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3 years ago

Help please Brainleaest!

Mathematics

1 answer:

tigry1 [53]3 years ago

4 0

Answer:

Question 1 of 7, Step 1 of 2 B/21 Correct Consider the following frequency table representing the distribution of the length of a screw used in a bookshelf assembly in inches) Length of a Screw in Inches) Class Frequency 15 10 0.31-0.35 0.36-0.40 0.41-0.45 0.46-0.50 0.51-0.55 15 12 6 Step 1 of 2: Determine the midpoint for the third class.

Step-by-step explanation:

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Which trigonometric function has the same value as sin 75°?

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cos 15 degrees is your answer.

Answer choice (b)

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The area of a rectangular swimming pool is 360 square feet. If the length of the swimming pool is 9 feet more than its width, fi

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Answer:

l = 24ft

Step-by-step explanation:

A = lw

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3 years ago

The Range Rule of Thumb roughly estimates the standard deviation of a data set as _______.

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Answer:

Option A)

$s = \dfrac{\text{Range}}{4}$

Step-by-step explanation:

Range Rule of Thumb

The range Rule of thumb states that the range is four times the standard deviation.
The standard deviation is a measure of dispersion.

$\text{Range = Maximum - Minimum}\\\text{s: Standard Deviation}\\\text{Range rule of Thumb:}\\\text{Range} = 4\times s\\\\s = \dfrac{\text{Maximum - Minimum}}{4}$

Thus, the correct answer is

$s = \dfrac{\text{Range}}{4}$

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3 years ago

How many three-letter "words" can be made from 9 letters "fghijklmn" if repetition of letters (a) is allowed?

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