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
andrey2020 [161]
2 years ago
15

0=x^2+2x-11 solve by completing the square

Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
6 0

Answer:

Below in bold.

Step-by-step explanation:

x^2 + 2x- 11 = 0

x^2 + 2x = 11

x^2 + 2x + 1 = 11 + 1

(x + 1)^2 = 12

x + 1 = ±√ 12

x = -1  ± √12

= -4.464, 2.464 to the nearest thousandth.

You might be interested in
Solve using foil method (x+9)(x+9)
Fudgin [204]
X^2+9x+9x+81
x^2+18x+81
for factoring it
3 0
4 years ago
(Question is in the image)<br><br> please I really need help
weqwewe [10]

Answer:

c

Step-by-step explanation:

The period is 1 complete cycle of the wave, before repeating.

1 cycle is from - 6 to - 2 , then

period = 4  → c

7 0
3 years ago
A candidate for city council wants to determine how much support she has among the voters in her district by conducting a survey
SpyIntel [72]
I think c .. I already took a course .. and the test had that question.. I cant remember the answer though
5 0
4 years ago
Read 2 more answers
What is 20,700,0000 in standard notation?
alexdok [17]

Answer:

2.07 x 10^4

Step-by-step explanation:

8 0
3 years ago
What is -10a to the 6th power over -9 simplified
densk [106]

Answer: 5/3(a)^6

Step-by-step explanation:


8 0
3 years ago
Other questions:
  • Solve the quadratic equation numerically (using tables of x- and y- values).
    8·1 answer
  • Simplify: <img src="https://tex.z-dn.net/?f=4%5Csqrt%7B320%7D%20-%203%5Csqrt%7B80%7D" id="TexFormula1" title="4\sqrt{320} - 3\sq
    9·1 answer
  • Help Please!!!!. I need help with this assignment.
    13·1 answer
  • The correlation between two variables is –0.63 for a sample of 20 observations. What is the coefficient of determination between
    6·1 answer
  • Determine the degree of the polynomial.<br> 8a9 – 2a8 + 1
    6·1 answer
  • Kathy is baking cakes. Each cake requires 1/12 of a teaspoon of vanilla,and she has 3/4 of a teaspoon,how many cakes can she bak
    14·1 answer
  • Cos45*/sec30*+cosec60*​
    10·2 answers
  • Calculate the side lengths a and b to two decimal places.
    7·2 answers
  • -3x + 3y = 9<br> 2x - 7y = -14
    12·1 answer
  • Julie has 300ml of juice, She gives of the juice away.<br> How much juice does she give away?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!