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
VARVARA [1.3K]
3 years ago
10

Rewrite the equation by completing the square. f (x) = x^2 + 20x - 86

Mathematics
1 answer:
9966 [12]3 years ago
7 0

Answer:

f(x) = (x+10)^2 - 86

Step-by-step explanation:

  1. f(x) = x^2 + 20x - 86
  2. f(x) = x^2 + 20x + 100 - 86 (because (20/2)^2 = 100)
  3. f(x) = (x+10)^2 - 86

Completing the square means you do (b/2)^2 where b is: a^2x + bx + c.

You might be interested in
A ladder is leaning against a vertical wall which is 5m high. The top of the ladder slides all the way down the wall so that the
Lynna [10]

Answer:

Do using Pythagoras theorem... Also before doing a question of height and distance always try to make the figure

Step-by-step explanation:

Use the two triangles ABC and ABD to first get the base and find the height of the ladder

7 0
3 years ago
Jorges printer can print out 48 pages in 0.5 hour. How many pages can he print in one hour?
Norma-Jean [14]
You would need to do 48×2=96 pages an hour .it would be 96 pages an hour because for half an hour it is 48 pages so you need to do times two to make it one full hour.i hope this helps if you dont get how I explain it please tell me or if you already have an answer
8 0
3 years ago
Read 2 more answers
A rectangle is inside a circle with a 5 cm radius.
o-na [289]

Answer:

Do it your self

Step-by-step explanation:

Gross

8 0
3 years ago
A rectangle has a width of 3 units and a length of 4 units. Nancy needs to increase both the length and the width of the rectang
yarga [219]

Step-by-step explanation:

The length of a rectangle, l = 3 units

The breadth of a rectangle, b = 4 units

Nancy needs to increase both the length and the width of the rectangle by 2 units.

The area of a rectangle is given by

A = length(l) × breadth(b)

Here,

A = 3 × 4

= 12 unit²

If both length and width of the rectangle increase by 2 units,

New length = (4+2) = 6 units

New width = (3+2) = 5 units

New area = 6 × 5 = 30 unit²

Hence, new area becomes 30 unit².

3 0
3 years ago
What is the solution of the system? Use any method.<br><br> 3x + 2y = 7<br> y = –3x + 11
Gnom [1K]

Answer:

(5,-4)

Step-by-step explanation:

SOLVE BY SUBSTITUTION:

STEP 1: Replace all occurrences of y with -3x+11 in each equation.

-3x+22=7\\y=-3x+11

STEP 2: Solve for x in the first equation.

x=5\\y=-3x+11

STEP 3: Replace all occurrences of x with 5 in each equation.

y=-4\\x=5

6 0
2 years ago
Other questions:
  • A research team conducted a critical study, and using the data they gathered in their random experiment, a 95% confidence interv
    11·1 answer
  • 6 1/2+n=12. please explain for me I dunno how to do this.
    5·1 answer
  • First piece is 5.2 cm the second piece must be 1.5 times at long as the first
    9·1 answer
  • Which statement describes the solution to the system of equations?
    12·1 answer
  • 19. During a 2 3/4 hour assembly, each speaker spoke for 1/4 of an hour. How many speakers were there?​
    7·2 answers
  • Franco is solving a system of linear equations algebraically. He find that there
    12·1 answer
  • What is the value of x that makes the statement true?<br><br> 9x - 22 = 11x - 54<br><br> x =
    10·1 answer
  • The table and the Circle Chart shown display the percentage of dogs in seven different groups of dog breeds in a dog competition
    10·1 answer
  • What is the mZQPT? <br><br>P Q R S T <br>​
    6·1 answer
  • What is meaning of irrational exponents.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!