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Vinil7 [7]
3 years ago
15

Use the grouping method to factor x^3+x^2+3x+3

Mathematics
1 answer:
maks197457 [2]3 years ago
7 0

Answer:

(x^2 + 3)(x + 1).

Step-by-step explanation:

x^3 + x^2 + 3x + 3

= x^2(x + 1) + 3(x + 1)

= (x^2 + 3)(x + 1).

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Values for the labor force participation rate of women​ (LFPR) are published by the U.S. Bureau of Labor Statistics. A researche
Anna [14]

Answer:

(A) For this research we made use of the paired t test.

(B) For the t test, we conclude that in the null Hypothesis H₀, there was no difference between the average labor force participation rate for women between the years of 1968 and​ 1972 as against the alternate Hypothesis Hₐ.

From the output data we have, since the P value is 0.024 and  is lesser than the alpha value of 0.05, we will accept the alternate Hypothesis instead of the null Hypothesis.

Note:Kindly find an attached copy of the complete question below.

Step-by-step explanation:

Solution

Recall that:

The U.S of Bureau of Labor Statistics have published Values for the labor force participation rate of women​ (LFPR).

We are more interested in if there was a difference between female participation 1968 and​ 1972, a rapid change in women.

so we will check values for 19 randomly selected cities for 1968 and​ 1972,

Now,

(a) Which of this test is most appropriate for this data

The test which will be more suitable for these data will be paired to test t.

Because the data is for labor force participation for two different years, we apply the t test. now that we are making a comparison of two different year times, we will apply the t test in this research.

In this case, the sample size for both the years evaluated should be same, since we need to pair each and all the data.

(b)By using the test you selected, explain your conclusion

Now, to test the data paired t test, we have already the null Hypothesis  H₀: In this case there  is no difference between the average labor force participation rate for women between the years of 1968 and​ 1972 as compared with the alternate Hypothesis Hₐ: there was a significant difference between the average labor force participation rate for women between the years of 1968 and​ 1972.

However, from the output, we have that the P value is 0.024 which is lower than the alpha value of 0.05.

In conclusion, the alternate Hypothesis accepted while the null Hypothesis is rejected.

Note: kindly find an attached copy of the complete question to this solution

below.

4 0
4 years ago
Which of the following best describes the English expression the quotient of four and the sum of a number and three? A. 4/x+3 B.
Tems11 [23]
Quotient means division, which is obvious by all the division answers. 
It says "Quotient of 4 AND ..." which means that four will be on top and everything else will be on the bottom. 

So now you have:
\frac{4}{?}
four over something unknown. 

Reading the rest of the question, "the sum of a number and three"
Sum means addition, again obvious by the answer choices. 
"a number" is an unknown, so we can set that to x
and this x is being added to by three, so therefore 
x+3 would be in your denominator. 

You final equation should look like this:;
\frac{4}{x+3}
OR answer choice A

8 0
3 years ago
SOLVE for r.<br> V=(1/3)pi r^2 h
tekilochka [14]
This is a picture of the answer.

4 0
3 years ago
Read 2 more answers
A fountain holds 12,500 gallons of water. Joe wants to find how many liters that is. Which proportion could be use to solve for
Alla [95]
12500 divided by 0.26 = liters
7 0
3 years ago
Read 2 more answers
Cos(2x) + sin^2(x) = 0
zloy xaker [14]

cos(2<em>θ</em>) + sin²(<em>θ</em>) = 0

Half-angle identity:

cos(2<em>θ</em>) + (1 - cos(2<em>θ</em>))/2 = 0

Simplify:

2 cos(2<em>θ</em>) + 1 - cos(2<em>θ</em>) = 0

cos(2<em>θ</em>) = -1

Solve for <em>θ</em> :

2<em>θ</em> = arccos(-1) + 2<em>nπ</em>

2<em>θ</em> = <em>π</em> + 2<em>nπ</em>

<em>θ</em> = <em>π</em>/2 + <em>nπ</em>

where <em>n</em> is any integer.

7 0
3 years ago
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