PLS ANSWER AND TY IF YOU DO Christopher, Omar and Ralph are representing their school at the Allegany County Spelling Bee. The probability that Christopher can spell a fifth-round word correctly is 60%, for Omar it is 70%, and for Ralph it is 50%. What is the probability that none of them will be able to spell a fifth-round word correctly? Express your answer as a percent.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

it's

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step-by-step explanation:

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734