Mathematics

Mathematics, 10.07.2019 02:30, Lalagrl

True or false: “if a positive integer is divisible by both 2 and 3, then it is divisible by 12.”

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Mathematics, 14.09.2019 07:10, juan01sebastian00

Prove that a positive integer is divisible by 3 if and only if the sum of digits is divisible by 3. be sure to prove it forward and backwards. as in prove knowing an integer is divisible by 3 and find that the sum of its digits is then divisible by 3. then, assume the sum of its digits is divisible by 3 and prove that the integer is then divisible by 3. if you cannot prove both ways, do not try and solve this problem.

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Mathematics, 07.10.2019 10:00, jetblackcap

All numbers divisible by 100 are divisible by 25. all numbers divisible by 25 are divisible by 5. conjecture: all numbers divisible by 100 are divisible by 5. use deductive reasoning to verify the conjecture, or provide a counterexample if the conjecture is false. a. true; law of detachment b. true; law of syllogism c. false; 75 is divisible by 5, but 75 is not divisible by 100 d. false; 200 is not divisible by 5

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Mathematics, 14.10.2019 06:30, mmimay3501

All numbers divisible by 100 are divisible by 25. all numbers divisible by 25 are divisible by 5. conjecture: all numbers divisible by 100 are divisible by 5. use deductive reasoning to verify the conjecture, or provide a counterexample if the conjecture is false. a. true; law of detachment b. true; law of syllogism c. false; 75 is divisible by 5, but 75 is not divisible by 100 d. false; 200 is not divisible by 5

Answers: 2

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