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FinnZ [79.3K]
3 years ago
11

You work for the Game, Fish, and Parks Department. You are replacing buoys at a local beach with a new model that has a height o

f 10 feet. The current buoys extend 2 feet below the water and 7 feet above the water.
How many feet taller are the new buoys?

1
3
5
15
19
Mathematics
1 answer:
Vinvika [58]3 years ago
6 0
The answer is 1 :)

7+2=9 10-9=1
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2 years ago
Mova Industries pays a finder's fee of 20% of the new employee's annual salary. What is the correct setup to find the finder's f
forsale [732]

.2 x 150,000 would be the way to find the employee's salary because 20% = .2

5 0
3 years ago
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Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 5
Harman [31]

Answer:

μ =2.23

\sigma_x^2= 1.49

\sigma_x=1.22

Step-by-step explanation:

Radio(x)                            weeks                           P(x)

0                                         5                                 5/100 = 0.05

1                                           27                               27/100=0.27

2                                          27                                 27/100 = 0.27

3                                         27                                 27/100 = 0.27  

4                                           9                                    9/100=0.09

5                                             5                                    5/100=0.05

We know that

Mean ,μ

\mu =\sum x.P(x)

μ = 0 x 0.05 + 1 x 0.27 + 2 x 0.27 + 3 x 0.27 + 4 x 0 .09 + 5 x 0.05

μ =2.23

\sigma_x^2= \sum x^2\times P(x)-(\sum x.P(x))^2

\sigma_x^2= 0^2\times 0.05+ 1^2\times 0.27+ 2^2\times 0.27+ 3^2\times 0.27+ 4^2\times 0.09+5^2\times 0.05-2.23^2

\sigma_x^2= 1.49

\sigma_x= \sqrt{\sigma_x^2}

\sigma_x=1.22

7 0
3 years ago
The Big Telescope Company sells circular mirrors. Their largest mirrors have radii of 5 meters and their smallest mirrors have r
pogonyaev

Answer: 1:5

Step-by-step explanation:

Given: The cost of every mirror is proportional to the cube of the mirror's radius.

i.e. \dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{(\text{radii of smallest mirror}^3)}{\text{(radii of largest mirror)}^3}

Their largest mirrors have radii of 5 meters and their smallest mirrors have radii of 1 meter.

Then,

\dfrac{\text{Cost of smallest mirror}}{\text{Cost of  largest mirror}}=\dfrac{1^3}{(5)^3}=\dfrac{1}{125}

The ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors will be:

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Hence, the ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors = 1:5 .

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In-s [12.5K]

Answer:

-5/24

Step-by-step explanation:

Find a common denominator:

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3/8 times 3= 9/24

-14/24 +9/24 =5/24

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3 years ago
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