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4 years ago

If f(x) = 3x^2 + 5x find f(-2) -22 -9 2 22

Mathematics

1 answer:

GuDViN [60]4 years ago

3 0

Answer:

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = 3(- 2)² + 5(- 2) = (3 × 4) - 10 = 12 - 10 = 2

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Find the area of the right triangle. If necessary, round to the nearest tenth.

Archy [21]

Answer:

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Step-by-step explanation:

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3 years ago

Find the vertex and zeros of the following function f(x)=x^2-6x-7

elena-s [515]

Try this solution:

Step-by-step explanation:

1) for zeros of the function: x²-6x-7=0; ⇒ x₁=7; x₂= -1.

2) for the vertex of the function: x₀= -b/2a, where a;b;c - numbers from ax²+bx+c=0 (from x²-6x-7=0).

x₀=6/2=3;

y₀= (4ac-b²)/4a; ⇒ y₀= -16.

It means, the coordinates of the vertex are (3;-16).

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3 years ago

Find the slope of the line below . Enter your answer as a fraction or decimal. Use a slash mark ( / ) as the fraction bar if nec

rusak2 [61]

Answer:

$\displaystyle m = 3$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Reading a coordinate plane
Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-4, -4)

Point (-2, 2)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m = \frac{2--4}{-2--4}$
[Fraction] Subtract: $\displaystyle m = \frac{6}{2}$
[Fraction] Divide: $\displaystyle m = 3$

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8090 [49]

I think it’s the first one

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KiRa [710]

Answer:

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Step-by-step explanation:

Unit price means per 1

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4 years ago

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