  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: products   start over

4 items are filed under this topic.    Page1/1            Arrays 2010-09-09 From Susan:I'm a lawyer but evidently incredibly stupid at 4th grade math. . . .Question: cover a tabletop with 9 rows of square tiles with 9 squares in each row. How many tiles cover the tabletop? Then, the paper shows a 9x9 array and asks how it is used to solve the problem. My daughter wrote 9x9=81. The next question is "what are the products of the two smaller arrays?" ???? There are no other arrays - are we to make smaller arrays from the 9x9? how?Answered by Robert Dawson.     Pairs of prime numbers 2003-10-13 From Nikolas:Use pairs of prime numbers to find all the numbers less than 50 that have only two prime factors. Make an organized list.Answered by Penny Nom.     1575 2003-03-13 From Sharyn:find 6 integers that when multiplied with each other equal +1575 and when the same integers are added together equal zero. there are more positives than negatives and one of the numbers is a double digit between 10 and 20Answered by Penny Nom.     Multiplying vectors 2001-10-22 From Murray:Could you please explain why a vector times a vector is a scalar and how to derive the formula vector a * vector b = ab cos(a,b)Answered by Harley Weston.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français