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2 years ago

-2=2+x/4 solve for x

Mathematics

1 answer:

AleksAgata [21]2 years ago

3 0

Answer:

-10

Step-by-step explanation:

solve algebraically.

-2=(2+x)/4

*4 *4

-8=2+x

-2 -2

-10=x

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F(x) = x^2 + 4x + 20 find the real roots. take your time if you want :)

s344n2d4d5 [400]

Answer:

No real roots

$x = -2 + 4i, x = -2 - 4i$

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: $ax^2 + bx + c = 0$

Quadratic Equation: $x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$

Given our Equation: $f(x) = x^2 + 4x + 20$

a = 1
b = 4
c = 20

Set the equation to 0 and solve using the formula.

<h3>Solve</h3>

$x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$
$x = \frac{-4\pm\sqrt{4^2 - 4(1)(20)}}{2(1)}$
$x = \frac{-4\pm\sqrt{16 - 80}}{2}$
$x = \frac{-4\pm\sqrt{-64}}{2}$
$x = \frac{-4\pm8i}{2}$
$x = -2 + 4i, x = -2 - 4i$

There are no real roots to the quadratic.

8 0

2 years ago

Find the derivative of f(x) = 6 divided by x at x = -2.<br><br> 6<br> 3/2<br> -3/2<br> -6

Scrat [10]

Answer:

-3/2

Step-by-step explanation:

I believe the answer is -3/2. All you have to do is divide.

6 0

4 years ago

A group of college DJs surveyed students to find out what music to plan for their upcoming parties. Thirty percent of the studen

Aneli [31]

Answer:

Thus, option “c” 10% is correct.

Step-by-step explanation:

The percentage of students that like dubstep = 30%

The percentage of students that like trance music = 25%

The percentage of student that wants only house music = 20%

The percentage of students that like bot dubstep and trance = 15%

Now we have to find the percentage of students that like trance music but nor dubstep.

The percentage of students that like the trance music but nor dubstep = 100% - 30% – 25 % - 20% - 15%

The percentage of students that like trance music but nor dubstep = 10%

Thus, option “c” 10% is correct.

6 0

3 years ago

Carrie borrowed $720 from a friend to pay for a car repair. Carrie promises to repay her friend in 8 equal

shutvik [7]

The graph represents a linear function.

The amount left to pay after the eight month is (d) (8,y)

From the question, we have:

$\mathbf{Loan\ Amount =\$720}$

$\mathbf{Months =8}$

On the graph, we have the following observations

The x-axis represents the number of months
The y-axis represents the amount left to pay

So, the amount left to pay, after the first month is (1,y) -- as seen on the graph

Similarly, the amount left to pay after the eight month would be (8,y)

Hence, the true option is: (d) (8,y)

Read more about linear functions at:

brainly.com/question/20286983

7 0

3 years ago

I’m confused on this one

Ghella [55]

In a parallelogram, the opposite angles will be congruent to each other.

In this parallelogram, angles B and C are congruent, and angles A and D are congruent.

We will work on angles B and C first. Set the two angles to equal each other:

$12x + 6 = 6x + 66$

Subtract 6 from both sides:

$12x = 6x + 60$

Subtract 6x from both sides:

$6x = 60$

Divide both sides by 6 to get x by itself:

$\boxed{x = 10}$

x will equal 10.

Set angles A and D to equal each other:

$54 = 3y$

Divide both sides by 3 to get y by itself:

$\boxed{y = 18}$

y will equal 18.

The x and y values that make this quadrilateral a parallelogram will be x = 10, and y = 18.

3 0

3 years ago