Asked by Andy Blackwell Uncategorized
What did Selena q 's parents work for?
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Asked in Math and Arithmetic
Prove that if a and b are rational numbers then a multiplied by b is a rational number?
If a is rational then there exist integers p and q such that a = p/q where q>0. Similarly, b = r/s for some integers r and s (s>0) Then a*b = p/q * r/s = (p*r)/(q*s) Now, since p, q r and s are integers, p*r and q*s are integers. Also, q and s > 0 means that q*s > 0 Thus a*b can be expressed as x/y where p and r are integers implies that x = p*r is an integer q and s are positive integers implies that y = q*s is a positive integer. That is, a*b is rational.
Animal that starts with q and s?
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An equation that shows that two ratios are equivalent?
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Asked in Irrational Numbers
Can the product of two rational numbers be irrational?
No.Suppose a and b are two rational numbers. Then they can be written as follows: a = p/q, b = r/s where p, q, r and s are integers and q, s >0. Then a*b = (p*r)/(q*s). Using the properties of integers, p*r and q*s are integers and q*s is non-zero. So a*b can be expressed as a ratio of two integers and so the product is rational.
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What is the answer to add q and p triple the result then divide r by s?
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Asked in Authors, Poets, and Playwrights
What has the author Pamela Nelson Fordham written?