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
m_a_m_a [10]
3 years ago
10

Solve x2 = 12x - 15 by completing the square. Which is the solution set of the equation?

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
8 0

Answer:

(6-√21,  6+√21)

Step-by-step explanation:

x^2 - 12x = -15

(x - 6)^2 - 36 = -15

(x - 6)^2 = 21

x - 6 = ± √21

x = 6  ± √21

You might be interested in
Select the expression that is equal to (-2x +9) – (3x – 4).
Anna [14]

Answer:

C

Step-by-step explanation:

(-2x+9-3x-4)

-2x-3x+9-4

-5x+5

3 0
2 years ago
Plz help me someone!
adoni [48]

Answer:

m+5nx(9-p)-6-2r

Step-by-step explanation:

here you go

4 0
3 years ago
Read 2 more answers
I really need the answers to these cuz they'll make or break my grade
MrMuchimi

Answer:

whats the question? its a little blurry and hard to see

Step-by-step explanation:

8 0
2 years ago
What is the angle of rotation of the minute hand of a clock moving from 6:10 to 7:00?
igomit [66]
Because the movement of the minute han of a clock is clockwise ↓, then the angle of rotation will be negative.

1) we calculate the number of minutes from 6:10 to 7:00

number of minutes=7:00-6:10=6:60 - 6:10=50 minutes.

2)
We know that:
60 minutes of a clock have turned -360º
Then:

60 minutes of a clock------------------------- -360º
50 minutes of a clock-------------------------      x

x=(50 minutes of a clock * (-360º))/60 minutes of a clock=-300º


Answer:  A. -300º
 
5 0
3 years ago
Read 2 more answers
Solve an equation for one variable
AysviL [449]
To solve an equation for one variable, we will utilize PEMDAS ( parentheses, exponents, multiplication/division, add/subtract) but backwards. So we will first add/subtract any numbers to the other side to get the variable by itself. We will then divide/multiply any numbers to get the variable by itself.
7 0
2 years ago
Other questions:
  • Write the following word names as decimals. a. three hundredths b. forty-two hundredths c. five tenths d. fifty-two thousandths
    14·2 answers
  • There are 278 houses in Hannah's neighborhood. She collected a total of $780 from her neighbors to donate for a local charity. H
    7·2 answers
  • A standard number cube is tossed find p(less than 3 or odd)
    14·1 answer
  • What is 6,708 rounded to the nearest ten
    5·2 answers
  • What is the initial value of the equation shown? y = −7x − 6
    8·2 answers
  • What is the standard form of this function? f(x) = -(x − 4)2 + 2 A. f(x) = -x2 + 4x − 30 B. f(x) = x2 + 8x − 14 C. f(x) = -x2 +
    7·2 answers
  • Help me now i taking a quiz
    12·2 answers
  • Solve: <br><br> 3 ÷ 1/6<br><br> Please help!
    8·2 answers
  • What is another way to write the equation 3(1.25)+3(2.00)=9.75
    12·1 answer
  • I don’t understand these 2 questions. thank you.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!