Mathematics High School

If f(x)= x2 - 4x - 4, find the input values that make the function 0.

Answers

Answer 1

Step-by-step explanation:

f(x) = x² - 4x - 4

the general formula for solving such a quadratic equation (for f(x) = 0) is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = -4

c = -4

x = (4 ± sqrt(4² - 4×1×-4))/(2×1) = (4 ± sqrt(16 + 16))/2 =

= (4 ± sqrt(2×16))/2 = (4 ± 4×sqrt(2))/2 = 2 ± 2×sqrt(2)

x1 = 2 + 2×sqrt(2)

x2 = 2 - 2×sqrt(2)

Related Questions

HELP!!!

‐6x – 1 = 23

Please do not just post the answer please explain how you got the answer. Whoever explains best gets brainliest!

Answers

1. Add the 1 to the 23 because if it's a negative you add and if it's positive you subtract and because you need x by itself
2. divide -6 to 24
3. x=-4

Answer:

-4

Step-by-step explanation:

23+1=24

24/-6=-4

Please help look at the picture below

Answers

Answer:

I’m sorry I don’t know

Step-by-step explanation:

☹️☹️☹️☹️☹️

what is the answer -v+91=261

Answers

Answer:

v = -170

Step-by-step explanation:

-v + 91 = 261

(-v + 91) - 91 = 261 - 91

-v = 170

-v / -1 = 170 / -1

v = -170

Step-by-step explanation:

(-v) +91 = 261

(-v) =91=261

(-v)=261-91

(-v)=170

v= - 170 (change the signs)

Please help me
Three plus two times a number is seven less than four times a number.
What is that number?

Answers

Answer:

5

Step-by-step explanation:

3+2x = 4x-7

3+7=4x-2x

x=5

Answer:

Let the number be x

According to given conditions,

3 + 2x = 4x - 7

3 + 7 = 4x - 2x

10 = 2x

2x = 10

•°• x = 10/2

•°• x = 5

The number is 5.

Write all permutations of the letters E, F, G, and H if the letters F and G must remain between the letters E and H. (Enter your answers as a comma-separated list of four letter combinations. For example, the combination "C,D,E,F" should be entered as CDEF.)

Answers

Answer:

EFGH, HFGE, EGFH, HGFE

Step-by-step explanation:

Juan has 20 books to sell. He sells the books for $15 each.

The amount of money Juan makes from selling x books is represented by the equation y=15x
y
=
15
x



What is the theoretical range of the equation?

Question 2 options:

All multiples of 20 between 0 and 300, inclusive


All integers from 0 to 20, inclusive


All multiples of 15 between 0 and 300, inclusive


All real numbers

Answers

Answer:

Well u would multiply 20 x 15 to find out the highest if the range which is 300 . So that knocks it down to B or D. But since they're $15 each, It would be based of the multiples of 15 making your answer B .

The range is all the y values.....or the f(x) values .

So the practical range would be the multiples of 15 between 0 and 300,Inclusive .

Hope this helps you!!

How would four billion, nineteen million, three hundred thirty-seven thousand, two be written in standard form?

Answers

4,019,337,002 is the answer

The conditional relative frequency table was calculated by row using data from a survey of one station’s television programming. The survey compared the target audience with the type of show, either live or recorded, over a 24-hour time period. A 4-column table with 3 rows titled television programming. The first column has no label with entries adult, children, total. The second column is labeled live with entries 0. 625, 0. 5, nearly equal to 0. 583. The third column is labeled recorded with entries 0. 375, 0. 5, nearly equal to 0. 417. The fourth column is labeled total with entries 1. 0, 1. 0, 1. 0. Which is the best description of the value 0. 375 in the table? Given that the program was targeted at adults, there is a 37. 5% chance that it was recorded. Given that the program was recorded, there is a 37. 5% chance that it was targeted at adults. 37. 5% of the programs are targeted at adults. 37. 5% of the programs are recorded.

Answers

The conditional relative frequency presents the result of the survey that conveys information about the programming and the audience.

The best description of the value 0.357 in the table is; Given that the program was targeted at adults, there is a 37.5% chance that it was recorded.

Reasons:

The table is presented as follows;

[tex]\begin{tabular}{|c|c|c|c|}&Live&Recorded&Total\\Adult&0.625&0.375&1.0\\Children&0.5&0.5&1.0\\Total&\approx 0.583&\approx 0.417&1.0\end{array}\right][/tex]

Based on the given table, we have that the programs are categorized based on the intended audience.

Therefore, the 0.375, indicates that 37.5% of the program targeted at adults are recorded.

Therefore, the correct option is;

Given that the program was targeted at adults, there is a 37.5% chance that it was recorded.

Learn more about relative frequency table here:

https://brainly.com/question/8470699

https://brainly.com/question/3712144

Answer:

A

Step-by-step explanation:

its a

55.7 degrees is the same as 55 degrees _____' 12"

Answers

Answer:

16

Step-by-step explanation:

Given is a degree in decimals as 55.27 degrees

But normally in degrees, we use for part of degrees minutes and seconds

60 seconds make one minute and 60 minutes make one degree.

Here 55 degrees would be the same

But part degree 0.27 = 27/100

If we want to convert this into minutes multiply by 60

No of minutes =

1/5 minutes = 12 seconds

Hence 55.27 = 55 deg 16 min and 12 seconds

The Missing number in the middle is 16

TI
Assessment
Vhich table of values can be used to graph the function y = - 4x +3?
x
y
-1
-1
0
3
1
7
2
11
X
y
3
O
-1
-9
-1
7
1
3
15
x
0
1
3
-1
-5
-9
2
3
3
X
Y
3
7
11
15
3
or False
function's graph may include solutions that do not appear in its table of

Answers

Answer:

B, y=X. Hope it works

Step-by-step explanation:

8. Select all the expressions that represent "10% more than x."
A. 10 + x
B. 0.10 + x
C. 0.1x + x
D. 0.1x + 10
E. 1.1x
F. X(1 + 0.1)

Answers

Answer:

B

Step-by-step explanation:

10/100 = /0.1. it should be more than x so add x to it to be 0.1+X

3 hours = minutes

2 hours 25 minutes. =. minutes ​

Answers

Answer:

180, 145

Step-by-step explanation:

There are 60 minutes in an hour, so we do 3*60=180 for the first one.

For the second one, we first find the minutes in 2 hours, which is 2*60=120. We add 120+25 and get 45.

Is it a expression 3x - 7

Answers

Answer:

It’s an expression.

Step-by-step explanation:

An expression is technically an equation but without the answer.

Answer:

yes

Step-by-step explanation:

The difference between an equation and an expression is that an equation as an equals sign. An equation shows that 2 expressions are equal to each other.

Expression:

[tex]3x-7[/tex]

Equation:

[tex]3x-7=5y[/tex]

Please help quick ..

What distance was an object moved by a force of 35 N if the work was 665 joules?

19m

23,275m

630m

22m

Answers

Answer:

19m, A

Step-by-step explanation:

Work = Force x distance

so rearrange to get:

distance = Work ÷ Force

distance = 665÷35

distance = 19m

NEED HELP ASAP WILL GIVE BRAINLIESTfor which values of x does each expression make sense?sqrt x+5

Answers

Answer:

can I see a picture? so I can try & help u

Answer:

x≥-5

Step-by-step explanation:

Angle a and angle b are supplementary angles. if measure angle A=(2x-14)degree and m angle B= (3x-6) degree, then find measure of angle A

Answers

we have: ∠A + ∠B = 90°

<=> (2x-14) + (3x-6) = 90° <=> 2x - 14 + 3x - 6 = 90°

<=> 5x + 20 = 90°

<=> 5x = 70°

<=> x = 14°

So: ∠A = 2x - 14 = 2.14 - 14 = 14°

Ok done. Thank to me :>

Pls answer these two questions

Answers

Answer:8 and 22

Step-by-step explanatio

Plzzzz help meeeeee plzzzzz

Answers

Answer:

i need points sorry

Step-by-step explanation:

90% of _______ is 18.

Answers

90% of 20 is 18
P/s: 18/90% = 20
Ok done. Thank to me :>

Can the distributive property be used to rewrite
4x (6 - 3)?

Answers

Answer:

12x

Step-by-step explanation:

cuz i said so

please help me!


ty :)

Answers

Answer:

y-2 = 5(x-3)

Step-by-step explanation:

-

Hope that helps

What is the equation for the line in slope-intercept form

Answers

The equation for slope intercept form is y = mx + b.

An example would be y = 3x + 4 or y = -2/5x - 4

HELPP!! Can someone tell me what this expanded form is as a decimal??
(1 x 100) + (9 x 10) + (6 x 1) + (8x1/10) + (8 x 1/100)

Answers

196.88

Hope this helps!
Brainliest is much appreciated!

3. Using the number line below, list the following numbers in increasing order:
1.1, -1.9, .4, -.6

Answers

-1.9, -.6, .4, 1.1 IF i’m not wrong

HELP PLEASE IS IMPORTANT!
Solve the equation by using the Quadratic Formula.
2x^2 =9x-5

Answers

I hope this can help :)

Jackson’s rectangular bedroom has an area of 90 square feet. The area of his bedroom is 9 times that of his rectangular closet. If the closet is 2 feet wide. What is it’s length?

Answers

Answer:

Im pretty sure the answer is 5.

Step-by-step explanation:

ASAP help 50 points Please hurry

Answers

Answer:

Step-by-step explanation:

Y=7

Let it be x

[tex]\\ \sf\longmapsto \dfrac{150}{x}=\dfrac{150+150}{280}[/tex]

[tex]\\ \sf\longmapsto \dfrac{150}{x}=\dfrac{300}{280}[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{x}=\dfrac{2}{280}[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{x}=\dfrac{1}{140}[/tex]

[tex]\\ \sf\longmapsto x=140ft[/tex]

Solve the following system: y = x 3 3x y = 19 (7, 4) (â’4, 7) (4, 7) (4, â’7).

Answers

The correct option is C. (4,7).

Given equations,

[tex]y=x+3....(1)\\3x+y=19....(2)[/tex]

We have to solve the equations.

From equation 1 put the value of y in equation 2 we get,

[tex]3x+x+3=19\\4x=16\\x=4\\[/tex]

Now putting the value of x in equation 1 we get,

[tex]y=4+3\\y=7[/tex]

Hence the required solution of the above equations is (4,7).

For more details on equation in two variables follow the link:

https://brainly.com/question/10824691

The altitudes of each triangle are drawn. Which of the triangles has an orthocenter on the exterior of the triangle?

Answers

Answer:

the second triangle

Step-by-step explanation:

because the point of intersection is out the triangle

Could someone please solve this compound inequality?

Answers

[tex]\large\mathcal\red{Answer✓}[/tex]

Ans :- E...

I'm gonna go with answer choice B

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