Mathematics, 14.05.2021 08:50 shygorringe
NEED ANSWERS ASAP Now examine the sum of a rational number, y, and an irrational number, x. The rational number y can be written as y = a b , where a and b are integers and b ≠ 0. Leave the irrational number x as x because it can’t be written as the ratio of two integers. Let’s look at a proof by contradiction. In other words, we’re trying to show that x + y is equal to a rational number instead of an irrational number. Let the sum equal m n , where m and n are integers and n ≠ 0. The process for rewriting the sum for x is shown. Statement Reason x + a b = m n substitution x + a b − a b = m n − a b x = m n − a b subtraction property of equality x = ( b b ) ( m n ) − ( n n ) ( a b ) x = b m b n − a n b n Create common denominators. x = b m − a n b n Simplify. Based on what we established about the classification of x and using the closure of integers, what does the equation tell you about the type of number x must be for the sum to be rational? What conclusion can you now make about the result of adding a rational and an irrational number?
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Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.
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If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average
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NEED ANSWERS ASAP
Now examine the sum of a rational number, y, and an irrational number, x. The rat...
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