Step-by-step explanation:
is the answer
Answer:
y = 0.6
Given equation is 25y²-30y+9 = 0
Comparing it with ay²+by+c = 0 we get,
a = 25 , b = -30 , c = 9
we know that , y = -b ± √b² - 4ac / 2a
first we calculate b² - 4ac = (-30)² - 4×25×9 = 900 - 900 = 0
Since b² - 4ac = 0 , the roots are real and equal
∴ y = -b ± 0 / 2a = -b / 2a
∴ y = -(-30)/2(25)
∴ y = 30/50 = 0.6
∴ y = 0.6
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Answers & Comments
Step-by-step explanation:
(5y-3)2
is the answer
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Answer:
y = 0.6
Step-by-step explanation:
Given equation is 25y²-30y+9 = 0
Comparing it with ay²+by+c = 0 we get,
a = 25 , b = -30 , c = 9
we know that , y = -b ± √b² - 4ac / 2a
first we calculate b² - 4ac = (-30)² - 4×25×9 = 900 - 900 = 0
Since b² - 4ac = 0 , the roots are real and equal
∴ y = -b ± 0 / 2a = -b / 2a
∴ y = -(-30)/2(25)
∴ y = 30/50 = 0.6
∴ y = 0.6