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swat32
3 years ago
10

Identify the property used in each step of solving the inequality 7x+4<46

Mathematics
2 answers:
meriva3 years ago
8 0
7x+4<46

7x+4(-4)<46(-4) <- Subtraction Property of Equality

7x<42

7x(/7)<42(/7) <- Division Property of Equality

x<6

I hope this helps!
~kaikers
MA_775_DIABLO [31]3 years ago
5 0

Answer:

Step 2:  Addition property

Step 3:  Multiplication property

Step-by-step explanation:

It would help if you added the possible answer choices with your question so you know your getting the correct answer.. then you wont have to have someone spitting out a bunch of numbers and paragraphs to an answer you still dont have... It doesnt take that long to add the possible answers... just a little FYI since I see this so much on here!!!

The answer above is correct on edg...  Good Luck!!!

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Step-by-step explanation:

This is nonlinear because its parent function is y = x^{2}. The parent function of a linear equation is y = x.

I hope this helps :))

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3 years ago
A researcher records the amount of time (in minutes) that parent child pairs spend on social networking sites to test whether th
ki77a [65]

Answer:

(a) A matched pair design is used to perform the test.

(b) Each sample is of size 30.

(c) The null hypothesis is rejected.

(d) The effect size of the test is medium.

Step-by-step explanation:

A statistical experiment is performed to determine whether the amount of time (in minutes) that parent-child pairs spend on social networking sites to test show any generational differences.

<u>Given</u>:

MD = -42 minutes

t₍₂₉₎ = 4.021

p < 0.05

d = 0.49

The hypothesis is:

<em>H₀</em>: There is no difference between the means, i.e. <em>μ₁</em> = <em>μ₂</em>.

<em>Hₐ</em>: There is a significant difference between the means, i.e. <em>μ₁</em> ≠ <em>μ₂</em>.

(a)

A matched pair design is used to perform the test.

In a matched pair design the participant of the two groups are related in some way. For example, the same sample is tested before and after applying the treatment.

In this case the matched are pairs are of children and their parents. And the treatment is the amount of time spent on social networking sites.

(b)

The degrees of freedom of a matched pair design is:

df = n - 1

29 = n - 1

n = 29 + 1

n = 30

Thus, each sample is of size 30.

(c)

The <em>p</em>-value of the test statistic is < 0.05.

If the <em>p</em>-value is less than the significance level <em>α </em>(say, 0.05) then the null hypothesis is rejected and vise-versa.

Since <em>p</em> < 0.05 the null hypothesis is rejected concluding that there is a significant difference between the amount of time spent on social networking sites by parents and children.

(d)

The estimated value of Cohen's d is, <em>d</em> = 0.49.

A Cohen's d value between the range 0.50 to 0.80 is considered as medium.

Thus, the effect size of the test is medium.

3 0
3 years ago
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