2 years ago

Is (-5)+12 equal to 7 or is (-5)+(-12) equal to 7?

Mathematics

1 answer:

dezoksy [38]2 years ago

8 0

Answer:

-5+12=7

Step-by-step explanation:

the second option is adding two negatives, which sums up to -17 rather than -7

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2 years ago

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shepuryov [24]

$\text{Given that,}\\\\a_1 = 10~ \text{ and}~ a_n = a_{n-1} -4~\text{for}~ n\geq 2\\\\a_2 = a_{2-1} -4 = a_1 -4 = 10 -4 = 6\\\\a_3 = a_{3-1} - 4=a_2 -4 = 6 -4 =2\\\\a_4 = a_{4-1} -4 = a_3 -4 = 2 -4 = -2\\\\\text{The first four terms are:}~ 10,~ 6,~ 2~, -2$