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katrin2010 [14]
3 years ago
5

Which choice answer is it?

Mathematics
1 answer:
mafiozo [28]3 years ago
5 0

Answer:

x = 5/2 + sqrt(41)/2 or x = 5/2 - sqrt(41)/2 thus 2 is the Answer

Step-by-step explanation:

Solve for x:

x^2 - 5 x - 4 = 0

Add 4 to both sides:

x^2 - 5 x = 4

Add 25/4 to both sides:

x^2 - 5 x + 25/4 = 41/4

Write the left hand side as a square:

(x - 5/2)^2 = 41/4

Take the square root of both sides:

x - 5/2 = sqrt(41)/2 or x - 5/2 = -sqrt(41)/2

Add 5/2 to both sides:

x = 5/2 + sqrt(41)/2 or x - 5/2 = -sqrt(41)/2

Add 5/2 to both sides:

Answer: x = 5/2 + sqrt(41)/2 or x = 5/2 - sqrt(41)/2

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Please help meeee
anygoal [31]

Answer:

For the given function f(x)= -|x| + 2

the domain of the function is: All real numbers

the range of the function is: all numbers greater than or equal to 2

Step-by-step explanation:

We need to find the domain and range of the function f(x)= -|x| + 2.

Domain: Domain is defined as all the possible x values of x for which the function is true.

Range: Range is defined as all the possible y values.

So, For the given function f(x)= -|x| + 2

the domain of the function is: All real numbers (the function is true for all real numbers)

the range of the function is: all numbers greater than or equal to 2

(When solving the equation we will have value of f(x) equal or greater than 2)

6 0
3 years ago
Question
kirill [66]

Answer: 40 mg

Unitary method:

For 3kg --> 8mg

For 1kg --> 8/3 mg

For 15kg--> (8/3) * 15

              --> 40 mg

7 0
2 years ago
Expression belongs in the box?<br> (3 x 8) * 4 = 3 x (D)
Natali [406]

Answer:

8×4

Step-by-step explanation:

(3×8)×4=3× d

the only answer choice that matches is the first answer choice

8×4

6 0
3 years ago
PLEASE HELP!!! WILL MARK AS BRAINLEIST <br> Which ones are linear and nonlinear<br> Picture bellow
OlgaM077 [116]

Linear equations are:

y=x+5

5x+5y=25

Non-linear equations are:

y = 2x^3

y=x^2-3

y=\frac{x^2}{2}

Step-by-step explanation:

Lets define linear and non-linear first.

Linear equation is that equation whose degree is one. Degree is the highest power of a variable in an expression or equation.

Similarly, an equation with degree greater than 2 are called non-linear equation

In the given equations,

y = 2x^3 => Degree: 3

y=x+5 => Degree: 1

y=x^2-3 => Degree: 2

5x+5y=25 => Degree:1

y=\frac{x^2}{2} => Degree:2

Hence,

Linear equations are:

y=x+5

5x+5y=25

Non-linear equations are:

y = 2x^3

y=x^2-3

y=\frac{x^2}{2}

Keywords: Linear equations, expressions

Learn more about linear equations at:

  • brainly.com/question/9969022
  • brainly.com/question/9801816

#LearnwithBrainly

8 0
4 years ago
50 POINTS, GEOMETRY + BRAINLIST
erastovalidia [21]
Bisects means to separate in equal parts, meaning each part is equal. This means the equations on each side of the line are equal. Once you equate them, you combine like terms finding your answer.

1) 2x+ 3=x+7
-x -x
x+3 = 7
-3 -3
Answer: x=4 (do this for the others)
2) x=7/2
3) x=5/2
3 0
3 years ago
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