4 years ago

F(x)=-x^2+6x+19 find f(5)

Mathematics

1 answer:

Andrej [43]4 years ago

7 0

Answer:

f(5) = 24

Step-by-step explanation:

Step 1: Define

f(x) = -x² + 6x + 19

f(5) = x = 5

Step 2: Substitute

f(5) = -(5)² + 6(5) + 19

Step 3: Evaluate

f(5) = -25 + 30 + 19

f(5) = 5 + 19

f(5) = 24

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What's the standard equation of the circle with the general equation x2 + y2 + 4x – 2y – 20 = 0? answers: 1) (x + 2)2 + (y – 1)2

gizmo_the_mogwai [7]

Answer:

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3 years ago

Simplify. 3√-28 A 2i√7 B 12i√7 C 61√7 D -6i√7

netineya [11]

Answer:

Step-by-step explanation:

We want to simplify the expression:

$\displaystyle 3 \sqrt{-28}$

Rewrite:

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Rewrite:

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Simplify. Let i = √(-1). Hence:

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Multiply:

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Hope this helps :)

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