If 9, X and 81 are in continued proportion, find X
Answers
Answered by
3
Answer:
x=45
Step by Step Solution:
9 X 81
It means that X is the midway between 9 and 81
We all know that 81 is the 9th term of 9 which means 9×9=81
We can get the answer:
▪︎By getting the midway of 9 and then multiplying that by 9
(1, 2, 3, 4, 5, 6, 7, 8, 9) or (9÷2=4.1 so 4+1=5)
5 is in the middle
5×9=45
Answered by
10
= 9 : x : x : 81
= 9/x = x/81
= 9 × 81 = x × x
= 728 = 2x
= 728/2 = x
= 364 = x
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