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3 years ago

HELPPPPPP!!

Mathematics

1 answer:

AlekseyPX3 years ago

7 0

Answer:

In 6 different ways can the three students form a set of class officers.

Step-by-step explanation:

There are 3 people Leila, Larry, and Cindy and 3 positions president, vice-president, and secretary.

We need to find In how many different ways can the three students form a set of class officers.

This problem can be solved using Permutation.

nPr = n!/(n-r)! is the formula.

Here n = 3 and r =3

So, 3P3 = 3!/(3-3)!

3P3 = 3!/1

3P3 = 3*2*1/1

3P3 = 6

So, in 6 different ways can the three students form a set of class officers.

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3 years ago

A rectangular prism with a length of 3.8 meters and a width of 1.5 meters has a volume of 16.53 cubic meters.

Maslowich

Answer:

H = 2.9 m

Step-by-step explanation:

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2 years ago

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4 years ago

Read 2 more answers

Find the a. MEAN and b. STANDARD DEVIATION for the data set. Round to two decimal places.

Dafna11 [192]

Answer:

Explained below.

Step-by-step explanation:

(10)

The data set is:

S = {124, 94, 129, 109, 114}

The mean and standard deviation are:

$\bar x=\frac{1}{n}\sum x=\frac{1}{5}\times [124+94+...+114]=114\\\\s=\sqrt{\frac{1}{n-1}\sum ( x-\bar x)^{2}}$

$=\sqrt{\frac{1}{5-1}\times [(124-114)^{2}+(94-114)^{2}+...+(114-114)^{2}]}\\=\sqrt{\frac{750}{4}}\\=13.6931\\\approx 13.69$

The correct option is B.

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So, the adult male's height is in the same range as about 95% of the other adult males whose heights were measured.

The correct option is B.

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μ = 100

σ = 26

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The correct option is B.

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$P(147700$

$=P(-1$

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The correct option is D.

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(15)

The z-score is given as follows:

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

5 0

3 years ago