-x²-8x-16=0
what is the solutions by solving by quadratic equations ​

Answers

Answer 1

Answer:

x = - 4

Step-by-step explanation:

Given

- x² - 8x - 16 = 0 ( multiply through by - 1 to clear the leading negative )

x² + 8x + 16 = 0 ← this is a perfect square

(x + 4)² = 0 ( take the square root of both sides )

x + 4 = 0 ( subtract 4 from both sides )

x = - 4


Related Questions

PLEASE HELP ME ASAP! ILL GIVE BRAINLEST

Answers

Answer:6(-4)

Step-by-step explanation:

Answer:

4(-6), 6(-4), 12(-2)

Step-by-step explanation:

Hi there!

A negative number times a positive number is a negative number. So, since -4 x 6 has one negative number, you can think of it as 4 x 6 and then add a minus sign after multiplying, so -4 x 6 is -24.

In multiplication, no matter which way the equation goes, the answer will always be the same ( 5 x 3 is the same as 3 x 5). Therefore, we are looking for another equation that will also equal -24.

4(-6) is the same because it is still one number that is a negative, and it still equals -24.

6(-4) is the same as well, it's just we're putting the parentheses around the -4 this time.

12 x 2 is 24, so 12(-2) is negative 24 (-24)

I hope this explanation helped you! I'd appreciate if you gave me Brainliest, rated my answer and gave it a Thanks! Have a great day!

Use the drop-down menus to complete the paragraph
proof showing that alternate interior angles are
congruent.
We know that lines a and b are parallel and that line c
is a transversal because that is given. We can tell that
angles 2 and 5 are congruent because
V angles are congruent. Angles 5 and
7 are congruent because
angles by
parallel lines cut by a transversal are congruent.
Therefore, angles 2 and 7 are congruent based on the

Answers

Answer:

vertical

corresponding

transitive property

Step-by-step explanation:

hope this helps you :)

What is the sum of the zeros of the equation (m-4)(3m-2)=0

Answers

Answer:

3m^2-14m-8

Step-by-step explanation:

(m-4)(3m-2)=?

m(3m-2) = 3m^2-2m

-4(3m-2) = -12m-8

3m^2-2m-12m-8

3m^2-14m-8

A phone company offers two monthly charge plans. In plan a there is no monthly fee, but the customer pays 8 cents per minute of use. In Plan B the customer pays a monthly fee of $2.40 and then an additional 7 cents per minute of use. For what amount of monthly phone use will plan a cost more than plan b? Use m for the number of minutes of phone use in a month and solve your inequality for

Answers

Answer:

[tex]m>2.40[/tex]

Step-by-step explanation:

Let m denotes the number of minutes of phone use in a month.

In plan a there is no monthly fee, but the customer pays 8 cents per minute of use.

Total cost of plan a = [tex]8m[/tex]

In Plan B the customer pays a monthly fee of $2.40 and then an additional 7 cents per minute of use.

Total cost of plan b = [tex]2.40+7m[/tex]

To find amount of monthly phone use for which plan a cost more than plan b, solve the inequality [tex]8m>2.40+7m[/tex].

[tex]8m>2.40+7m\\8m-7m>2.40\\m>2.40[/tex]

Asap
I need help please

Answers

Answer:

c

Step-by-step explanation:

14, What is the value of the expre
3(20 – x) =
Your answer

Answers

Answer:

= −3x + 60

Step-by-step explanation:

3(20−x)

=(3)(20+ −x)

=(3)(20) + (3)(−x)

=60 − 3x

= −3x + 60

Sorry, I'm Late.

Hope This Helps!

Please Mark Brainliest When You Can!

Correct answer will be awarded with brainliest answer

Answers

She bought five extra hours also 300 minutes


19. Mrs. Tyner tutors to earn additional money. For each person she tutors, she charges $15 for the first hour
then $10 for each additional hour. Ms. Starling was paid a total of $35 last Saturday. Which equation can be
used to determine h, the amount of hours Mrs. Tyner tutored on Saturday.

Answers

15+10h=15 aueiwnahakqan

Write equations of the horizontal and vertical lines that pass through (−5,−4).
Horizontal-
Vertical-

Answers

Answer:
Horizontal line:
y=-4
Vertical line:
x=-5

Explanation:
Equation of a horizontal line:
y=b
B is the y-intercept (the point on the line that crosses the y axis)

Equation of a vertical line:
x=d
D is the x-intercept (the point on the line that crosses the x axis)

To find the values of b and d, we just need to look at the coordinate and see what’s in place of the x and y variables.

(x,y)
(-5,-4)

-5 is the x coordinate and -4 is the y coordinate. Therefore,

y=-4
x=-5

I hope this helps! Please comment if you have any questions.

ASAP ASAP PLEASEEEEE! WILL GIVE BRAINLIST

Answers

It is the last one D

Answer:

A: -6r+6

Step-by-step explanation:

[tex]8-\left(6r+2\right)[/tex]

[tex]-(6r+2)=-6r+2[/tex]

[tex]=8-6r-2[/tex]

[tex]8-6r-2=-6r+6[/tex]

[tex]=-6r+6[/tex]

Please Solve
3/5 (2m-10)=2/3m+10

Answers

Answer:

m = 30

Step-by-step explanation:

3/5 (2m-10)=2/3m+10

Distribute

6/5 m - 6 = 2/3m +10

Subtract 2/3 m from each side

6/5 m - 2/3 m - 6 = 2/3m -2/3m +10

6/5 m -2/3m - 6 =  10

Add 6 to each side

6/5 m -2/3m - 6+6 =  10+6

6/5m -2/3m = 16

Get a common denominator of 15

18/15 m - 10/15 m  =16

8/15 m = 16

Multiply each side by 15/8

15/8 *8/15 m = 16*15/8

m = 30

Find the sum of the multiples of 9 from 1 to 300

Answers

Answer:

can you be more specific please.  

Step-by-step explanation:

Can anyone please help me

Answers

Answer:

y = 8 + 12x

Step-by-step explanation:

Step 1: Write equation

3x - 1/4y = -2

Step 2: Solve for y

Subtract 3x on both sides: -1/4y = -2 - 3xMultiply both sides by -4: y = -4(-2 - 3x)Distribute -4: y = 8 + 12x

I will mark BRAINLYLIST if correct plzzzz helppppp

Answers

Answer:

107

Step-by-step explanation:

it looks like a right angle

Answer:

The answer is 107 degrees.

Step-by-step explanation:

The sum of all the angle of a triangle must equal 180 degrees. That being said if you grab 180 and subract 44 and 29 from it you get 107 degrees. 107+44+29=180. If this did not equal 180 the answer would be wrong but since it does it is right.

value of 5/6 divided by 3/4?

Answers

Answer:

1 1/9

Step-by-step explanation:

Explain how to multiply two numbers with different signs.

Helpppp

Answers

Answer:

number 1. 6x6, number 2. 6*6, number 3. 6.6

Step-by-step explanation:

Which equation represents the graphed function?
A. y = -2x + 3
B. y = 2x + 3
C. y=1/2x+3
D. y=-1/2x+3

Answers

Answer:

y= - 2x+3

Step-by-step explanation:

3 is our start possition

the number before the x is the rise over run

so we would "rise" (vertical) 2 but since it has a - it will be going the oppisite direction then our run would be 1 going over horizenly 1 block

y= - 2x+3
Is the answer:3

The perimeter of a child's rectangular sandbox is 18 feet. Part A:if the length of the sandbox is one foot longer than the width, write an equation that can find the length and width of the sandbox. Part B:using your equation from part a, find the dimensions of the Childs sandbox. Show your work

Answers

Answer:

Length = 5 feet

Width = 4 feet

Step-by-step explanation:

Perimeter of the sandbox = 18 feet

Perimeter of a rectangle = 2(length + width)

the length of the sandbox is one foot longer than the width

Let

Width = x

length = x + 1

Perimeter of a rectangle = 2(length + width)

18 = 2{(x+1) + x}

18 = 2{x + 1 + x)

18 = 2(2x + 1)

18 = 4x + 2

4x = 18 - 2

4x = 16

Divide both sides by 4

x = 16/4

= 4

Width = x = 4 feet

length = x + 1

= 4 + 1

= 5 feet

The Chicago Cubs attendance is approximately 42,000 fans per game what will be their total attendance after 10 games?

Answers

Answer:

420,000

Step-by-step explanation:

Solve the quadratic equation given below by completing the square.
Round your answer to the nearest hundredth.
If there is more than one solution, separate them with commas.
x^2 - 2x - 12 = 0

Answers

Halijvjgigigfjcjcjcjcjcjgicudyxuci

Please help ill give brainlist

Answers

Answer:

c. m∠2 = m∠5

Step-by-step explanation:

We can check 1 by 1 and find the false one.

For answer A, measures 2 and 4 are vertical angles, which means they are equal, so that's not false.

For answer b, measures 4 and 8 are corresponding angles, since X and Y are parallel, so that's also not false.

For answer c, measures 2 and 5 are supplementary to each other, and since the transversal is not perpendicular to X nor Y, they are not equal, therefore, this is false, making that the answer.

For answer d, measure 2 and 6 are corresponding angles, so that's also not false.

Therefore, the answer must be c.



how can I put the problem into a sentence please help !

Answers

You can talk about the coordinates of each of the problems. For example, The graph states that on ...th day there was ... ounces of food. Therefore, [answer].

The dimension of a laying block is 6m ×4m×2m .find the total surface area of the block​

Answers

See attachment for math work and answer.

A rectangle in Quaderant 1 is transformed to produce a congruent rectangle in Quaderent 2. Which could describe the transformation.

Answers

Answer:

A translation

Step-by-step explanation:

The rectangle doesn't change, it just scoots over.

explain how using fraction strips with like denominators makes it possible to add fractions with unlike denominators.

Answers

Because you don’t have to change the fractions so that they have equal denominators which you need in order to add fractions

Fraction strips uses (least)  common denominators, thus splitting big fraction into sum with like denominators and thus making addition possible.

Fraction strips require three major steps.

1. Firstly convert the problem with modelling as fraction strips.

2. Find the common denominator which should be least of all.

3. Now calculate the sum on new converted fractions.

For example:

[tex]\begin{aligned}\dfrac{1}{2} + \dfrac{3}{4} &= \dfrac{1}{4} + \dfrac{1}{4} + \dfrac{3}{4}\\&= \dfrac{2}{4} + \dfrac{3}{4}\\&= \dfrac{5}{4} = \: Ans.\end{aligned}[/tex]

Learn more here:

https://brainly.com/question/22568

5x+18=7x-4 With Justify Steps

Answers

Answer:

x=11

Step-by-step explanation:

Let's solve your equation step-by-step.

Step 1: Subtract 7x from both sides.

Step 2: Subtract 18 from both sides.

Step 3: Divide both sides by -2.

therefore x=11

Answer:

x = 11

Step-by-step explanation:

5x+18=7x-4

    +4          +4

5x + 22 = 7x

-5x           -5x

22 = 2x

/2        /2

x = 11

Isolate the variable by dividing each side by factors that don't contain the variable.

what is 342+8837+377+3893+39845

Answers

The answer is 53294. You can also use a calculator

Answer:

53,294

Step-by-step explanation:

{(3, 2), (5, – 1), (6, 7), (3, – 8), (4, 2)} Which set of information is true about the relation shown?​

Answers

Answer: the second function

Step-by-step explanation:

For the functions f left parenthesis x right parenthesis equals 6 minus x squared and g left parenthesis x right parenthesis equals x squared plus 4 x minus 12​, find fplus​g, fminus​g, ​fg, and StartFraction f Over g EndFraction . Determine the domain for each function.

Answers

Answer:

Step-by-step explanation:

Given the functions

F(x) = 6-x²

G(x) = x²+4x-12

A) we are to find F(x)+g(x)

F(x)+G(x) = 6-x²+x²+4x-12

F(x)+G(x) = 6+0+4x-12

F(x)+G(x) = 4x+6-12

F(x)+G(x) = 4x-6

The domain of the function is the values of x for which the expression exists. The expression exists on all real interval i.e xER

F(x)-g(x) = 6-x²-(x²+4x-12)

F(x)-g(x) = 6-x²-x²-4x+12

F(x)-g(x) = 6-2x²+4x+12

F(x)-g(x) = -2x²+4x+6

The domain of the function is the values of x for which the expression exists. The expression exists on all real interval i.e xER

3) F(x)/G(x)

= 6-x²/x²+4x-12

The domain of the function is the values of x for which the expression exists. The expression exists on all real interval i.e xER

PLEASE HELP!! I'M VERY CONFUSED

Answers

See, when you have a fractional exponent, you can turn it into a square root. The 1/3 power is the same as the cubed root. As you can see in my example, I took the cubed root of 8 which is a perfect 2. I brought that to the outside.

Now this is the kind of tricky part. You have to break the exponents into 3rds. Turn the x^4 into x^3*x^1. The x^3 has a perfect cubed root of just x, now bring that out but keep the other x underneath the radical. Repeat this for the other exponents where it actually applies.

In the end, I brung all the perfect roots out and kept the rest underneath the radical. It turns out the two radicals are the same and they cancel. The 2’s also cancel. You’re stuck with:

xz^3
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