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2 years ago

Evaluate the expression when X= -2 x^2 + 9x + 3

Mathematics

1 answer:

TiliK225 [7]2 years ago

3 0

Answer:

-11

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

x² + 9x + 3

x = -2

Step 2: Evaluate

Substitute in x: (-2)² + 9(-2) + 3
Exponents: 4 + 9(-2) + 3
Multiply: 4 - 18 + 3
Subtract: -14 + 3
Add: -11

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2 years ago

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2 years ago

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3 years ago

Write in slope-intercept form an equation of the line that passes through the points (−1,12) and (1,2).

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Answer:

$y=-5x+7$

Step-by-step explanation:

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

the points (−1,12) and (1,2)

substitute

$m=\frac{2-12}{1+1}$

$m=\frac{-10}{2}$

$m=-5$

step 2

we know that

The equation of the line in slope intercept form is equl to

$y=mx+b$

where

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we have

$m=-5$

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2 years ago

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KiRa [710]

Answer:

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Step-by-step explanation:

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2 years ago