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2 years ago

Given the following function, find f(-2), f(0), and f(1). f(x) = x2 + 3 =

Mathematics

2 answers:

WARRIOR [948]2 years ago

7 0

Answer:

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Step-by-step explanation:

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yu8ijhiihj

Dennis_Churaev [7]2 years ago

5 0

The answer to f(-2) is -1. F(0) is 3. F(1) is 5.

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13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

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1 year ago

PLS HELP!!

irina [24]

$789.18 * 0.062 = $48.93
answer is <span>48.93 (first choice)</span>

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3 years ago

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which of the following is the most appropriate unit to describe the time you can drive a car based on the amount of gas

Sunny_sXe [5.5K]

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3 years ago

Which point is on the graph of the equation y = 2 x - 5?

Aneli [31]

Answer:

Step-by-step explanation:

the correct answer is number 4

if X = 2 ==> 2x -5 = 2(2) -5 = 4 - 5 = -1

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3 years ago

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vovikov84 [41]

Answer:

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2 years ago