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lakkis [162]
3 years ago
10

Enter the equivalent distance in km in the box.

Mathematics
2 answers:
Delvig [45]3 years ago
4 0
It is .6 of a kilometer 
expeople1 [14]3 years ago
3 0
Um I think it is 0.6
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A large box contains 18 small boxes and each small box contains 25 chocolate bars. How many chocolate bars are in the large box?
Katarina [22]
You need to multiply 25 by 18 to find the total.

25 x 18 = 450.

There are 450 chocolate bars in the large box
5 0
3 years ago
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How far from the line 3x+2y=5 is the point of intersection of x+y=5 and x–y=3?
Ray Of Light [21]

Answer:

(9sqrt13)/13

Step-by-step explanation:

7 0
3 years ago
Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the results from other research
kolbaska11 [484]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

Yes the researcher can  conclude that the supplement has a significant effect on cognitive skill

b

d =  0.5778

c

The result of this hypothesis test shows that there is sufficient evidence to  that the supplement had significant effect.The measure of effect size is  large due to the large value of Cohen's d (0.5778 > 0.30 )

Step-by-step explanation:

From the question we are told that

  The sample size is  n=16

    The sample mean is  M  =  50.2

    The standard deviation is \sigma  = 9

    The  population mean is  \mu =  45

     The level of significance is  \alpha =  0.05

The null hypothesis is H_o  \mu =45

The alternative hypothesis is H_a  \mu \ne 45

Generally the test statistics is mathematically represented as

          z =  \frac{M -  \mu}{\frac{\sigma}{\sqrt{n} } }

=>       z =  \frac{50.2 - 45}{\frac{9}{\sqrt{16} } }

=>       z =  2.31

Generally the p-value is mathematically represented as

     p-value  =  2 *  P(Z >  z )

      p-value  =  2 *  P(Z >  2.31 )

From the z-table  

      P(Z >  2.31 ) = 0.010444

=>     p-value  =  2 *  0.010444

=>     p-value  =  0.021

From the obtained values we see that p-value <  0.05

 Decision Rule

 Reject the null hypothesis

Conclusion

There is sufficient evidence to conclude that the supplement has a significant effect on the cognitive skill of elderly adults

Generally the Cohen's d for this study is mathematically represented as

    d =  \frac{M  -  \mu}{\sigma }

=>  d =  \frac{50.2 -45}{9 }

=>  d =  0.5778

3 0
3 years ago
Help me simplify this because i have no idea how to do it and no teacher to help me
VARVARA [1.3K]

Answer:

4sqrt6

Step-by-step explanation:

I am completely terrible at simplifying radicals but here we go:

8x12=96

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3 0
3 years ago
What is 22/15 reduced
olga55 [171]

Answer:

It is already reduced

Step-by-step explanation:

4 0
3 years ago
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