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Mathematics, 17.07.2019 13:10 daartist3121

Sam and martha are the local names for two lighthouses that guard a particularly dangerous part of the coast. sam blinks every 12 seconds, and martha blinks every 8 seconds they blink together at midnight. how many seconds will pass before they blink together again?

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Answers: 1
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Answer from: Quest

first anwser choice.

step-by-step explanation:

the greater/less or equal to symbol (> or < with the line at the bottom) is a closed/filled in circle.

when multiplying or dividing by a negative on both sides you have to flip the inequality sign. this rule only applies to multiplying or dividing by a negative number in inequality equations. this rule is really important.

-5c + 2 _< _27

subtract from both sides by 2

-5c _< _ 27

divide both sides by -5

c _< _ 5.4

flip the inequality sign

c _> _5.4

the only possible answer that would match the simplified inequality is the first answer choice

5c+2&lt; 27 i really do not understand this.

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