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
Scrat [10]
3 years ago
10

If using the method of completing the square to solve the quadratic equation x 2 − 9 x − 8 = 0 x 2 −9x−8=0, which number would h

ave to be added to "complete the square"?
Mathematics
1 answer:
Stels [109]3 years ago
6 0

Answer:

Add 81/4 to both sides.

Step-by-step explanation:

x^2 − 9x − 8 = 0

x^2 - 9x = 8

Take the coefficient of the x term: -9

Divide by 2: -9/2

Square it: 81/4

Add 81/4 to both sides.

You might be interested in
Is 70 thousand written in standard form or word form ? Explain
Stolb23 [73]
<span>70 thousand is written in short word form, because its written as a combination of numbers and letters. Standard form would be to write the number easily using multiplication with 10. That woul be: 70000=7*10^4. It;s 10^4 because the decimal point has been 4 laces to the left to get the number to be 7. Word form can be obtain by writing the number using letters. Long word form is: seventy thousand. But because sevety is written with number (70), this is short word form of the number,</span>
5 0
3 years ago
-0)
Sphinxa [80]
30 because 25% minese 10
5 0
3 years ago
You have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. If the house circuit provides
Bess [88]
This problem can be solved by manipulating the formula for power, which is: P = VI. Where:

P = Power in watts
V= Voltage in volts
I = Current in amperes

Since we are already given the power and voltage, simple substitution can be done.

P = VI
3.5 watts = 120 volts * I
I = 3.5 / 120
I = 0.0292 Amperes or 29.2 milliAmperes

Therefore, the current through the bulb is 29.2mA
5 0
3 years ago
___% of $10 = $2<br> Please help me I can not figure it out <br> I need it please
kherson [118]

Answer:

20 :)

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
PLEASE I REALLY NEED THIS BY TODAY A parent donated 50 cups for the juice. Each cup can hold 500 ml of juice. What is the least
liberstina [14]

Answer:

it 25,000

Step-by-step explanation:

if u multiply 50x500 it will give u 25,000 hope this works

4 0
2 years ago
Other questions:
  • There is a book that is 8 inches long, 5 inches wide, and 2 inches thick what is the volume of the book?
    7·1 answer
  • Rename the number 120,000
    12·2 answers
  • Samantha and Luis are attempting to determine the average number of library books that seventh-grade students check out at
    6·1 answer
  • Chad's bedroom floor is 18 feet long and 13 feet wide. He has an area rug on his floor that is 2 feet long and 8 feet wide.
    12·1 answer
  • Ben rolls a wheel with a diameter of 1 meter through one complete revolution from point M to point P. About how far did Ben roll
    12·1 answer
  • The expression that is equal to -10(4x – 5).
    15·1 answer
  • Mrs. Jackson earned a $500 bonus for signing a one-year contract to work as a nurse. Her salary is $22 per hour. If her first we
    10·1 answer
  • Evaluate -8 × |2|.<br><br> A)-10<br> B)10<br> C)-16<br> D)16
    7·2 answers
  • Select ALL the true statements.
    15·1 answer
  • Help asap check picture
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!