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3 years ago

Please help I will mark Brainliest

Mathematics

2 answers:

adoni [48]3 years ago

7 0

Answer:

1. 8

2. 4

3. 5

4. 8/125

5. 4/3

6. 6

7. 8

8. 2

jok3333 [9.3K]3 years ago

4 0

the answer is 5 i think lol

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The reading speed of second grade students in a large city is approximately normal, with a mean of 90 words per minute (wpm) a

Genrish500 [490]

The probability is 0.2743.

Calculating the z-score for this time, we have:

z = (X-μ)/σ
z = (96-90)/10 = 6/10 = 0.6

Using a z-table (http://www.z-table.com) we see that the area to the left of this, less than this score, is 0.7257. This means the area greater than this would be 1-0.7257 = 0.2743.

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4 years ago

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What is the area of a triangle that has a height of 8 feet and a base length of 5 feet? (1 point)

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Answer:

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Step-by-step explanation:

Triangle area is (1/2) Base x Height

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2 years ago

The distribution of the number of hours people spend at work per day is unimodal and symmetric with a mean of 8 hours and a stan

Wewaii [24]

Answer: 95% of all people work between 7 hours and 9 hours per day and It is true.

Step-by-step explanation:

Since we have given that

Mean = 8 hours

Standard deviation = 0.5 hours

According to Empirical Rule,

at 95% confidence, it lies within 2 standard deviations from the mean

so, lower value is given by

$mean-2\times sd\\\\=8-2\times 0.5\\\\\=8-1\\\\=7\ hours$

upper value is given by

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Hence, 95% of all people work between 7 hours and 9 hours per day.

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3 years ago

1/3(3+2x)−1=10 Drag and drop the statement that shows the solution to the equation into the box.

GarryVolchara [31]

Given
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A wildlife conservation group buys the 9 square miles of land shown.

Natasha2012 [34]

Answer:

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Step-by-step explanation:

Three equal lines, 9 miles. 9/3 = 3, so each side of the triangle is 3 miles long hope this helps :)

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3 years ago

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