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IRINA_888 [86]
3 years ago
12

PLEASE ANSWER QUICKLY! : There are four questions here please make sure to click through, I got the first answer from someone bu

t they neglected to go through the photos. Oh well xD Any help is appreciated

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0
Hey there :)

2 ) We know the perimeter of the regular hexagon to be 12 cm and the apothem to be \sqrt{3} cm

The area formula of a regular hexagon is:
Area = \frac{1}{2} × perimeter × apothem

Let us substitute:
A = ( \frac{1}{2})(12)( \sqrt{3} )
   = 6\sqrt{3} cm²
Your answer will be the second option

3 ) We know the value of the apothem to be 16.9 cm and the side length to be 14 cm

The perimeter of this octagon is:
P = 8 x side
   = 8 x 14
   = 112 cm

Area formula of a regular octagon is
A = \frac{1}{2} perimeter x apothem
A = \frac{1}{2} ( 112 )( 16.9 )
   = 946 .4 cm²
Your answer will be the last option

4 )  The apothem of the regular pentagon is given to be 5.5 cm and the side is 8 cm

The perimeter of this pentagon is:
P = 5 x side
   = 5 x 8
   = 40 cm

Area formula of a pentagon is:
Area = \frac{1}{2} x apothem x perimeter
         = \frac{1}{2} ( 5.5 ) ( 40 )
         = 110 cm²
Your answer will be the third option

5 ) The apothem of this hexagon is9\sqrt{3} cm and the side is 18 cm

The perimeter of the hexagon is
P = 6 x side
   = 6 x 18
   = 108 cm

The area formula of a regular hexagon is
Area = \frac{1}{2} x apothem x perimeter
         = \frac{1}{2} ( 108 )( 9\sqrt{3} )
         = 841 cm²
Your answer will be the first option
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You deposit some money into a bank account paying 8% simple interest per year. You received $500 in interest after 2 years. How much the deposit (principal) was?


Result


The principal was $3125.


Explanation


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In this example I = $500, i = 8% and t = 2 years, so


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The number of tickets purchased by an individual for Beckham College's holiday music festival is a uniformly distributed random
Zanzabum

1) Mean: 6.5

2) Standard deviation: 3.2

Step-by-step explanation:

1)

A uniform random distribution is the distribution of a variable that can assume n different values, and each of these values is equally likely to occur.

This means that the probability of occurring of each of these values is the same:

p(x_1)=p(x_2)=...=p(x_n)

For a uniform random distribution, the mean of the distribution is simply equal to the median value of the distribution, which is exactly at the center of the distribution itself. It can be calculated as

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Here the distribution consists of all values ranging from 1 to 12, so:

a = 1

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Therefore the mean value is

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For a uniform random distribution, it can be dimostrated that the variance of the distribution is

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For the distribution in this problem, we have:

a = 1

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Therefore the variance is

\sigma^2 = \frac{1}{12}(12-1)^2=10.08

The standard deviation is the square root of the variance, therefore for this distribution it is:

\sqrt{\sigma^2}=\sqrt{10.08}=3.2

Learn more about mean and standard deviation:

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Line PQ in line RS intersect to form four right angles which statement that would it be
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Answer:

PQ is perpendicular to RS

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