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sleet_krkn [62]
3 years ago
11

Function f is defined by the equation f (x) = x^2. What is f (3) PLZ HURRY

Mathematics
1 answer:
Alex787 [66]3 years ago
5 0

Answer:

f(3) = 9

Step-by-step explanation:

f(x) = x^2

f(3) means "When x is 3" So, we substitute x with 3.

f(3) = 3^2

f(3) = 3 x 3 = 9

f(3) = 9

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What number : Increased by 130% is 69 ?
e-lub [12.9K]
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Step-by-step explanation:

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See below for solution.

Step-by-step explanation:

Q13) \frac{\sqrt{11} - \sqrt{5} }{\sqrt{11}+\sqrt{5}  } = x - y\sqrt{55}

<u>LHS :-</u>

= \frac{\sqrt{11} - \sqrt{5} (\sqrt{11}-\sqrt{5})  }{\sqrt{11}+\sqrt{5} (\sqrt{11}-\sqrt{5})  }

= \frac{11-2\sqrt{55}+5 }{11 - 5}

= \frac{16-2\sqrt{55} }{6}

= \frac{2(8-\sqrt{55}) }{2(3)}

= \frac{8-\sqrt{55} }{3}

=> x = 8/3 and y = 1/3

=> <u>Option B</u>

<u></u>

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= 4 x (∛216)² + (\sqrt[4]256})³ + 2 x (\sqrt[5]{243})

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= 144 + 64 +6

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A

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