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
strojnjashka [21]
2 years ago
5

PLEASE HELP ASAP! REMEMBER TO COMBINE LIKE TERMS!

Mathematics
2 answers:
Ugo [173]2 years ago
8 0
4y2+4(2y2-3)=?
4y2+8y2-12)=?
I think that 12y2-12 is your answer bc you can’t simplify it further
antiseptic1488 [7]2 years ago
5 0
4*2y^2= 8y^2
8y^2 + 4y^2= 12y^2
4*-3=12
12y^2 - 12
You might be interested in
What makes the shapes similar?
son4ous [18]

Answer:

The answer is the first option

hope this helps

Step-by-step explanation:

5 0
3 years ago
If a car factory checks 360 cars and 8 of them have defects, how many will have defects out of 1260?
viktelen [127]
You should expect 28 defected cars.
3 0
3 years ago
(2n-9)-(-2.4n+4) Please help!
Furkat [3]

Answer: =4.4n-13

Step-by-step explanation:

Let's simplify step-by-step.

2n−9−(−2.4n+4)

Distribute the Negative Sign:

=2n−9+−1(−2.4n+4)

=2n+−9+−1(−2.4n)+(−1)(4)

=2n+−9+2.4n+−4

Combine Like Terms:

=2n+−9+2.4n+−4

=(2n+2.4n)+(−9+−4)

=4.4n+−13

4 0
3 years ago
Assume that the paired data came from a population that is normally distributed. using a 0.05 significance level and dequalsxmin
Artemon [7]
"<span>Assume that the paired data came from a population that is normally distributed. Using a 0.05 significance level and d = (x - y), find \bar{d}, s_{d}, the t-test statistic, and the critical values to test the claim that \mu_{d} = 0"

You did not attach the data, therefore I can give you the general explanation on how to find the values required and an example of a random paired data.

For the example, please refer to the attached picture.

A) Find </span><span>\bar{d}
You are asked to find the mean difference between the two variables, which is given by the formula:
\bar{d} =  \frac{\sum (x - y)}{n}

These are the steps to follow:
1) compute for each pair the difference d = (x - y)
2) sum all the differences
3) divide the sum by the number of pairs (n)

In our example: 
</span><span>\bar{d} =  \frac{6}{8} = 0.75</span>

B) Find <span>s_{d}
</span><span>You are asked to find the standard deviation, which is given by the formula:
</span>s_{d} =  \sqrt{ \frac{\sum(d - \bar{d}) }{n-1} }

These are the steps to follow:
1) Subtract the mean difference from each pair's difference 
2) square the differences found
3) sum the squares
4) divide by the degree of freedom DF = n - 1

In our example:
s_{d} = \sqrt{ \frac{101.5}{8-1} }
= √14.5
= 3.81

C) Find the t-test statistic.
You are asked to calculate the t-value for your statistics, which is given by the formula:
t =  \frac{(\bar{x} - \bar{y}) - \mu_{d} }{SE}

where SE = standard error is given by the formula:
SE =  \frac{ s_{d} }{ \sqrt{n} }

These are the steps to follow:
1) calculate the standard error (divide the standard deviation by the number of pairs)
2) calculate the mean value of x (sum all the values of x and then divide by the number of pairs)
3) calculate the mean value of y (sum all the values of y and then divide by the number of pairs)
4) subtract the mean y value from the mean x value
5) from this difference, subtract  \mu_{d}
6) divide by the standard error

In our example:
SE = 3.81 / √8
      = 1.346

The problem gives us <span>\mu_{d} = 0, therefore:
t = [(9.75 - 9) - 0] / 1.346</span>
  = 0.56

D) Find t_{\alpha / 2}
You are asked to find what is the t-value for a 0.05 significance level.

In order to do so, you need to look at a t-table distribution for DF = 7 and A = 0.05 (see second picture attached).

We find <span>t_{\alpha / 2} = 1.895</span>

Since our t-value is less than <span>t_{\alpha / 2}</span> we can reject our null hypothesis!!

7 0
3 years ago
(( all - Same )) ----- Quadrilaterals are polygons
Marina CMI [18]

Answer:

yes

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • NL←→ is tangent to circle M at point N.<br><br><br><br> What is the measure of ∠MLN?
    10·2 answers
  • There are a total of 34 lions and Hyenas. Each lion eats 4 antelope. Each Hyena eats 3 antelope. 117 antelope are eaten. How man
    14·1 answer
  • Please help !! :0 <br><br> 6 = -4 (x-2) + 2x
    13·1 answer
  • The angle measures and/or side lengths of a triangle are described. Determine whether the conditions given
    7·1 answer
  • Select the correct answer. Consider the function f(x) = 3x and the function g, which is shown below. How will the graph of g dif
    5·1 answer
  • 5 times the sum of 12 and a number is 80<br> What is the value of the unknown number
    6·1 answer
  • Sesame Company purchased a computer system for $74,000 on January 1, 2018. It was depreciated based on a 7-year life and an $18,
    6·1 answer
  • MATH HELP ASAP! MARKING BRAINLIST!!!!!! maTH haLLP
    12·2 answers
  • TRUE or FALSE: ℼ is the ratio of a circle's circumference to its diameter.
    5·2 answers
  • Which set of statements would describe a parallelogram that can always be classified as a rhombus?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!