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21.09.2020 •
Mathematics
The square of X varies inversely as the square root of Y and directly as the variable M. When M = 27 and Y = 16, then X = 9. Find the exact value of Y when M = 7 and X = 2
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Ответ:
Step-by-step explanation:
Given
M = 27 when Y = 16 and X = 9
Required
Find Y when M = 7 and X = 2
We start by getting the algebraic representation of the given statement
Convert the variation to an equation; we have
Where K is the constant of variation;
When M = 27; Y = 16; X = 9, the expression becomes
This gives
Make K the subject of formula
Solving for Y when M = 7 and X = 2
Recall that
Substitute values for K, M and X
Take square of both sides
Make Y the subject of formula
Ответ:
the answer is correct
Step-by-step explanation:
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