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
Artemon [7]
3 years ago
6

Solve the equation

Mathematics
2 answers:
inysia [295]3 years ago
8 0

Answer:

x ≈ 1.32, x ≈ - 5.32

Step-by-step explanation:

Given

x² + 4x - 7 = 0 ( add 7 to both sides )

x² + 4x = 7

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(2)x + 4 = 7 + 4

(x + 2)² = 11 ( take the square root of both sides )

x + 2 = ± \sqrt11} ( subtract 2 from both sides )

x = - 2 ± \sqrt{11}

Thus

x = - 2 - \sqrt{11} ≈ - 5.32 ( to 2 dec. places )

x = - 2 + \sqrt{11} ≈ 1.32 ( to 2 dec. places )

Rashid [163]3 years ago
8 0

Step-by-step explanation:

bla bla bla hahhahahhahahah just for fun

You might be interested in
You pick a card at random. You put the first card back, and you pick a second card at
Fudgin [204]

Answer:

Step-by-step explanation:

maybe 8 or 1/9

8 0
2 years ago
I WILL GIVE BRAINLIEST PLEASE HELP!!!
luda_lava [24]

Answer:

Step-by-step explanation:

interchange x and y

y= 1/(x - 2)

x = 1 / (y - 2)      Multiply both sides by y - 2

x(y - 2) = 1          Remove the brackets

xy - 2x = 1          Add x to both sides

xy = 1 + 2x         Divide by x

y = (1 + 2x)/x

The brackets have been destroyed. The answer is as I've given it.

y = (1/x) + 2

5 0
3 years ago
Andrea was given a $700 hiring bonus with her new job she will earn an average commission of $250 per week for the next 15 weeks
Bad White [126]

Answer:

4,450

Step-by-step explanation:

You muiltiply 250 times 15 then you add 700

8 0
3 years ago
Use the Laplace transform to solve the given initial value problem. y' + 6y = e^4t ; y(0)=2 ...?
TiliK225 [7]
Performing laplace transform of the equation.

sY(s) - y(0) + 6Y(s) = 1/(s-4)
(s+6)Y(s) - 2 = 1/(s-4)
Y(s) = 2/(s+6) + 1/(s-4)(s+6), by partial fraction decomposition
Y(s) = 2/(s+6) + 1/10 * (1/(s-4) + 1/(s+6))
Y(s) = 0.1/(s-4) + 2.1/(s+6)

Performing inverse laplace transform,
y(t) = 0.1e^4t + 2.1e^(-6t)


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
3 years ago
The weight of laboratory mice follows a normal distribution, with a mean of 0.68 ounce and a standard deviation of 0.02 ounce. W
Natasha2012 [34]
The answer is letter D
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which answer best explains theoretical and experimental probability?
    12·2 answers
  • 68.3 times 6.5<br> A) 54.675<br> B) 5.04<br> C) 5.4675<br> D) 443.95<br> (no need to show work!)
    13·2 answers
  • What is the circumference of a circle with an area of 16π in²
    6·1 answer
  • What is the following product?<br><br>A: –2<br>B: 2<br>C: 22 – 40√6<br>D: 98 – 40√6
    13·1 answer
  • Hallar un numero,cuyo duplo aumentado en 5 es a su cuadruplo disminuido en 5 como 5 es a 7
    9·1 answer
  • Find sin(B) in the triangle.
    10·2 answers
  • Sharon has some one-dollar bills and some five-dollar bills. she has 14 bills. the value of the bills is $30.
    9·1 answer
  • What can you say about the function that generated the following table of values? O A. the function has no x-intercepts O B. the
    10·1 answer
  • What is 16 divided by 845?
    7·2 answers
  • An airplane flying with the wind takes 2 hours to travel a distance
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!