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7 votes
Solve the equation −9f 2 + 153 = 0. Round to the nearest hundredth.

f = ±3.87
f = ±1.96
f = ±5
f = ±4.12

User Godice
by
6.7k points

1 Answer

7 votes

Answer:

Option D,
f = ±
4.12

Explanation:

Step 1: Subtract 153 from both sides


-9f^2 + 153 = 0


-9f^2 + 153 - 153 = 0 - 153


-9f^2 = -153

Step 2: Divide both sides by -9


(-9f^2)/(-9) = (-153)/(-9)


f^2 = 17

Step 3: Square root both sides


√(f^2) = √(17)


f = ±
4.12

Answer: Option D,
f = ±
4.12

User Jason Taylor
by
6.9k points