Friday

January 30, 2015

January 30, 2015

Total # Posts: 831

**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*

**cosmology**

150 photons
*January 19, 2014*

**cosmology**

z=0.5
*January 19, 2014*

**cal**

In my book I have diff answer. Can you double check your work?
*December 26, 2013*

**cal**

The end plates (isosceles triangles) of the trough show below were designed to withstand a fluid force of 5800 lb. How many cubic feet can the tank hold without exceeding this limitation? Assuming the density is 62.4 lb/ft^3, the maximum volume is ____ ft^3. View the graph at...
*December 26, 2013*

**cal**

Solve the problem. Find the area between y=(x-2)e^(x) and the x-axis from x=2 to x=5.
*December 23, 2013*

**cal**

Find the area of the region enclosed by the curve y=xsinx and the x-axis for 7π ≤x ≤8π .
*December 23, 2013*

**cal**

Evaluate the integral. ∫5sec^(4)x dx I got 5(secx+tanx)^(5)+C. is it right.
*December 23, 2013*

**cal**

I have these ans. chocies: pi(e-1) 2pi(e^(2)-1) pi(e^(2)-1) pi e Is it pi(e^(2)-1)
*December 23, 2013*

**cal**

Solve the problem. Find the volume of the solid generated by revolving the region bounded by the curve y=lnx, the x-axis, and the vertical line x=e^(2) about the x-axis.
*December 23, 2013*

**calc**

Determine if the following functions grow faster, slower, or at the same rate as the function 2e^(2x) as x → ∞. a. 3.2^(2x) b. e^(x/6) c. 1/8 e^(2x)
*December 16, 2013*

**Astronomy**

Tut tut - this is meant to be all your own work!
*December 5, 2013*

**Statistics**

Your program plans to acquire a total of 600 end items costing $535 million over a five-year period. The first production contract is to be awarded in FY04. The number of items to be procured (not delivered) each year and their estimated cost (in then-year dollars) is shown ...
*December 3, 2013*

**cal**

i think i got the answer. thanks anyway..
*November 23, 2013*

**cal**

The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at the given time. s= √(t^2-5), t=3
*November 23, 2013*

**cal**

Find the largest open intervals where the function is concave upward. f(x)= x/x^2+1
*November 22, 2013*

**cal**

I was doing final review for my exam and the ans to this question is given 8x^(3/2)-1/4x^(3/2) at the end of the answer key sheet. i might have to check with my prof. But thank you Reiny & Jai.
*November 22, 2013*

**cal**

haha is it then 2x^(3/2)-1/x^(3/2)
*November 22, 2013*

**cal**

Find the largest open intervals where the function is concave upward. f(x)=x^4-8x^2
*November 21, 2013*

**cal**

Decide if the given value of x is a critical number for f, and if so, decide whether the point for x on f is a relative minimum, relative maximum, or neither. f(x)= 2x^3-3x^2-12x+18; x=2 the ans. is "Critical number, minimum at (2,-2) but dont know how?
*November 21, 2013*

**cal**

Find f"(x) for the function. f(x)= 2x^3/2-6x^1/2
*November 21, 2013*

**cal**

Use the differential to approximate the quantity to four decimal places. √(122)
*November 20, 2013*

**cal**

Where did you made error on the first one? did you typed wrong numbers or problem.
*November 20, 2013*

**cal**

Find dy for the given values of x and Δx. y=4/x^4+3√x; x=4, Δx=.5
*November 20, 2013*

**cal**

Perfect!!!
*November 20, 2013*

**cal**

Find the average value of the function on the given interval. f(x)= √x+2; [1,7]
*November 20, 2013*

**cal**

I'm lost here. I think i'm adding wrong numbers or something else here.
*November 20, 2013*

**cal**

Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle. f(x)=3/x from x=2 to x=6; n=4
*November 20, 2013*

**cal**

Evaluate dy/dt for the function at the point. y√x+1 = 12; dx/dt = 8, x=15, y=3
*November 19, 2013*

**9th Grade Math**

How to write 0.023494751 and 0.040381247 as a percent rounded to one decimal? Would it be 2.3% and 4.0%?
*November 17, 2013*

**9th Grade Math**

How to change 84.9% and 88.1% to a decimal? Would it be 0.849 and 0.881?
*November 17, 2013*

**us history**

Leading the underground railroad in to further North to Canada, was due to the Fugitive Slave Act. is it true.
*November 16, 2013*

**Pipeline design**

Sketch a preliminary layout for the following heat exchanger systems. On the layout sketch indicate pipe work manifolds, access platforms, access for construction, operations and maintenance. In your answer we are looking for thought into the relative sizes of these heat ...
*November 14, 2013*

**cal**

A conical tank (with vertex down) is 12 feet across the top and 18 feet deep. If water is flowing into the tank at a rate of 18 cubic feet per minute, find the rate of change of the depth of the water when the water is 10 feet deep. I got 81/200pi ft/min.
*November 2, 2013*

**US History Mrs. Sue**

Select the group that best embraced the beliefs of Abraham Lincoln. Abolitionists or The Free Soil Party. Is it Abolitionists.
*October 31, 2013*

**math**

A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 staplers cost $18. Find the total cost of 1 box of chalk and 1 stapler.
*October 27, 2013*

**physics**

suppose the diver vaults off the springboard, leaving it with an initial speed of 3.50 m/s upward. use energy conservation to find his spped when he strikes the water.
*October 23, 2013*

**math**

I need help on study links 2.9 for 5 grade
*October 10, 2013*

**science**

light has what range of wavelength
*October 4, 2013*

**Calculus**

so answer would be none or nowhere.
*September 24, 2013*

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