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Kitty [74]
3 years ago
13

BRAINLIESTTT ASAP!!! PLEASE HELP ME :)

Mathematics
2 answers:
Paha777 [63]3 years ago
7 0

Answer:

No.

Step-by-step explanation:

According to the Product-to-Power Exponential Rule, whenever you multiply terms with exponents and coefficients\variables, you add the exponents, NOT multiply:

{x}^{9}  =  {x}^{3}  \times  {x}^{3}  \times  {x}^{3}

NOT

{x}^{27} = ({x}^{3})^{9}  = ({x}^{9})^{3} = ({x}^{3})^{3}

I am joyous to assist you anytime.

slava [35]3 years ago
5 0

Answer:

No.

Step-by-step explanation:

They are not equivalent.

x^3 \cdot x^3 \cdot x^3 = x^{3 + 3 + 3} = x^9

x^{3 \cdot 3 \cdot 3} = x^{27}

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For a normal distribution with μ=500 and σ=100, what is the minimum score necessary to be in the top 60% of the distribution?
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Answer:

475.

Step-by-step explanation:

We have been given that for a normal distribution with μ=500 and σ=100. We are asked to find the minimum score that is necessary to be in the top 60% of the distribution.

We will use z-score formula and normal distribution table to solve our given problem.

z=\frac{x-\mu}{\sigma}

Top 60% means greater than 40%.

Let us find z-score corresponding to normal score to 40% or 0.40.

Using normal distribution table, we got a z-score of -0.25.

Upon substituting our given values in z-score formula, we will get:

-0.25=\frac{x-500}{100}

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Therefore, the minimum score necessary to be in the top 60% of the distribution is 475.

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