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NNADVOKAT [17]
3 years ago
6

5 Points

Mathematics
2 answers:
slavikrds [6]3 years ago
7 0
C . Rocks I had that already
skelet666 [1.2K]3 years ago
6 0

Answer:

C. Rocks.

Step-by-step explanation:

A geologist usually studies rocks.

His studies are of the Earth,  the composition of the rocks of the Earth and how they were formed.

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According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 20
Vikentia [17]

Answer:

Random variable: for this case represent the number of complaints in 2007

Population parameter: represent the real proportion of complaints in 2007 p

Hypothesis to verify

We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:  

Null hypothesis:p=0.23  

Alternative hypothesis:p \neq 0.23  

Step-by-step explanation:

Information provided

n=1432 represent the random sample taken

X=321 represent the number of complaints

\hat p=\frac{321}{1432}=0.224 estimated proportion of complaints in 2007

p_o=0.23 is the value to verify

z would represent the statistic

Random variable: for this case represent the number of complaints in 2007

Population parameter: represent the real proportion of complaints in 2007 p

Hypothesis to verify

We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:  

Null hypothesis:p=0.23  

Alternative hypothesis:p \neq 0.23  

3 0
3 years ago
Through: (3, 5), slope = 5/3<br> Explain please
AveGali [126]

Step-by-step explanation how to get answer:

Slope is Rise over Run

Find point (3, 5) and go up 5 and over 3 from that point & mark it, keep going in that pattern until you have a line.

For going opposite ways, do the opposite function; go down 5 and left 3 to have a complete straight line.

6 0
3 years ago
I need help plz its a test i need to do good on it
Mumz [18]

Answer:

10, 20, 6

Step-by-step explanation:

10 times 2 is 20 which is greater than 10, 20 times 2 is 40 which is greater than 10, and 6 times 2 is 12 which is also greater than ten.

7 0
4 years ago
If an item is purchased at $500 and it’s value increases at a rate of 5% per year what is the value after four years
qaws [65]

The value of $500 after four years is $610

<u>Step-by-step explanation:</u>

It is given that, the value of $500 increases at a rate of 5% per year.

The exponential formula is given by y = ab^{x}.

where,

  • a is the initial  amount.
  • b is the growth factor .

The growth factor b is replaced by either (1 + r) or by (1 - r).

where, r is the rate per year.

b= (1+r) represents the increase in growth rate.

b= (1-r) represents the decrease in growth rate.

Here, the growth rate is increased. So the formula is given by y = a(1+r)^{n}

where,

  • The initial amount, a = 500.
  • Rate, r = 5% = 5/100 = 0.05
  • Number of years, n= 4.
  • y = value of the item after 4 years

<u>To find y value :</u>

⇒ y = 500(1+0.05)^{4}

⇒ y = 500 (1.05)^{4}

⇒ y = 500 \times 1.22

⇒ y = 610

 Therefore, the value of the item after four years is $610.

6 0
3 years ago
What is the center of a stem and leaf plot
maksim [4K]

Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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