Solve the following quadratic equation by finding the value of x:

x^2 + 8x + 7= 0

(include solving steps please)

Answers

Answer 1
use the quadratic formula: (-b±√(b²-4ac))/(2a)

a=1
b=8
c=7

(-8±√(8²-4x1x7))/(2x1)

x= -1
x= -7

Related Questions

Use the table to find the relationship between the two quantities. A 2-column table with 4 rows. Column 1 is labeled x with entries 1, 2, 3, 4. Column 2 is labeled y with entries 11, 22, 33, 44. What relationship between the quantities is shown in the table? The relationship between quantities is +10. The relationship between quantities is ×11. The relationship between quantities is – 30. The relationship between quantities is + 20.

Answers

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

i will give brainliest


2 (x + 3 )= -x⁣

Answers

Answer:

-2 =x

Step-by-step explanation:

2 (x + 3 )= -x⁣

Distribute the 2

2x+6 = -x

Subtract 2x from each side

2x+6-2x = -x-2x

6 = -3x

Divide each side by -3

6/-3 = -3x/-3

-2 =x

Answer:

x = -2

Step-by-step explanation:

2 (x + 3) = -x

2x + 6 = -x

    - 6     -6

2x = -x - 6

+x    + x

3x = -6

---    ----

3      3

x = -2

I need ur help with this just two questions. lets see who's good at this. n ofc in return ill brainlist.

market stall holder bought a variety of coloured 'hoodies to sell. Each hoodie costs the stall holder $20 and she intends to sell them to the public at a mark up of 65%
write the percentage mark up value as:
1) fraction in simplest form
2) decimal ​

Answers

Answer:

20 x 0.65 = 13

20 + 13 = 33

20 x 65/100 = 13

Answer:

variety of coloured 'hoodies to sell. Each hoodie costs the stall holder $20 and she intends to sell them to the public at a mark up of 65% write the percentage mark up value as: 1) fraction in simplest form ... an acute angle lies in the range. 0 \leqslant \theta ... an angle that measures 65° i

Step-by-step explanation:

How do you solve this equation: 80x =
11100
Divide by 11100 on both sides
Multiply by 80 on both sides
Multiply by 11100 on both sides
Divide by 80 on both sides

Answers

Answer:

Divide by 80 on both sides

PLEASE HELP IN ALGEBRA, LAST QUESTION!!

Answers

Step by step explanation:

Question 1:

Let's simplify step-by-step.

−3x2+6x+5x2−2

=−3x2+6x+5x2+−2

Combine Like Terms:

=−3x2+6x+5x2+−2

=(−3x2+5x2)+(6x)+(−2)

=2x2+6x+−2

Find the domain of the following graph​

Answers

Answer:

-5,-4,-3,-2,1,0,1,2

Step-by-step explanation:

Domain are all the x values. I believe this is the answer, however the open bracket o is bit confusing, if this it not correct(still should be)try -5,and forever going. But yeah im like 99% sure im right

Prove that √sec²

Answers

Given:

Consider the given statement is

[tex]\sqrt{\sec^2\theta+\text{cosec}^2\theta}=\tan \theta+\cot \theta[/tex]

To prove:

The given statement.

Solution:

We have,

[tex]\sqrt{\sec^2\theta+\text{cosec}^2\theta}=\tan \theta+\cot \theta[/tex]

Taking LHS, we get

[tex]LHS=\sqrt{\sec^2\theta+\text{cosec}^2\theta}[/tex]

[tex]LHS=\sqrt{\dfrac{1}{\cos^2\theta}+\dfrac{1}{\sin^2\theta}}[/tex]

[tex]LHS=\sqrt{\dfrac{\sin^2\theta+\cos^2\theta}{\sin^2\theta\cos^2\theta}}[/tex]

[tex]LHS=\sqrt{\dfrac{1}{\sin^2\theta\cos^2\theta}}[/tex]            [tex][\because \sin^2\theta+\cos^2\theta=1][/tex]

[tex]LHS=\dfrac{1}{\sin\theta\cos\theta}[/tex]

[tex]LHS=\dfrac{\sin^2\theta+\cos^2\theta}{\sin\theta\cos\theta}[/tex]            [tex][\because \sin^2\theta+\cos^2\theta=1][/tex]

[tex]LHS=\dfrac{\sin^2\theta}{\sin\theta\cos\theta}+\dfrac{\cos^2\theta}{\sin\theta\cos\theta}[/tex]

[tex]LHS=\dfrac{\sin\theta}{\cos\theta}+\dfrac{\cos\theta}{\sin\theta}[/tex]

[tex]LHS=\tan \theta+\cot \theta[/tex]

[tex]LHS=RHS[/tex]

Hence proved.

A line segment has endpoints at A(-1, - 8) and B(5, -4). Which of the following are the coordinates of the
midpoint of AB??

Answers

Answer:

(2, -6)

Step-by-step explanation:

(2,-6) because that's the middle of you count.

Help ASAP!!!!!!
A school of poetry that advocates using everyday language to capture and present
images in precise, brief poems that suggest, rather than enforce, interpretation is...

Answers

Answer:  Imagism is a school of poetry that advocates using everyday language to capture and present images in precise, brief poems that suggest, rather than enforce, interpretation

Find the zeros of the function.
Enter the solutions from least to greatest.
g(x) = -10x2 + 490
lesser =
greater x =

Answers

Answer:

Lesser = -490

Greater x = 100x

Step-by-step explanation:

The zeros is basically the opposite numbers to make the equation equal to 0.

We have -10x^2(I believe it's a power)

and we have + 490

so,

-10x^2 = -100x

So the opposites to make those is:

+ 100x because, -100x + 100x = 0

and -490 because, 490 - 490 = 0.

You spend $56 dollars on food and beverages. You spent $18 more on food than on beverages,
How much did yo spend on beverages?
How much did you spend on food?

Answers

You would spend $20 on food and $38 on beverages.

I need help! I will give brainliest!

Answers

Answer:

2nd linear equation represents the graph

Step-by-step explanation:

Answer: C

Step-by-step explanation:

Kaytelyn makes $10 an hour and receives weekly bonus of $25. How many hours dose she need to work this week to make more than $250

Answers

Answer:

She Has To Work For Around 23 Hours.

How I Found The Answer:

10 x 23 = 230 Dollars

230 + 25 = 255 Dollars

Tiles with the letters A, B, C, D, E, F, G, and H written on them are placed in a bag. Malik draws out one letter at random. Which statements about the situation are true? Check all that apply.

The number of possible outcomes is 8.

The probability of drawing the tile with E written on it is 1/4

P(vowel) = 1/4

P(vowel) + P(consonant) does not = 1

Choosing one letter at random is a simple event.​

Answers

Answer:

P(vowel) = [tex]\frac{1}{4}[/tex]

Choosing one letter at random is a simple event.​

Step-by-step explanation:

P(vowel) =  [tex]\frac{1}{4}[/tex]

This is because there are 2 vowels so the probability [tex]\frac{2}{8}[/tex] is  which can be simplified to [tex]\frac{1}{4}[/tex] .

Moreover, Choosing one letter at random is a simple event.

The definition of a simple event is one that can only happen in one way, or in other words, it has a single outcome.

Malik's probability of drawing one letter at random is 1/4.

Probability calculation:

P (vowel) = [tex]\bold{ \frac{1}{4}}[/tex] It's good to select one letter at random. ​P(vowel)    = [tex]\bold{ \frac{1}{4}}[/tex]Since there are two vowels, the probability is  [tex]\bold{ \frac{2}{8}}[/tex], is equal  [tex]\bold{ \frac{1}{4}}[/tex].Furthermore, picking one letter at random is an easy procedure.A simple event is one that can only happen one way or has just one conclusion.

Find out more about the probability here:

brainly.com/question/11234923

Ken will flip a fair coin and then randomly choose one of three colored cards. The possible outcomes are shown below. What is the probability that tails will turn up and that he will choose a red card?

Answers

Answer:

20% Chance he will choose a red card.

Answer: 50% chance that he will flip a tails and

33.3% chance of picking red

Step-by-step explanation:

-2(v - 2) = -3 – 2v​

Answers

Answer:

no solution

Step-by-step explanation:

Given

- 2(v - 2) = - 3 - 2v ← distribute left side

- 2v + 4 = - 3 - 2v ( subtract 4 from both sides )

- 2v = - 7 - 2v ( add 2v to both sides )

0 = - 7 ← not possible

This indicates the equation has no solution

find the slope in the graph attached



ty :P

Answers

Answer:

[tex]\displaystyle m=\frac{-2}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Coordinates (x, y)Reading a Cartesian planeSlope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph

Point (-3, 1)

Point (3, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]:                                                            [tex]\displaystyle m=\frac{-3-1}{3+3}[/tex][Fraction] Subtract/Add:                                                                                 [tex]\displaystyle m=\frac{-4}{6}[/tex][Fraction] Simplify:                                                                                          [tex]\displaystyle m=\frac{-2}{3}[/tex]

Can someone help me with this problem? 3 + (-7 + y)

Answers

Answer:

−4+y

Step-by-step explanation:

3+(−7+y)

Subtract 7 from 3 to get −4.

−4+y

y = x^2 + 8x + 15 find the y-intercept

Answers

Answer:

15

Step-by-step explanation:

To find the y-intercept, just set the x value to 0:

[tex]y=0^2+0x+15=15[/tex]

Someone PlzZzZzZ Help MEeEeE

Answers

Answer:

y - 1 ≤ 0.5

Step-by-step explanation:

(Smart people will get this) #10

Answers

Answer:

OH OKK NICE TELLING ME

Step-by-step explanation:

Find the slope between the points (-1,5), (4, 8)​

Answers

Answer:

Are you sure thats all you are given?

What are the solutions to (3x - 2) (4x + 1) = 0?​

Answers

9514 1404 393

Answer:

  x = 2/3, -1/4

Step-by-step explanation:

The zero product rule tells you a product will be zero only if one or more factors is zero. The solutions to this equation are the values of x that make one or the other of the factors be zero.

  3x -2 = 0

  3x = 2

  x = 2/3 . . . . makes the first factor zero

__

  4x +1 = 0

  4x = -1

  x = -1/4 . . . . makes the second factor zero

__

The solutions are ...

  x = 2/3  or  x = -1/4

of the following set of data?
What is the mean absolute deviation
2 8 16
8 10 12
8
16
Pls I need help

Answers

Answer:

7.5

Step-by-step explanation:

mean= sum all/number of all

(2+8+6+8+6+8+10+12)/8=

60/8=7.5

Someone please helppppp!

Answers

Answer:

AB=24.5

Step-by-step explanation:

5x+7=7x

7=2x

x=3.5

7(3.5)=24.5

What is the y-intercept of y=5x-2

Answers

Answer:

the y intercept is -2

Step-by-step explanation:

the y intercept is always the value on the end

Answer slope-intercept form is y = mx+ b y = m x + b, where m m is the slope and b b is the y-intercept. y = mx +b y = m x + b Find the values of m m and b b using the form y = mx+b y = m x + b.

Step-by-step explanation:

29. You drop a handball from a height of 1 meter. Each curved path has 64% of
the height of the previous path.
a. Write a rule for the sequence using centimeters. The initial height is when n = 1.
b. What height will the ball reach at the top of the sixth path?

Answers

I think it’s A sorry if I’m wrong

PLEASE HELP ASAP Will MAKE BRAINLIST

Answers

Answer:

The second answer is correct

This is stumping me please help

Answers

Answer:

A) 8

Step-by-step explanation:

A. 8
Hope this helped

Simplify using the division rule
14,252
Trs

Answers

Answer:

2rs

Step-by-step explanation:

simplify- 2*7r^2s^2/7rs

r^2 divided by r^1=r^(2-1)=r^1=r

s^2 divided by s^1=s^(2-1)=s^1=s

canceling out 7 as it appears on both sides of the fraction line

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