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2x/3+x-5/4=1/6 |
2007-03-10 |
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From Nomvuyo:
2x/3+x-5/4=1/6
Answered by Penny Nom. |
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The period of a simple pendulum |
2007-03-10 |
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From Melissa:
The period of a simple pendulum of length L feet is given by: T=2pi(sqrt(L/g))seconds. It is assumed that g, the acceleration due to gravity on the surface of the earth, is 32 feet per second per second. If the pendulum is a clock that keeps good time when L=4 feet, how much time will the clock gain in 24 hours if the length of the pendulum is decreased to 3.97 feet? (Use differentials and evaluate the necessary derivative at L=4 feet.) Answer is in seconds. Melissa
Answered by Penny Nom. |
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If the product of A,B,C is 15834, what is A+B+C? |
2007-03-10 |
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From rachel:
if the product of A,B,C is 15834, what is A+B+C?
Answered by Penny Nom. |
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A truncated cone |
2007-03-10 |
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From Russell:
Hello, I have attempted to use two of your answers already given and had no real success. This young lady is making a cat food dispenser using a truncated cone. The top of the cone as a diameter of 5 inches with a height of 6 1/2 inches and diameter of 3 inches for the bottom.
Could you please map out a solution for the both of us to understand? Thank you so much for your time and for this wonderful service.
Russell
Answered by Penny Nom. |
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Can the triangle be called both an acute triangle and an equilateral triangle? |
2007-03-10 |
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From Jane:
If all sides of a triangle are the same length and all angles are 60 degrees, can the triangle be called both an acute triangle and an equilateral triangle?
Answered by Walter Whiteley. |
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How many barrels would this container hold per inch? |
2007-03-10 |
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From LaDonna:
My container is 50" across and 40.5' ft. long. I believe it would hold 140 barrels. If measuring, how many barrels would this container hold per inch?
Answered by Penny Nom. |
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A survey of 9 independent questions |
2007-03-09 |
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From Sueheir:
I have a survey of 9 independent questions. Each of the 9 questions has the following answers (Good, average, poor) occurring equally likely. How many different combinations of answers do I have ? What is the probability of each combination? how many similar combinations do I have?... thanks a lot!
Answered by Penny Nom. |
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What is pi? |
2007-03-09 |
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From Billy:
What is pi?
Answered by Jaymi Peterson and Sara Ulmer. |
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Seven digit account numbers |
2007-03-09 |
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From Miranda:
Account numbers for the Central Oil Company consist of seven digits. If the first digit cannot be 0, how many account numbers are possible? Thank you so much!!!
Answered by Penny Nom. |
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The game of 24 |
2007-03-09 |
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From colleen:
We are playing the 24 math game where four numbers need to combine using any sign (+, - X, \) to equal 24. The four numbers are 22, 21, 6, 20.
Answered by Penny Nom. |
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The volume of a cylinder |
2007-03-09 |
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From Lakeshia:
2) The volume of a cylinder (think about the volume of a can) is given by V = πr2h where r is the radius of the cylinder and h is the height of the cylinder. Suppose the volume of the can is 100 cubic centimeters. a)Write h as a function of r. Keep "p" in the function's equation. Answer b) What is the measurement of the height if the radius of the cylinder is 2 centimeters? Round your answer to the nearest whole number. Answer
Answered by Penny Nom. |
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Concrete sand |
2007-03-08 |
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From david:
Can you tell me how much 4 cubic yards of concrete sand ways in tons? THANK YOU.
Answered by Stephen La Rocque. |
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Statistics data |
2007-03-08 |
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From Parnini:
The following table shows the expenditure on different household items by a family. Draw a line graph for the following data:
Items : Food Rent Cloth Education Saving Others
Expenditure : 2000 2.500 1.500 1.200 4000 3.500
Answered by Stephen La Rocque. |
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Maximize revenue |
2007-03-08 |
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From San:
A movie theatre sells tickets for $8.50 each. The manager is considering raising the prices but knows that for every 50 cents the price is raised, 20 fewer people go to the movies. The equation R= -40c^2+84c describes the relationship between the cost of the tickets, c dollars, and the amount of revenue, R dollars, that the theatre makes. What price should the theatre charge to maximize revenue? This question comes from my gr.11 corresponding study homework and I not yet solve it. Please help! Thank you, I will appreciate your help.
Answered by Stephen La Rocque. |
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A steel pipe pile |
2007-03-08 |
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From Sean:
Need to fill a 18" OD x 60 feet steel pipe pile with a wall thickness of 1/2" What is the amount of concrete I need in order to fill? Thank you
Answered by Stephen La Rocque. |
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