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kirza4 [7]
3 years ago
13

How to simplify 5k + 3 + 2j – 2 – k

Mathematics
2 answers:
jek_recluse [69]3 years ago
8 0

Answer:

4k + 2j + 1

Step-by-step explanation:

5k + 3 + 2j – 2 – k =

5k - k + 2j + 3 - 2

4k + 2j + 1

Varvara68 [4.7K]3 years ago
3 0

Answer:

4k+2j+1

Step-by-step explanation:

hello :

5k + 3 + 2j – 2 – k=(5k-k)+2j+(3-2) =4k+2j+1

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Select the correct answer.
miskamm [114]

Answer:

C. -3x-3

Step-by-step explanation:

The slope is rise/run, which is -3/1 or -3. The y-intercept is located at -3.

5 0
3 years ago
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A certain financial services company uses surveys of adults age 18 and older to determine if personal financial fitness is chang
zysi [14]

Answer:

The calculated z = 2.85 falls in the critical region z > 1.96 so we accept the null hypothesis that there is no difference between the population proportions for the two years.

Step-by-step explanation:

Let p1 be the sample of 1000 adults chosen in 2012 and

p2 be the sample of 1100 adults chosen in 2010

<u>Part a:</u>

The hypothesis that can be used to test for a significant difference between the population proportions for the two years is:

H0: p1-p2= 0           against the claim      Ha: p1-p2≠0

<u>Part b:</u>

The sample proportion indicating that their financial security was more that fair in 2012 is

p1^= 410/1000= 0.41

In 2010 is:

p2^= 385/1100= 0.35

<u>Part c:</u>

p^c= 410+385/1000+1100= 0.3785

q^c= 1-p^c= 1-0.3785= 0.6124

The critical region is z > ±1.96

The test statistic is

z= p1^- p2^ / sqrt ( p^cq^c( 1/n1+ 1/n2)

z= 0.41-0.35 /sqrt( 0.3785*0.6124(1/1000 +1/1100)

z=  0.06 / 0.021036

z= 2.85

Conclusion

The calculated z = 2.85 falls in the critical region z > 1.96 so we accept the null hypothesis that there is no difference between the population proportions for the two years.

P- value :  0.00466

The result is significant( accept the null hypothesis) for  value less than 0.05

<u>Part d:</u>

                                                     2012                         2010

Sample                                       1000                           1100

Proportions                               0.41                             0.35

Standard Error               √0.41( 0.59)/1000        √0.35( 0.65)/1100

                                               = 0.0155                0.01438

Standard Error for the difference = √0.0155² + 0.01438² =0.0211

p1-p2 ± z* standard error for the difference

0.41-0.35 ± 1.96 *( 0.0211)

0.06 ± 0.041356

-0.018644,   0.101356

The 95 % confidence interval estimate is (-0.018644,   0.10135

4 0
3 years ago
I don’t really get this.
Vsevolod [243]

Answer:

The answer is H. II and III only.

Step-by-step explanation:

A simple way to tell if a relation is a function is by taking a look at the X value, which is on the left. If the X value repeats again  (ex: (0,1) (0,2) or (5,3 (5,7)) it is not a function. However, the Y value is allowed to repeat.  

6 0
3 years ago
Continue The Pattern: 7, 13, 19 ; hint; the next five numbers are not 25, 31, 37, 43, &amp; 49
Lana71 [14]

The difference between every two adjacent members of the series is constant and equal to 6.


7 0
3 years ago
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HELP ME WITH SOLUTIONS ASAP
stira [4]

Answer:

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Step-by-step explanation:

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8 0
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