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
ser-zykov [4K]
1 year ago
9

X^2 - 10x - 20 = 0, which number would have to be added to "complete the square"?

Mathematics
2 answers:
nikdorinn [45]1 year ago
4 0

Answer:

25 to both sides

Step-by-step explanation:

Group x² and x terms

(x² - 10x ) - 20

complete the square

(x² - 10x +25 ) -20 -25

(x-5)² -45

Airida [17]1 year ago
3 0

Answer:

45

Step-by-step explanation:

When you're completing the square you're adding (b/2)^2 which in this case is (-5)^2 or 25. This is because when you rewrite it as a square binomial you write it in the form (x+(b/2))^2 which is going to result in x^2+b+(b/2)^2. Since you need to reach 25 you need to add 45 since the last value is at -20.

You might be interested in
I need help urgently with this question​
andrew-mc [135]

Answer: x> -1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What the answer to 1 1?
patriot [66]
The answer to the colour 11 is life.
8 0
3 years ago
There are 96 strawberries in a basket. Each of the 12 children received an equal number of strawberries. Which equation gives s,
MAXImum [283]

Answer:

B

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Why is 4 called a constant?<br> 2y²-3x+4
cricket20 [7]
Because its value wont change


Mark brainliest please


Hope this helps you
5 0
2 years ago
What is the magnitude of force required to accelerate a car
Drupady [299]

Answer:

8.71 x 10^3N - C

Step-by-step explanation:

Force = mass x acceleration

mass = 1.7 x 10^3 and acceleration = 4.75m/s^2

Force = 1.7 x 10^3 x 4.75 = 8075N = 8.71 x 10^3N

7 0
3 years ago
Read 2 more answers
Other questions:
  • Can you match the teachers comments to the definitions?
    12·2 answers
  • PLEASE help with these math questions
    12·2 answers
  • Consider the graph of the linear equation 2x-5y=10. What is the x intercept?What is the y intercept?What is the slope?
    12·1 answer
  • A bag contains 120 marbles Some are red and the rest are black. There are 19 red marbles for every black marble. How many black
    7·1 answer
  • If 2 inches is 50 miles then how many miles is 9.2 inches
    9·2 answers
  • Does anyone know what topic this is ?
    10·1 answer
  • 25 girls and 20 boys are participating in the march past for sports day. How many kinds of equal rows can they make so that each
    6·2 answers
  • Which statement is true about CR and DS?
    9·1 answer
  • Which would be the best method to use to solve the following equation. Explain your reasoning.
    11·1 answer
  • There 7 ducklings .they sleep in 1 large nest .write and solve an equation that shows how many ducklings sleep in the nest
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!