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
Liono4ka [1.6K]
3 years ago
14

Solve. x² + 20x + 100 = 50

Mathematics
2 answers:
Katen [24]3 years ago
4 0
<span>x² + 20x + 100 = 50</span>


x = −10 ± 5√2



tankabanditka [31]3 years ago
3 0

Solve. x²+ 20x + 100 = 50

Subtracting 50 from both sides

x^{2} +20x+100-50=50-50

x^{2} +20x+50=0

To solve the quadratic equation, let us use quadratic formula

For, ax^{2} +bx+c=0 , x=\frac{-b+-\sqrt{b^{2}-4ac}}{2a}

So, a=1, b=20, c=50

So, we get,

x=\frac{-20+-\sqrt{20^{2}-4*1*50}}{2*1}

x=\frac{-20+-\sqrt{400-200}}{2}

x=\frac{-20+-\sqrt{200}}{2}

x=\frac{-20+-10\sqrt{2}}{2}

x=\frac{-10+-5\sqrt{2}}{1}

x=-10+-5\sqrt{2}

Option(a) Answer

So, x=-10+5\sqrt{2}

or, x=-10-5\sqrt{2}

You might be interested in
Mike makes 4 dozen cookies. He brings 75% of them for a party at his school. How many did he bring?
baherus [9]

Answer:

He brought 3 dozen cookies

She ate \frac{2}{5} of the bag of Doritos

She read 25 books

Step-by-step explanation:

∵ Mike makes 4 dozen cookies

∵ He brings 75% of them for a party at his school

- Multiply 75% by 4

∵ 75% = \frac{75}{100}=\frac{3}{4}

∴ He brought = \frac{3}{4} × 4

∴ He brought = 3

He brought 3 dozen cookies

∵ Sam bought a bag of Doritos

∵ She ate only 40% of them

∵ 40% = \frac{40}{100}=\frac{2}{5}

∴ She ate = \frac{2}{5} × 1

∴ She ate = \frac{2}{5}

She ate  \frac{2}{5} of the bag of Doritos

∵ Jamie took 50 books from the library

∵ She only read half of her whole stack

- Multiply half by 50

∴ She read = \frac{1}{2} × 50

∴ She read = 25

She read 25 books

3 0
3 years ago
Pls help on #9 ASAP. thank you. I’ll give u as much points as i can ♡
Alinara [238K]
A. X> lobsters 
7 + x <= 18
X <= 11 lovsters. 

B. (7+3+10)
x= additional lobsters 
10 + x <= 24 
x<= 14 lobsters

C. 24/4 = 6 lobsters

Hope this helps.

6 0
3 years ago
Read 2 more answers
Which types of reasons are not valid in a mathematical proof?
bulgar [2K]
It's definitely A, gotta be.
5 0
3 years ago
Read 2 more answers
Does this graph show a function? Explain how you know.
Serggg [28]

Answer:

The answer is C.

Step-by-step explanation:

No because the graph fails the vertical line test.

5 0
3 years ago
How would i etimate the first digit of the quotient
Sergio039 [100]
first you have to look to the right of that number .check if it is more than 5. if it is ,than add one to the first digit in the quotient. all the other numbers will turn to zeroes.
6 0
3 years ago
Other questions:
  • The total amount of silver produced in the world in 2015 was 886.7 million ounces. What percent was produced by the United State
    10·1 answer
  • 12 + 36 /3 × 4 + 300
    11·1 answer
  • Help me please ASAP, thanks!
    9·2 answers
  • HELP ME !!!!! <br> Help me please !!!!
    8·1 answer
  • If a right triangle has a hypotenuse of length 100 units and one leg of length 60 units, what is the length of the other leg?
    10·2 answers
  • Converting unit rates 25 hours = blank seconds
    14·1 answer
  • What is the congruence correspondence, if any, that will not prove the given triangles congruent?
    7·1 answer
  • Pleaseeeeeeee helppppppppppppppppppppppppppppp
    14·1 answer
  • Is the relation below a function?<br> -3<br> -1<br> -1<br> 3<br> у<br> 0<br> 1<br> 2<br> 3
    15·2 answers
  • Translate the sentence into an inequality.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!