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
zmey [24]
3 years ago
13

Determine the next step for solving the quadratic equation by completing the square. 0 = –2x2 + 2x + 3 –3 = –2x2 + 2x –3 = –2(x2

– x) –3 + = –2(x2 – x + ) = –2(x – )2 = (x – )2 The two solutions are
Mathematics
2 answers:
VLD [36.1K]3 years ago
8 0
We have that
0 = –2x²<span>+ 2x + 3
</span>

Group terms that contain the same variable, and move the constant to the opposite side of the equation

(–2x²+ 2x)=-3

Factor the leading coefficient 

-2*(x²-x)=-3

Complete the square. Remember to balance the equation by adding the same constants to each side

-2*(x²-x+0.25)=-3-0.50

Rewrite as perfect squares

-2*(x-0.5)²=-3.50

(x-0.5)²=-3.50/-2

(x-0.5)²=1.75------> square root both sides

(+/-)(x-0.5)=√7/2

(+)(x-0.5)=√7/2----> (√7/2)+0.5----> x=1.823

(-)(x-0.5)=√5/2-----> x=0.5-(√7/2)----> x=-0.823

the solutions are

x=1.823

x=-0.823

guapka [62]3 years ago
5 0

Answer:

-1/2, 1/4, 1/2

Step-by-step explanation:

You might be interested in
Again one question not two
Anettt [7]

Answer: A) 5m = 50; m = 10

Step-by-step explanation:

The diagram shows 5 "m"s, or 5*m equal to 50.  Thus, 5m=50.

Because 5m = 50, divide both sides by 5 to get that m = 10

<em>Hope it helps <3</em>

8 0
2 years ago
Read 2 more answers
Two lines are represented by the equations -1/2y=6x+10 and y=mx for which value of m will the lines be parallel
hjlf

Answer:

-12

Step-by-step explanation:

So to start we need to know what makes a line parallel. In an equation we know that for lines to be parallel they must have the same slope(m).

Then, we  need to know the slope-intercept form of an equation. The slope intercept form is y=mx+b where m is the slope of the line and b is the y-intercept. In this problem where can see the second equation is already in this form.

Now that we know we need to find the slope, and we know that the second equation is in slope-intercept form we're going to convert the fist equation into the correct form.

To do this, we know we need to make sure y is the only thing on the left side of the equal sign. Currently, on the left side of the equal sign we have -\frac{1}{2} y so we have to divide both sides by -\frac{1}{2} to get y=-12x -20

Now that we have it converted to slope-intercept form, we are going to look for what represents the slope or m in the equation. In this case the slope would be -12, so any line with a slope of -12 will be parallel.

8 0
3 years ago
a man pays 330 each month for his gym membership what is the change in the amount of money in his account after two thirds of a
olasank [31]

\dfrac{\$330}{1\,month}\times\dfrac{12\,month}{1\,year}\times\dfrac{2}{3}\,year\\\\=\$2640

The account will have decreased by $2640 after 2/3 year.

6 0
3 years ago
How do you 3rd root a number
zepelin [54]
Ex: 7^3=(7×7×7) --- 7×7=49×7=343
7 0
3 years ago
He daily milk production of guernsey cows is approximately normally distributed with a mean of 35 kg/day and a standard deviatio
soldier1979 [14.2K]

Answer:

25.1 kg

Step-by-step explanation:

A suitable probability calculator can tell you the 5th percentile of this distribution.

7 0
3 years ago
Other questions:
  • Please help I’ll mark brainliest
    7·2 answers
  • What must be added to 3x -7 to make x 2 + 4x -1?
    5·1 answer
  • Fernanda bought a 500-milliliter container of orange juice. She used some of the juice and has 200 milliliters left. How much or
    8·2 answers
  • Madonna and Bruce Springsteen had the two top-grossing concert tours for 2012, together generating about $427 million in ticket
    9·1 answer
  • Lily offers embroidery services at her clothing store. She charges $2 for every letter plus a $6 setup fee. Which graph represen
    12·2 answers
  • If you answer these questions correctly with an explanation you can get Brainliest
    15·2 answers
  • X &lt; -5
    15·1 answer
  • PLS HELP (links = report)
    13·1 answer
  • Need help so confusing whats the answer <br><br> no spam
    13·1 answer
  • How many square feet of tile is needed for a room of 24 foot x 24 foot
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!