22, 2013*

**geometery**

please walk me through this I am having a hard time with this A survey of 500 showed the following 15 had only camping 20 had only hiking trails 35 had only picnicking 185 had camping 140 had camping and hiking trails 125 had camping and picnicking 210 had hiking trails ...
*January 21, 2013*

**goemetry **

Determine AU(C'UB') U= {a,b,c,d,e,f,g,h,i,j,k} A= {a,c,d,f,g,i} B={b,c,d,f,g} C={a,b,f,i,j)
*January 21, 2013*

**geometry **

A survey of 500 showed the following 15 had only camping 20 had only hiking trails 35 had only picnicking 185 had camping 140 had camping and hiking trails 125 had camping and picnicking 210 had hiking trails Determine the number of parks that had at least one of the features
*January 19, 2013*

**geometry **

determine the measure of <1 and <2 using 14x-15 please help
*January 16, 2013*

**geometry**

The Kramer's family room measures 23 feet by 27 feet. They are covering the floor with square tiles that measure 1 foot on a slide and cost $0.98 each. How much will they spend?
*January 15, 2013*

**Physics! **

A 0.3 kg brick is dropped form a height of 8 meters. It hits the ground and comes to rest. a) Calculate the impulse exerted by ground on the brick. b) It takes 0.0013 seconds from the time the brick first touches the ground until it touches the ground. Calculate the average ...
*January 15, 2013*

**trig**

the mini tent of the clock is 5 cm long.how far is the tip of THE HAND TRAVEL IN 35 MINS.
*January 7, 2013*

**physic =)**

please..somedaY answer this -_-
*January 6, 2013*

**physic =)**

A bullet is fired directly upward from a rifle at ground level. Assuming a velocity muzzle of 490 m/s, and neglecting air resistance, find: A.height of the highest point reached. B.time required to reach this point. C.total time before the bullet returns to the ground. D.speed...
*January 6, 2013*

**math**

how far will a rock fall in 15 sec if it is dropped 150 feet above the river at an initial speed of 24 ft per sec
*December 17, 2012*

**Medical Terminology**

In the brain area, what function controls the sleep cycle? (a) pons (b) midbrain (c) mdulla oblongata (d) hypothalamus When I looked in my medical terminology book,it had told me something else and these did not seem to be th answer. According to the book it was The Reticular ...
*December 1, 2012*

**Advance Accounting**

On January 1, 20X1, Parent Company acquired 80% of the common stock of Subsidiary Company for $560,000 On this. date Subsidiary had total owners' equity of $540,000, including retained earnings of $240,000. During 20X1, Subsidiary had net income of $60,000 and paid no ...
*November 30, 2012*

**chemistry**

While you are at rest, your brain gets about 15% by volume of your blood. If your body contains 5.2 L of blood, how many liters of blood are in your brain at rest? and how many quarts?
*November 29, 2012*

**chemistry**

What is the minimum volume of 2.00 M HCl necessary to neutralize completely the hydroxide in 800.0 mL of 0.3 M NaOH?
*November 28, 2012*

**chemistry**

One-third cup of vanilla ice cream provides about 145kcal of energy. A typical adult uses about 195kcal/hr of energy while walking. If all of the enrgy in one third of a cup of valilla ice cream were to be burned off by walking, how many minutes would it ake for this energy to...
*November 26, 2012*

**english**

I need to write a short story with the ending relating to "That is how I became Captain"
*November 23, 2012*

**Physics**

An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.91 m/s, and its maximum acceleration is 6.20 m/s2. How much time elapses betwen an instant when the object's speed is at a maximum and...
*November 17, 2012*

**Education**

The answer is not A just took my test and got it wrong.
*November 12, 2012*

**math**

Of the 15 teams in the National Hockey League Eastern Conference, three of them are based in canadian cities. Each year, eight of these teams qualify for the playoffs. Assuming that all the 15 teams have an equal chance of getting into the playoffs, what is the probability ...
*November 7, 2012*

**Physics**

A block is resting at the top of a rough incline with coefficients of kinetic and static friction of 0.25 and 0.45 respectively. The angle of the incline is gradually increased until the block begins to slip. Calculate the angle that the block begins to slip.
*October 27, 2012*

**physics**

The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have ...
*October 24, 2012*

**math**

In a card game using a normal deck of playing cards containing 52 cards, 13 cards are dealt to a player. a) how many different combinations of cards are possible in that players hands? b) how many different hands are possible that consist ofnine spades and four clubs. Then ...
*October 21, 2012*

**math**

A jar contains six red marbles, four green marbles and five yellow ones. a) determine the number of ways in which any thee marbles can be selected? b) Determine the number of ways to select four marbles where two are red and two are yellow? c) Determine the number of ways in ...
*October 21, 2012*

**Math**

thank you!
*October 21, 2012*

**Math**

How many five digit numbers can be formed from the set of nine numbers (0,1,2,3,4,5,6,7,8) if no number is repeated and no number starts with zero and a) there are no other restrictins b) the result must be an odd number
*October 21, 2012*

**Math**

for a i had 7 x 7 x 7 x 7 x 7 = 16, 807 for b i had 7 x 6 x 5 x 4 x 3 = 2520 for c i had 7 x 7 x 6 x 7 x 7 c i am very unsure of though.
*October 21, 2012*

**Math**

sorry its supposed to be how many different five digit numbers! can be formed from the seven. sorry!!!!
*October 21, 2012*

**Math**

How many different numbers can be formed fro the set of seven numbers (1,2,3,4,5,6,7) if a) repitition is allowed b) repitition is not allowed c) repitition is allowed and the tird digit must be different from the second digit?
*October 21, 2012*

**statistics**

For each of the following questions, decide whether or not the sample data can be used to construct a confidence interval. How do I go about determining if the sample data can be used to construct a confidence interval? Example: To help consumers assess the risks they are ...
*October 17, 2012*

**physics**

A 5.84kg box sits on a ramp that is inclined at 35.2degrees above the horizontal. The coefficient of kinetic friction between the box and the ramp is 0.27. What horizontal force is required to move the box up the incline with a constant acceleration of 4.30m/s square
*October 11, 2012*

**physics**

A 5.84 box sits on a ramp that is inclined at 35.2 above the horizontal. The coefficient of kinetic friction between the box and the ramp is 0.27. What horizontal force is required to move the box up the incline with a constant acceleration of 4.30 ?
*October 11, 2012*

**Algebra**

In a lab experiement, there is a culture that contains 25 bacteria at 2:00. At 2:15 there are 50 bacteria, At 3:15 there are 800 bacteria. What is the conjecture about the rate at which the bacteria increase?
*October 3, 2012*

**math/ compounded **

Scenario: A client comes to you for investment advice on his $500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his investment. ...
*September 29, 2012*

**Finite Math**

A coin is loaded, so that the probability of a head occuring on a single toss is 2/3. In six tosses of the coin, what is the probability of getting all heads or all tails?
*September 27, 2012*

**math**

two fourths of a circle plus two tenths of a circle is what decimal part of a whole circle?
*September 20, 2012*

**Geometry**

If meaurement of angle DEF=(3x+5) degrees and measurement of angle KLM=(x+31) degrees, and goth angles are complementary to angle PQR, what are the measures of the angles?
*September 16, 2012*

**debt payments**

if I owe $5320.00 and must pay $300.00 a month plus 6% interest per annum till paid at approximately 18 months, how much interest money do I add to the $300.00 monthly payment
*September 5, 2012*

**College Math**

What would 10 to the 16th power be?
*September 3, 2012*

**math**

I need some ideas for teaching statistics and probability to 4th graders
*September 1, 2012*

**College Math**

LPG is stored in highly insulated spherical vessels in most oil refineries. If the inside diameter of one of these tanks is 11.4 ft, find it's volume. Report your answer to the nearest one-tenth of a gal. Use pie-3014, and 1cubic ft= 705 gal. Possible answers to choose ...
*August 31, 2012*

**College Math**

This is a triangle with sides of A,B,C. Side A = 15 yd and side C=25 yd. I need to find the missing side
*August 31, 2012*

**College Math**

Find the missing side. Approximate the answer to three decimal places when appropriate. Possible answers are: (A) 10yd, (B)31.623yd, (C) 20yd, (D) 400yd. Can you help me? I have done this so far. 180-15-25=140. I have tried everything that I know of to get the answer but I'...
*August 31, 2012*

**College Math**

Thanks. Yes it is.
*August 30, 2012*

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