Monday
October 20, 2014

Posts by Carol


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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