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Two problems |
2002-10-14 |
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From Eva:
a) How many different equivalence relations can be defined on the set X={a,b,c,d}? b)Show that 6 divides the product of any 3 consecutive integers. I know it is true that 6 divides the product of any 3 consecutive integers. However, i have problem showing the proof.
Answered by Leeanne Boehm and Penny Nom. |
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Pythagoras in three dimensions |
2002-10-14 |
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From Miki:
A room is 6m long, 5m wide and 3 m high. Find the distance from the corner of the floor to the opposite corner of the celing.
Answered by Peny Nom. |
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Three algebra problems |
2002-10-13 |
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From Veronica:
Solve the following inequality: 5(xsqured-4)/(xto the 5th(2x-5)to the 3rd) < or equal 0 Solve the following equations for all roots square root of x+2=-1+square root of 2x+3 what's ZERO FACTOR PROPERTY??? The hypotenuse of an isosceles right triangle is 7cm. long. Determine the lenghts of the other sides.
Answered by Leeanne Boehm. |
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Tree diagrams |
2002-10-12 |
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From Denean:
- For lunch, students can choose juice or milk; hamburger or pizza; and a banana or apple. How many lunch combinations can the students make?
- In an experiment, Monty can use paper towels or cloth. He can choose red, green, or yellow food coloring. How many combinations are there?
Answered by Penny Nom. |
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Statistics |
2002-10-11 |
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From Ed:
Suppose 25 percent of all U.S. workers belong to a labor union. What is the probability that in a random sample of 100 U.S. workers, at least 20 percent will belong to a labor union?
Answered by Claude Tardif. |
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Kilometers to miles |
2002-10-09 |
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From A student:
how many miles are in 16 kilometers?
Answered by Leeanne Boehm. |
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Nixon, Jefferson, and Madison |
2002-10-08 |
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From Lisa:
The longest-lived US presidents are John Adams(age90), Herbert Hoover (also90), and Harry Truman (88). Behind them are James Madison, Thomas Jefferson, and Richard Nixon. The lattter three men lived a total of 249 years, and their ages at the time of death form consecutive odd integers. For how long did Nixon, Jefferson, and Madison live?
Answered by Penny Nom. |
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8 squares from 12 sticks |
2002-10-08 |
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From A student:
If you have 12 sticks the same size, how do you make them into 8 squares?
Answered by Claude Tardif. |
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Baseball, basketball and football |
2002-10-08 |
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From Debbie:
The school newspaper is interviewing 6th grade students to see what sports they follow regularly on TV. Of the 70 students interviewed; 40 enjoyed basketball; 40 enjoyed baseball; 40 enjoyed football; 20 enjoyed basketball and football; 22 enjoyed baseball and basketball; 27 enjoyed football and baseball; and 12 enjoyed all three sports. How many students out of the 70 interviewed didn't follow any one of the three sports?
Answered by Leeanne Boehm, Penny Nom and Walter Whiteley. |
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A complex quadratic |
2002-10-06 |
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From Michael:
I would like to know, how to solve this Complex number: quadratic equation. ix 2 + x -i = 0
Answered by Harley Weston. |
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Relatively prime |
2002-10-04 |
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From Natasha:
I really need help with this middle level math question. My little brother is asking me and I have no clue what the answer is. Explain what it means when two numbers are negatively prime. (?)
Answered by Kathy Nolan and Penny Nom. |
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$100 is split between four guys. |
2002-10-03 |
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From Stephan:
$100 is split between four guys. A,B, C, and D. How much money does if person get if B has four more dollars than A, C has 8 more dollars than B, and D has twice as much money as C?
Answered by Penny Nom. |
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Rational expressions |
2002-10-03 |
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From Ashley:
1/x(squared) + 5/xy
Answered by Penny Nom. |
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Exponent 0 |
2002-10-02 |
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From Debbi:
can you please tell me what the exponent 0 is (i.e. 70)
Answered by Penny Nom. |
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The interrelations of the propositions in Euclid I |
2002-10-01 |
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From Rob:
I'm a student at St. John's College in Santa Fe New Mexico, are school is devoted to the great books and we're now reading Euclid's Elements in english and Attic Greek. We have an assignment to show a frequency or flow chart of how all the propositions of book one are interrelated.
Answered by Chris Fisher. |
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