Sunday

November 29, 2015
Total # Posts: 878

**Mathematics**

Solve tan2x = 5sin2x Giving all solutions in the interval 0 ≤ x ≤ 180°
*November 18, 2015*

**physics**

ChangePE + changeKE = 0. the change in potential energy of electron is = dPE = qdV = (-e)dV. The change in kinetic energy of electron is = 1/2mV^2 - 0 = 1/2mV^2. put these together and get. (-e)dV + 1/2mV^2 = 0. 1/2mV^2 = (e)dV. mV^2 = 2(e)dV. V^2 = 2edV/m. Insert the figures ...
*October 25, 2015*

**Biology**

How much sterile saline would you have to add to add to 0.25 mL of a serum sample in order to prepare 1/50 dilution of the serum?
*October 20, 2015*

**English**

According to An Inconvenient Truth, what is the role of infrared radiation in global warming?
*September 22, 2015*

**hudson ntsan'wisi**

assess the extent to which bad road use has a direct impact on the physical,emotional, social and economic aspects to the family,the community and the country.
*August 27, 2015*

**Psychology**

Dissociation and selective attention are two possible explanations for the phenomenon of
*August 8, 2015*

**math**

85600
*August 5, 2015*

**Algebra 2**

Thank you so much, that was very helpful:)
*July 23, 2015*

**Algebra 2**

Hey, I just have two questions, Thanks. 1. Find the exact solutions of x² - (y - 6)² = 36 and y = -x² 2. Solve the system,4x² + y² = 20 and y = 4x.
*July 23, 2015*

**Geog **

Would someone please help me with this? Or at least tell me the formula I should be using? I've been trying to get help with this for four days now. I'm VERY frustrated. Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain. The initial ...
*July 9, 2015*

**math **

What is the volume of a regular pyramid having a base area of 24 square inches and height of 6 in
*June 29, 2015*

**grammar**

Which is the correct answer? I think it is A, but would like a second opinion. It was not _____ who left the door unlocked this morning. A. I B. me C. myself
*June 24, 2015*

**grammar**

Which one has the correct pronoun? The team of reporters stunned their audience when the results of the election were revealed. The team of reporters stunned its audience when the results of the election were revealed.
*June 24, 2015*

**chemistry**

1. Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions book for this test. You also may use the formulas on pages 238 243. A student increases the temperature of a 556 cm3 balloon from 278 K to 308 K. Assuming constant pressure...
*June 15, 2015*

**math**

Question 5.5. Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground? (Points : 1) 1 second 2 seconds 3 seconds 4 seconds i think its 4 sec
*June 11, 2015*

**math**

Question 5.5. Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground? (Points : 1) 1 second 2 seconds 3 seconds 4 seconds
*June 11, 2015*

**math**

Question 2.2. The height of a triangle is 5 m less than its base. The area of the triangle is 42 m2. Find the length of the base. (Points : 1) 12 m 11 m 8 m 7 m i think it's 12m
*June 11, 2015*

**english**

a, it think i figured it out
*June 11, 2015*

**english**

Question 28.28. Identify the sentence that is not punctuated correctly. (Points : 5) "Why did he call you “Bug” just then? Is that your nickname?" she asked. "Wait," she called, "I've still got to find a copy of the poem ‘Fire and ...
*June 11, 2015*

**Algebra**

I'm trying ti find the correlation coefficient for the following: The scores of 10 students on their midterm exam (x) and on their final (y) yielded the following data. Σx = 638 Σx2 = 43,572 Σy = 690 Σy2 = 49,014 Σxy = 44,636 Is the answer 0.547? ...
*June 3, 2015*

**math**

On August 18, Sullivan Company received an invoice in the amount of $6,700, having terms of sale of 4/15 EOM. What is the discount date?
*May 20, 2015*

**anatomy and physiology**

1)Provide the name and chemical symbol of 4 chemical elements you find in the human body. Select 1 of the 4 chemical elements, make the drawing of the atom and label the nucleus, protons, neutrons and electrons. 2)Make a drawing showing the molecular structure (it represents/...
*May 17, 2015*

**Chemistry**

a gas occupies 2 m3 at 100k and exerts a pressure of 100kpa. What volume will the gas occupy if the temperature is increased to 400.0k and the pressure is increased to 200.0kPa?
*May 4, 2015*

**Introduction to business**

2. Ida works on creating ways to ensure that customers receive goods at the right time and correct location. Ida is involved in her firm's ________ strategy. A. pricing B. transportation C. product D. promotion 3. Mario is part of a strategic planning team. He has ...
*May 1, 2015*

**Introduction to business**

1. In which stage of the product life cycle are profits at their highest? A. Introductory stage B. Decline stage C. Maturity stage D. Growth stage
*May 1, 2015*

**math**

What is the root of 345 without the use of tables?
*April 21, 2015*

**physics**

I can answer your question satisfactorily. I can help you with your assignments. Kindly email me midborn71 at g mail dot com for any assistance you may want. Thanks
*April 21, 2015*

**Physics**

The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after the first skydiver but ...
*April 5, 2015*

**Math**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
*April 1, 2015*

**math**

The apocalypse started in NY where 100 people were infected. From there the zombie apocalypse continued to spread. After 17 minutes the number of people infected 200 people.assume that no human have figured out how to kill the zombie or stop it from spreading for the first 24 ...
*March 15, 2015*

**math**

If you buy two DVDs for $8 each and one poster for for $6 and there was a 40% store discount what was the sales price of the purchase How do I get started I am confused???
*March 3, 2015*

**biology**

Is it 1:keeping the amount of DNA in the cell at a minimum level?
*March 1, 2015*

**biology**

Hello, I got this question wrong on a homework assignment and I still can't find the correct answer. The reduction of the chromosome number during meiosis is most important for: 1: keeping the amount of DNA in the cell at a minimum level. 2: allowing the growth of the cell...
*March 1, 2015*

**Chemistry**

Thank you Dr Bob
*February 27, 2015*

**Chemistry**

True of False, Amorphous solids have crystal structures.
*February 27, 2015*

**math**

compare 2 fractions with different numerators and denominators
*February 8, 2015*

**Spanish 1**

Oops just noticed now I made an error where "el fiesta" is written twice :/
*February 7, 2015*

**Spanish 1**

Please excuse me for this, I know it's not well done but please look it over. Thanks Hola Amigo, Tú son invitado a una dia fiesta Valentines. En mi casa el 14 de Feburero. El fiesta empezie en desayuo y terminars en cena. Llevar los pijamas a el fiesta a el fiesta...
*February 7, 2015*

**English**

How about, "The disgusting meals of Hard Luck Airlines convinced us to return by ship."
*February 7, 2015*

**algebra **

Annie is two years more than three times as old as her son, Jared. If the difference between their ages is 26, how old are Annie and Jared?
*January 13, 2015*

**Spanish 1**

Wow okay, thanks ill have to look it over closely and change it.
*January 10, 2015*

**Spanish 1**

Thanks
*January 10, 2015*

**Spanish 1**

El Taco Barato Restaurante es un lugar en centro. Mis amigos y yo comimos allí la semana posada. La comida Fue muy barata. Los camareros no deseó trabajar. Pedí un plato especial, el taco pescado. Fue cinco dólares, y uinió con un refresco. ...
*January 10, 2015*

**MATH**

Julia and Kevin are playing games at the arcade. Julia started with $15, and the machine she is playing costs $0.75 per game. Kevin started with $13, and his machine costs $0.50 per game. After how many games will these two kids have the same amount of money remaining? Set up ...
*January 8, 2015*

**PHYSICS**

An automobile accident investigator needs to determine the initial westerly velocity of jeep (m=1720 kg) that may have been speeding before colliding head-on with a Volkswagen (m=1510 kg) that was moving with a velocity of 75.7 km/h east. The speed limit on this road is 90 km/...
*December 27, 2014*

**Spanish 1**

Okay ill have to change that, thank you for looking that over.
*December 19, 2014*

**Spanish 1**

Thank you :)
*December 19, 2014*

**Spanish 1**

¡Hola Josefina! Tengo que hacer unos quehacers. Tengo que cortar el césped afuera, lavar la ropa en el lavadoro, y cocinar en la cocina. Mi madre me quiere sacudir los muebles en la oficina y hacer la cama también. Mi madre dice que tengo que trabajar, o no...
*December 19, 2014*

**Math**

Two health insurance plans are offered to employees of a company. Plan 1 has a $400 deductible and then pays 65% of the rest of the cost versus plan 2 that has a $1000 deductible and then pays 75% of the rest of the cost. What would annual medical costs have to be for plan 2 ...
*December 18, 2014*

**Chemistry Honors**

What mass of calcium bromide is needed to prepare 150.0 mL of a 3.50 M solution? (Assume that the molecular weight of CaBr2 is 200.618 g/mol) A. 105 g B. 100.42 g C. 0.105 g D. 103.35 g
*December 16, 2014*

**Chemistry Honors**

What volume of a 0.50 M MgSO4 solution will be needed to prepare 100.0 mL of a 0.20 M MgSO4 solution? A.250 mL B.100 mL C.0.250 mL D.40.0 mL
*December 16, 2014*

**Chemistry Honors**

If water, a polar molecule, is combined with another polar molecule, what can be said about the substance added to the water? A. The solubility can not be determined by only knowing the polarity. B.It is soluble in water only if the water is poured over it. C.It is insoluble ...
*December 16, 2014*

**Chemistry Honors**

Arthur is performing a lab which requires a 0.2 M solution of calcium hydroxide. However, the only calcium hydroxide solution available has a concentration of 0.5 M. How can Arthur dilute the 0.5 M solution to make 10 mL of a 0.2 M solution? A.He needs to add 2.5 mL of the 0.5...
*December 16, 2014*

**ethic**

Disloyalty, greed, merciless mess prejudice, and intolerance are examples of
*December 7, 2014*

**physics**

A 61.0 -kg bungee jumper is standing on a tall platform (h0 = 46.0 m), as indicated in the figure. The bungee cord has an unstrained length of L0 = 9.00 m, and when stretched, behaves like an ideal spring with a spring constant of 76.0 N/m. The jumper falls from rest, and it ...
*November 25, 2014*

**Maths**

find the area of the region bounded by the parabola y^2= 16x and its latus rectum
*November 15, 2014*

**Applications of definite integrals**

find the area of the region bounded by the parabola y^2= 16x and its latus rectum
*November 15, 2014*

**MATH**

Is the sum of two mixed numbers always a mixed numbers? Why or why not?
*November 13, 2014*

**algebra**

the second side of a triangle is 6 inches longer than the first side. the third side is 2 inches shorter than the double the first side. the total perimeter of the triangle is 24 inches. find the lengths of all three sides of the triangle
*October 22, 2014*

**Spanish 1**

I made the corrections, thank you so much you were very helpful. :)
*October 16, 2014*

**Spanish 1**

Okay thanks :)
*October 16, 2014*

**Spanish 1**

Hola Tia, Gracias por el dinero de mi cumpleaños. Compré pantalones y camisas en la tienda de descuentos. Cuestan $20 dólores. Pagué $2.50 dólores por los patalones verdes y $2.50 dólores por los jeans morados. Me gusta más los ...
*October 16, 2014*

**physics**

What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 1.2 Newtons?
*October 2, 2014*

**physics**

Forces of 8.85 N and 2.21 N act at right angles on a stack. What is the mass of the stack if it accelerates at a rate of 4.4 m/s^2?
*October 2, 2014*

**Physics**

Forces of 9.5 N and 5.12 N act at right angles on a reddish-green block of mass 3.19 kg. How much acceleration occurs?
*October 2, 2014*

**Science - Please Check My Answers**

The answer to 1 and 4 are A. I got it right on my quiz 3 is c .5-6 is d. 7 is b 8 is c 9 is b and 10 is d
*September 11, 2014*

**math**

What is the function rule for input x 1,2,3,4,5,6 and output 0,1,3,6,10,15? Thanks
*September 8, 2014*

**eng composition**

Thanks..I may have one more.
*August 29, 2014*

**eng composition**

Amy and carl are discussing the essay by tardiff and brizee. Army argue that her essay on how the cocoa bean is processed into chocolate should becconsidered an explanatory essay. Carl remaks that her essay might be called an explository essay. Who is correct? A. Amy is ...
*August 29, 2014*

**eng composition**

I picked B
*August 29, 2014*

**eng composition**

Which statement is true? A. Once you write a thesis statement dont change it. B. A theisi statement is the first thing you should write before drafting an essay. C. Feel free to change a thesis statement if you feel you can improve it. D. If you change your thesis statement ...
*August 29, 2014*

**eng composition**

while researching a topic, online or in print anyofthe following may be an indicator of reliability except for which one? A. The author or authors are experts in a particular field. B. The author's topic is similar to your selected topic. C. The author evaluates both sides...
*August 29, 2014*

**sentence fragment**

Both Egypt and Mesopotamia developed an organized government that consisted of one ruler maintaining order, but Egypt had a centralized authority while Mesopotamian political powers was more distributed among all the city-states. This is a topic sentence to a paragraph. can ...
*July 8, 2014*

**essay proofreading and criticism **

The agricultural revolution marked a decisive turnign point in human history. What evidence might you offer to support this claim and how might you argue against it? I fnished my essay. My questions are within the essay. The agricultural revolution is known as one of the great...
*June 28, 2014*

**history civilization thesis help.**

The agricultural revolution marked a decisive turning point in human history. What evidence might you offer to support this claim, and how might you argue against it? That's the essay question. I'm in college so i'm expected to give a really good essay but i suck. ...
*June 27, 2014*

**Math**

Charlie is due a refund of $800. If he wants to receive his money 2 months early then he must pay a $50 fee. What is the annual simple interest rate?
*June 23, 2014*

**trianom**

the min. of a clock is 9 inches long and move from 6 to 8 o'clock. hor far does the tip of the min. hand move?
*May 21, 2014*

**algebra**

A rectangular garden is fenced on thee sides with a wall forming the fourth side. The total length of the fence is 70m. The area of the garden is 600m^2. Find the dimensions of the garden.
*April 30, 2014*

**Math Help **

Consider the quadratic equation (a) Solve the equation using the quadratic formula, expressing your answer in terms of k. (b) What condition on k will assure that the equation has exactly one solution? (c) What condition on k will assure that there are two real roots?
*April 28, 2014*

**Help- Math**

Thank you so much :)
*April 28, 2014*

**Help- Math**

Newtons law of gravity states that the gravitational attraction F between two bodies is proportional to 1 over the square of the distance d between their centers. (a) Using k as the constant of proportionality, express F as a function of d. (b) What happens to F near the pole ...
*April 28, 2014*

**Math**

What is the order of the set a={-1,20,3,17,5}
*April 21, 2014*

**finances**

its not b
*April 17, 2014*

**finances **

In a Chapter 7 bankruptcy, a debtor: A. is required to draw up a petition listing all assets and liabilities. B. does not have to pay a filing fee. C. is absolved of alimony and child support payments. D. does not have to repay educational loans.
*April 17, 2014*

**personal finances **

If creditors add finance charges after subtracting payments made during the billing period, this is called the: A. APR method. B. average daily balance method. C. previous balance method. D. adjusted balance method. its not A or D someone help me
*April 17, 2014*

**Aerodynamics**

Please if you could help with this... and explain very carefully I'll be very thankful. The dragonfly has a wing chord of 0.01 m, and can fly at 10 m/s. Assume roughly sea level viscosity ν=1.45×10−5m2/s. Determine the momentum thickness θ...
*April 16, 2014*

**Physics**

Two identical pucks are set on a collision course on an air table. After the collision, puck A has a final velocity of 5.00cm/s at an angle of 28 degrees from the vertical and puck B has a final velocity of 4.00cm/s at an angle of 32 degrees from the vertical. Determine the ...
*March 30, 2014*

**cal**

Using the Second Partials Test Find the relative extrema of f(x,y)=-x^(3)+4xy-2y^(2)+1
*March 16, 2014*

**cal**

Using a Lagrange Multiplier with One Constraint. Find the maximum value of f(x,y)=4xy, where x>0 and y>0, subject to the constraint (x^(2)/3^(2)+(y^(2)/4^(2)=1.
*March 15, 2014*

**phys**

A 1000-kg airplane moves in straight flight at constant speed. The force of air friction is 1800 N. The net force on the plane is
*March 13, 2014*

**phys**

A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30 degree below the horizontal. If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is:
*March 12, 2014*

**phys**

A short 10-g string is used to pull a 50-g toy across a frictionless horizontal surface. If a 3.0 x 10^(–2)-N force is applied horizontally to the free end, the force of the string on the toy, at the other end, is: A) 0.15 N B) 6.0 x 10^(–3) N C) 2.5 x 10^(–2) N...
*March 8, 2014*

**english**

need help with writing a five-sentence paragraph using chronological order on signing on to my homepage is simple
*February 11, 2014*

**economics**

1. Think of any real-world business and assume that this business intends to increase its price. Explain what this business could do to make the demand for its product more inelastic.
*February 11, 2014*

**lube oil systems**

With many lube oil systems, it is common to cool the oil before it is pumped to the end user (engine, compressor, etc). However, for large centrifugal compressors, it is common to pump the lube oil hot, and cool the oil immediately before it enter the compressor. Since we know...
*January 29, 2014*

**compressor operations**

We are operating a centrifugal compressor. The gas composition does not change during this excursion. While holding suction pressure and flowrate constant, the inlet temperature rises. What would you expect to happen to the discharge pressure, and why
*January 29, 2014*

**Centrifulag pump curve**

Q4 The system on site is a pressure sand filter, with a service curve. The filter is backwashed using the feed pump, at a higher flow rate, shown as backwash curve. Service duty point : 3 m3/h Backwash duty point : 9 m3/h Part (a) (4 marks) What is the speed of the pump to ...
*January 29, 2014*

**compressors**

We have a compressor that has two problems ¡K the engine is constantly loaded to maximum, and the life of compressor valves is short. It is suggested to reduce the lift on the compressor valves. What problem would this help? Why would this help? What problem would this ...
*January 29, 2014*

**MATH**

A CERTAIN RECIPE ASKS FOR 2/9 CUP OF GRANOLA. HOW MUCH IS NEEDED TO MAKE 7/3 OF A RECIPE?
*January 21, 2014*

**MATH**

A CERTAIN RECIPE ASKS FOR 2/9 CUP OF GRANOLA. HOW MUCH IS NEEDED TO MAKE 7/3 OF A RECIPE?
*January 21, 2014*