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If 81y^2-k=9y^2-(1/2)^2 what is the value of k

If 81y^2-k=9y^2-(1/2)^2 what is the value of k
asked 17.9k views
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If 81y^2-k=9y^2-(1/2)^2 what is the value of k

asked
User Maksim Alekseychik
by
8.1k points

1 Answer

4 votes

Answer:

k = 1/4

Explanation:

81y² - k = (9y)² - (1/2)²

(9y)² - k = (9y)² - (1/2)²

k = (1/2)² = 1/4

answered
User Jumpy
by
7.8k points
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