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
garri49 [273]
3 years ago
14

x^2-8x+15=0 solve the equation by completing the square. Round your solutions to the nearest hundredth, if necessary.

Mathematics
1 answer:
zaharov [31]3 years ago
7 0

Answer:

x = 3, 5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients/Degrees
  • Standard Form: ax² + bx + c = 0
  • Multiple Roots
  • Factoring
  • Completing the Square: -b/(2a)

Step-by-step explanation:

<u>Step 1: Define</u>

x² - 8x + 15 = 0

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Subtraction Property of Equality] Subtract 15 on both sides:                     x² - 8x = -15
  2. Complete the Square [Addition Property of Equality]:                                 x² - 8x + 16 = -15 + 16
  3. [Complete the Square] Simplify:                                                                   (x - 4)² = 1
  4. [Equality Property] Square root both sides:                                                  x - 4 = ±1
  5. [Addition Property of Equality] Add 4 on both sides:                                   x = 4 ± 1
  6. Evaluate:                                                                                                          x = 3, 5
You might be interested in
Will mark brainliest
emmasim [6.3K]
Since line t is a transversal line all angle which are perpendicular with 63 will equal to the same value (63) and also line m is a straight line where it’s total will be 180

So,
3x + 2x + 63 = 180
5x + 63 = 180
5x = 180 - 63
5x = 117
Divide by 5 throughout
X = 23.4degrees
4 0
2 years ago
Read 2 more answers
The difference of 7 and the product of 4 and a is 11
BlackZzzverrR [31]
Product of 4 and a number translates to 4x because the word product means multiplication.
We then need to subtract one from that which would be 4x - 1.
The word is translates to "equals" so 4x - 1 = 11 is the translation of the whole problem.

Now solve that equation.
4x - 1 = 11
1st add +1 +1
2nd simplify 4x = 12
3rd divide. 4 4
x = 3
3 0
3 years ago
Read 2 more answers
What is the amplitude of the graph below
Kay [80]

The amplitude is 3

for a sine graph, the amplitude is the distance up or down from the midway point. The equation to find the amplitude is (max-min) / 2.

(3 - (-3)) / 2 = 3

8 0
3 years ago
Mato is making a leather belt inlaid with beads. On the first day there were b beads on the belt. On
kompoz [17]

Answer:

6

Step-by-step explanation:

On the fourth day, there were b^3 beads and 216 beads on the belt, which means b^3 = 216. Taking the cube root of both sides, we have b = 6, which means there were 6 beads on the belt on the first day.

3 0
3 years ago
I Need help with this question
kykrilka [37]

Answer:

600

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • I am thinking of a number. One half is a third of my number. What is my number?
    12·1 answer
  • Write the phrase as an algebraic expression 6 less than number times 11
    8·1 answer
  • What is the answer to 5 and 3/4 - 2 1/4
    12·2 answers
  • Rule for adding integers with different signs
    5·2 answers
  • 3 If a leaky faucet drips one ounce ofwater per minute, approximately many gallons per day would that be?
    6·1 answer
  • Is the correspondence described below a function? Explain your reasoning.
    13·1 answer
  • Multiply the polynomials (7x^2+9x+7)(9x-4)
    10·2 answers
  • What is the solution to 5 times a number, n, is less than 65?
    12·2 answers
  • 214 g = ? kg please help
    12·2 answers
  • Write a rule that Linda can use to figure out how many cups of chocolate she needs for any number of cups of cream when making S
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!