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3 years ago

If f(x) = x2 – 2x, find: f(-3) = [?]

Mathematics

2 answers:

Dafna1 [17]3 years ago

6 0

Step-by-step explanation:

f(-3)=(-3)^2 - 2(-3)

= 9 + 6 = 15

maksim [4K]3 years ago

3 0

9514 1404 393

Answer:

Step-by-step explanation:

Put the value where the variable is and do the arithmetic.

f(-3) = (-3)² -2(-3) = 9 +6

f(-3) = 15

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Bas_tet [7]

Answer: It would cost $150 for a party of 9 people and it would cost $260 for 20 people

Step-by-step explanation:

The number 9 falls in between 0<n<_ 12 so the cost is 150

The number 20 falls in between 12<n<_ 20 so the cost is 260

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2 years ago

Y=-x^2-10x+24 What is the y value of the vertex?

emmasim [6.3K]

Answer:

Step-by-step explanation:

1.) Get the equation in the form y = ax^2 + bx + c.

2.) Calculate -b / 2a. This is the x-coordinate of the vertex.

3.) To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y. This is the y-coordinate of the vertex.

1.) y = -x^2 - 10x + 24

2.) -(-10) / 2(-1) = -5

3.) y = -(-5)^2 - 10(-5) + 24

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3 years ago

What is 494 x 20.62 rounded to the hundredths place?

DENIUS [597]

10186.28
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3 years ago

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If you apply the changes below to the absolute value parent function, F(x)=|x|, what is the equation of the new function? Shift

Nina [5.8K]

The transformation that shifts a function along the $x-axis$ is $f(x+a)$ , which shifts the function to the left, and $f(x-a)$ , which shifts the function to the right.

The transformation that shifts a function along the $y-axis$ is $f(x)+a$ , which shifts the function up, and $f(x)-a$ , which shifts the function down

Hence, the correct answer is D: $g(x)=f(x+8)-3$

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3 years ago

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Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 50 meters. What is the diagonal d

jolli1 [7]

Answer:

70.7 meters.

Step-by-step explanation:

We have been given that Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 50 meters.

Since we know that diagonal of a square is product of side length of square and $\sqrt{2}$ . So we will find diagonal of our given square plaza by multiplying 50 by $\sqrt{2}$ .

$\text{Diagonal distance across the plaza}=50\times \sqrt{2}$

$\text{Diagonal distance across the plaza}=50\times 1.414213562373095$

$\text{Diagonal distance across the plaza}=70.71067811865475\approx 70.7$

Therefore, diagonal distance across the plaza is 70.7 meters.

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3 years ago