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2 years ago

Solve for x: −2x − 4 > 8

Mathematics

1 answer:

kirill [66]2 years ago

4 0

Answer:

x < -6

Step-by-step explanation:

-2x -4 > 8

-2x +4 >+4

-2x >12

/-2 > /-2

x < -6

remember to flip the inequality sign whenever you divide by a negative number :)

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2 years ago

Solve each system by substitution: {y = -x + 5, 2x + y = 11

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3 years ago

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hichkok12 [17]

Answer: Area: $D. 32\frac{6}{20}$

Step-by-step explanation:

Step 1: Convert the Expressions

$4\frac{3}{4}*6\frac{4}{5}$

$\frac{19}{4}*\frac{34}{5}$

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3 years ago

Transform the given quadratic function into vertex form f(x) = quadratic function into vertex form f(x) = quadratic function int

melisa1 [442]

Answer:

Vertex form: $f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}$

The vertex is $(-\frac{7}{2},-\frac{53}{4})$

Step-by-step explanation:

For a general quadratic function the form is:

$ax ^ 2 + bx + c$

For the function

$f(x) = x ^ 2+ 7x -1$

The values of the coefficients for the function are the following: $a = 1$ , $b =7$ , $c = -1$

Take the value of b and divide it by 2. Then, the result obtained squares it.

$\frac{b}{2}= \frac{7}{2}$

$(\frac{b}{2})^2=(\frac{7}{2})^2=\frac{49}{4}$

Add and subtract $\frac{49}{4}$

$f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1$

Write the expression of the form

$f(x) = (x+\frac{b}{2})^2 +k$

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3 years ago

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Yanka [14]

Answer:

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2 years ago