1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
exis [7]
4 years ago
15

HELP PLZ

Mathematics
2 answers:
Alexxandr [17]4 years ago
7 0

Answer:

x=\frac{-7-\sqrt{17}}{2}\textrm{ or }x=\frac{-7+\sqrt{17}}{2}

Step-by-step explanation:

Given:

The equation is given as:

x^2=-7x-8

Rearrange the above equation in standard quadratic equation of the form ax^2+bx+c=0

Adding 7x + 8 on both sides, we get

x^2+7x+8=0

Here, a=1,b=7,c=8

Now, we solve this using quadratic formula,

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\x=\frac{-7\pm \sqrt{7^2-4(1)(8)}}{2(1)}\\x=\frac{-7\pm \sqrt{49-32}}{2}\\x=\frac{-7\pm \sqrt{17}}{2}\\\\\\\therefore x=\frac{-7-\sqrt{17}}{2}\textrm{ or }x=\frac{-7+\sqrt{17}}{2}

iVinArrow [24]4 years ago
3 0

Answer:  option D.

Step-by-step explanation:got a 100 on it

You might be interested in
What's this I don't get it
Fantom [35]
41580 i think so hope i can help

3 0
3 years ago
Sofia makes and sells stuffed toys. She uses special fabric to cover a foam
valkas [14]

Answer:

384 square cm

Step-by-step explanation:

Fabric used will be equal to the total surface of the cubical block.

fabric \: used \\  = 6 {side}^{2}  \\ = 6 \times  {8}^{2}   \\  = 6 \times 64 \\  = 384 \:  {cm}^{2}  \\

8 0
3 years ago
marthas momis making party bags for all her geusts. She has 24 green gumballs.And 33 blue gumballs is she splits them evenly bet
olya-2409 [2.1K]
She can make 8 bags I️ think not sure thi
7 0
4 years ago
Write an equation. Let x be the unknown number<br> sixteen is 18 less than twice a number.
svlad2 [7]

Answer:

17

Step-by-step explanation:

Let the number be x

16 = 2x - 18

Add 18 to both sides

16+18 = 2x

2x = 34

Divide both sides by 2

x = 34/2

x = 17

I hope this was helpful, please mark as brainliest

7 0
3 years ago
The batteries of 150 MP3 players were tested to see if they were
Bas_tet [7]

Answer:

The estimate of the population proportion of defective battery is 0.1333.

Step-by-step explanation:

Estimate of the population proportion of defective battery:

The estimate of the population proportion is the sample proportion.

Sample proportion:

Number of desired outcomes divided by the number of total outcomes.

Proportion of defective battery:

20 defective out of 150. Thus:

p = \frac{20}{150} = 0.1333

The estimate of the population proportion of defective battery is 0.1333.

7 0
4 years ago
Other questions:
  • FIND THE SINE AND COSINE OF 30 DEGREES.
    12·2 answers
  • Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o
    9·2 answers
  • I need help yall plss​
    9·1 answer
  • A coach pays $100.44 for 36 baseballs. What is the cost of each baseball?
    12·2 answers
  • Which is equivalent to 80^1/4x
    15·1 answer
  • Need help please...answer correctly ​
    6·2 answers
  • Find the unknown measure of the rectangle.<br> Area =28 square centimeters <br>Height =?
    13·2 answers
  • Which numbers are solutions to the inequality below check all that apply Negative 4X -19 greater than 33
    7·1 answer
  • Which of the following gives a valid reason for using the given solution method to solve the system of equations shown?
    12·1 answer
  • Please explain this to me.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!