2 years ago

The sum of three consecutive even number is 120 find the number by solving a lunar equation

Mathematics

1 answer:

nikdorinn [45]2 years ago

3 0

x + x +2 + x + 4 = 120 ( I think you mean linear equation!)

3x = 114

x = 38

the numbers are 38, 40 and 42

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ludmilkaskok [199]

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Which simplifications of the powers of i are correct? There may be more than one correct answer.

fredd [130]

$\bf i^2=-1\qquad\qquad i^3=-i\qquad \qquad i^4=1 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ i^{22}\implies i^{(4\cdot 5)+2}\implies i^{4\cdot 5}i^2\implies (i^4)^5 i^2\implies 1^5(-1)\implies -1~\dotfill \bigotimes \\\\\\ i^{11}\implies i^{(2\cdot 5)+1}\implies (i^2)^5 i\implies (-1)^5(i)\implies -i~\dotfill \checkmark$

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