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3 years ago

4. In the spinner below, the pointer stopped on the blank region. What color should the blank region be so

Mathematics

1 answer:

Tju [1.3M]3 years ago

4 0

Red because there are more reds

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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?

STatiana [176]

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:

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

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

$-25=x-500$

$-25+500=x-500+500$

$x=475$

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

3 0

2 years ago

6p+2+ p - 3 = 8p - 8

saul85 [17]

6p+p+2-3=8p-8
7p-1=8p-8
1=1p-8
7=1p
p=7

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3 years ago

The diagram shows a row of five identical tiles each in the shape of an isosceles trapezoid what is the area of one tile

Misha Larkins [42]

Get the total amount of the 5 tiles and divide it by 5.

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2 years ago

How did the Germanic tribes contribute to the decline of the Western Roman Empire? Write your answer in a paragraph of 125 words

ololo11 [35]

Answer: Invasions by Barbarian tribes

The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders

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3 years ago