Question

a = 1 , d = -1 , find t18​

Answer 1

a = 1 , d = -1

t18 = a + 17d

= 1 + 17(-1)

= 1 -17

= -16

Hope its helpful

Answer 2

Answer:

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Step-by-step explanation:

Microbiology is the scientific study of microorganisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, bacteriology, protistology, mycology, immunology and parasitology