Friday

January 20, 2017
Total # Posts: 30

**Calculus / Rates of Change**

A jet flying due north at 16km/min passes 2 km directly above a plan flying due east at 8km/min. How quickly are they separating when the plane is 32 km from the crossover? What I have done (I am not sure if it is correct.): r^2=x^2+y^2+z^2 Since the plane has gone 32 meters, ...

*March 6, 2016*

**Calculus / Rates of Change**

It is not specified in the question. It is a tank, so perhaps up right, vertical?

*March 6, 2016*

**Calculus / Rates of Change**

A cylindrical tank with a circular base of 8m in diamante is being filled at 4m3/min. How fast is the level rising when it is half full? Known: d=8m 2r=d r=d/2 d(v)/dt=4.0m3/min Confusion: How to apply the "half full" concept.

*March 6, 2016*

**Calculus / Rates of Change**

An isosceles triangle has a base that is 1.5 times the height. If the area is increasing at 9cm2/s, how fast is the height increasing when it is 12 cm high? Known: base=1.5H dA/dt=9.0cm2/s h=12cm dh/dt= ? Area for a triangle: LxW/2 After that, I am confused.

*March 6, 2016*

**math**

A rectangular tank measure 4m by 2.5m by 10m. If the empty tank is to be filled in 10mins by a cylindrical pipe through which water is forced at a rate of 1 metre per second, find to 3 significant figures the diameter of the pipe in centimetres.

*December 7, 2015*

**english**

the strategies we use when reading informational texts are

*January 29, 2013*

**college algebra**

Find the equation of the quadratic Functions whose graph is a parabola the points (-2,19), (3,14) and (4,25)

*August 19, 2012*

**c++**

Write a program that asks the user to input a grade that he or she received on an exam. The grade is an integer from 0 to 100 inclusive. The program should convert the numeric grade into the equivalent letter grade. Do the conversion by using a function Letter_Grade () that ...

*May 18, 2012*

**Physics**

A metal cylinder with a area of 0.01m^2 and height of 0.1m is suspended levelly in water with a thin string. a)What is the water pressure on the top and bottom of the cylinder if the cylinder top is 1m below the water surface? And the amount of buoyant force? B) calculate the ...

*April 24, 2012*

**Physics**

A mass of 1.0 kg is located at the end of a very light and rigid rod 44 cm in length. The rod is rotating about an axis at its opposite end with a rotational velocity of 3 rad/s. (a) What is the rotational inertia of the system? kg · m2 (b) What is the angular momentum ...

*April 6, 2012*

**Physics**

For a rider with a mass of 50 kg, what is the magnitude of the centripetal force required to keep that rider moving in a circle? Is the weight of the rider large enough to provide this centripetal force at the top of the cycle?

*March 4, 2012*

**Physics**

At a given instant in time, a 10-kg rock is observed to be falling with an acceleration of 7.0 m/s2. What is the magnitude of the force of air resistance acting upon the rock at this instant?

*March 4, 2012*

**algebra**

-2(3(2x+8)-4+5equal8x+4(2)-3(2)

*December 14, 2011*

**math**

-2(3(2x+8)-4+5equal8x+4(2)-3(2)

*December 14, 2011*

**Math**

-2(3(2x+8)-4+5equal8x+4(2)-3(2)

*November 14, 2011*

**geometry**

If the base equals 11 and the height equals 11 the radius is 3.14 What is the rounded to the nearest hole number?

*June 16, 2011*

**chemistry**

In comparison ot milk sugar, what is the approximate molecular weight range of proteins?

*September 28, 2010*

**maths**

solve the following simultaneous equation: 5x+2y=29 x-y=-4 2x-y=-1 3x-y=2 5x+y=16 x-2y=1 5x+2y=16 -3x+4y=-7 3x+2y=19 5x-2y=5 7x-1/3-2(7y+3)/5=10/3 5x+2/4+3y-2/5=16/5

*February 11, 2010*

**MATHS**

A store clerk sold 25 maths books and 10 english books for $855.00 .if she sold 10 maths books and 40 English books, she would have got $135 more. calculate the cost of each book.

*February 9, 2010*

**MATHS**

Two (2) Buckets were bought for X dollars each ($X) and a third bucket is bought for $less than twice the price of the first two buckets. (a) Write down an expression for the total cost of the three buckets (b) If the total cost of the buckets was less than $34. write an ...

*February 9, 2010*

**m**

Two (2) Buckets were bought for X dollars each ($X) and a third bucket is bought for $less than twice the price of the first two buckets. (a) Write down an expression for the total cost of the three buckets (b) If the total cost of the buckets was less than $34. write an ...

*February 9, 2010*

**MATHS**

A woman had $200. she went to the meatshop, a drug store and a book store. she spent four(4) times as much money in the meatshop as in the drug store. she spent $15 less at the book store than at the drug store she then had $5.00 left. USING X to represent the amount spent at ...

*February 9, 2010*

**MATHS**

The three Angles of a triangle are (x-25)degrees, (2x+40)degrees and 30 degrees. find the magnitude of each angle.

*February 9, 2010*

**Maths**

The three angles of a triangle are (x-25) degrees, (2x+40)degrees and 30 degrees. find the magnitude of each angle.

*February 9, 2010*

**Maths**

The length of a rectangle is 5cm more than its width, if the perimeter is 58 cm, calculate its width

*February 9, 2010*

**Maths**

The sides of a triangle are xcm and 5cm. The perimeter is 29cm, evaluate the value of x?

*February 9, 2010*

**Into to LAN**

• Explain how you would create the users for the sales organization unit and how to set up work groups in this particular situation. Keep in mind that you may have to name certain applications and allowable tasks for each individual or job role.

*September 13, 2009*

**4th grade math**

how to write a sum in simplest form.

*February 26, 2009*

**I need HELP bad! Macroeconomics!**

Sam has 10 shares of a company. Based upon the company's dividend policy, Sam will receive a total of $450 per year in perpetuity. What is the value of each share if the rate of interest is 8 percent?

*May 20, 2008*

**window 2003 server**

Enable compression so twice as much data can be backed up to a single DAT tape.

*February 1, 2007*

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