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
seropon [69]
3 years ago
8

Need help asap need it thenext few minutes

Mathematics
1 answer:
pantera1 [17]3 years ago
6 0

Answer:

Correct Option is d (x+3)^2 = 11

Step-by-step explanation:

For completing the square our equation should be in the form of a^2 +2ab + b^2 = (a+b)^2

In the given equation we have:

x^2 +6x -2\\x^2 + 2(x) (?) +(?)^2 = 2\\for\,\, making\,\, 6x\,\, 2*x*3=6x \\so, \,\,we\,\, can\,\, add\,\, and\,\, subtract\,\, (3)^2 \,\,on\,\, both\,\, sides\\x^2 + 2(x) (3) +(3)^2 -(3)^2= 2\\(x+3)^2 -9 =2\\(x+3)^2 =2+9\\(x+3)^2 = 11

Correct Option is d (x+3)^2 = 11

You might be interested in
You own a car wash with three of your friend the total profit in this first month was 438. In two months each of you had made a
goldenfox [79]
$736 because $184 x 4 would give you your amount.
8 0
3 years ago
Solve and show how pls
irakobra [83]

Answer:

16

Step-by-step explanation:

since -4 is being squared, we can write it out as -4 * -4, to get us the answer 16. this answer is positive because a negative times a negative will cancel out and = a positive.

4 0
3 years ago
Write x2 - 8x - 3 in vertex form.
crimeas [40]
Vertex form:

y = a(x - h)² + k

I have not learned this stuff yet, but by using online calculators, I can determine that the vertex form is:

Y = (x - 4)² - 19

I believe so :/
6 0
4 years ago
What is the general form of the equation for the given circle centered at o (0,0) (4,5)?
charle [14.2K]
The general equation of the circle is expressed as (x-h)2 + (y-k)2 = r2 where (h,k) is the center of the circle. we are are given the center of the circle at (0,0) so the expression is simplified to <span>(x)2 + (y)2 = r2. given the other point, r2 is equal to 41. hence the final equation is x2 + y2 = 41</span>
8 0
3 years ago
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
masya89 [10]

Answer:

z= \frac{3.44-2.54}{0.45}=2

P(X>3.44) = P(Z>2) = 0.025

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the grade points avergae of a population, and for this case we know the following properties

Where \mu=2.54 and \sigma=0.45

The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ). Broken down, the empirical rule shows that 68% falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ).

So we can find the z score for the value of X=3.44 in order to see how many deviations above or belowe we are from the mean like this:

z= \frac{3.44-2.54}{0.45}=2

So the value of 3.44 is 2 deviations above from the mean, so then we know that the percentage between two deviations from the mean is 95% and on each tail we need to have (100-95)/2 = 2.5% , because the distribution is symmetrical, so based on this we can conclude that:

P(X>3.44) = P(Z>2) = 0.025

5 0
4 years ago
Other questions:
  • Help got to get this done ASP or I will not be able to test tommrow and I will get a F this is worth a 100 points so please help
    7·2 answers
  • WILL GIVE THE BRAINLIEST! Which of the following inequalities can be represented by the graph?
    5·1 answer
  • 1/4 + n = 2/3 *using the inverse operation*
    6·2 answers
  • Solve?? 3x + 10 &gt; 4
    13·2 answers
  • Graph a point. Start at your origin, move left 10 units, and then move up three units which ordered pair is the point you graphe
    7·2 answers
  • Answer two questions about Equations A and B:
    8·2 answers
  • A company determined that for each $1 increase in the price of their product, the
    11·2 answers
  • What are the coordinates of point H? On a coordinate plane, point H is 1.5 units to the left and 3 units up. (Negative 3, 1 and
    7·2 answers
  • Need help. PLEASE! I dont understand ​
    5·1 answer
  • Write the equations of each line in slope-intercept form.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!