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ivann1987 [24]
3 years ago
7

Simplify the expression in exponential notation. a • a • a

Mathematics
2 answers:
vladimir2022 [97]3 years ago
8 0

the answer would be a³

kolezko [41]3 years ago
5 0

For this case we have that by definition of power properties it is fulfilled that:

a ^ n: Represents the multiplication of "a" n times.

Example:

a ^ 5 = a * a * a * a * a

So, we have the following expression:

a * a * a

That in exponential notation we can write as:

a ^ 3

Answer:

a ^ 3

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The composite number is A.63. 1 is neither a prime or composite. 19 is a prime. 0 is a trick honestly, it isn't a prime or a composite
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A right rectangular prism is packed with cubes of side length 1/2 inch. If the prism is packed with 5 cubes along the length, 3
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The answer is C 11 1/4 or 11.25 Cubic inches
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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
The can is 12cm high and diameter is 8cm how much does it hold
Lady bird [3.3K]
I cannot answer this question because I don't know what liquid or item the can is holding or the formula
5 0
3 years ago
Find the amount A accumulated after investing a principal P= $2,000 for t= 8 years at an interest rate r= 6% compounded monthly.
Ierofanga [76]

Answer:

A = 3228.2854

I = 1228.2854

Step-by-step explanation:

1 . Use the CI formula. (Reference in file.)

2. Solve equation after plugging the given information we have.

3. We will have the Amount after solving the equation.

4.  To find interest we use formula A=P+I


Source - TutorEye

7 0
3 years ago
Read 2 more answers
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