G Prove each of the following statements using mathematical induction. (a) Prove the following generalized version of DeMorgan's law for logical expressions: For any integer n ≥ 2, ¬(x1∧x2∧...∧xn)=¬x1∨¬x2∨...∨¬xn You can use DeMorgan's law for two variables in your proof: ¬(x1∧x2)=¬x1∨¬x2 (b)

answer: y=4000x+14000

step-by-step explanation:

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5