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Zepler [3.9K]
3 years ago
8

Match the following definition to the term.

Mathematics
1 answer:
Umnica [9.8K]3 years ago
3 0
We are asked to describe into one term the definition "procedure for selecting sample elements from a total set of observations." The answer is sampling method. Sampling method is a method used by researchers to evaluate a large size of correspondents or samples such that the representive sample is still considered. 
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Diana is painting statues. She has \dfrac{7}{8} 8 7 ​ start fraction, 7, divided by, 8, end fraction of a liter of paint remaini
anzhelika [568]

Answer:

Number of statues that can be painted are 17

Step-by-step explanation:

Initially Diana has \frac{7}{8} liters of paint remaining.

Every statue requires \frac{1}{20} liters of paint for painting.

We have to find how many statues we will be able to paint with this remaining paint.

To get the number of statues,

Number of statues = \frac{Paint remaining}{Paint required for 1 statue}

number of statues = \frac{\frac{7}{8} }{\frac{1}{20} }

                               = \frac{35}{2} = 17.5

Since the number of statues is not an integer the maximum number of statues that can be painted are 17.

3 0
3 years ago
Read 2 more answers
What is the area of<br> this triangle?
Romashka [77]

Answer:

84

Step-by-step explanation:

A=bh/2.

A=(21*8)/2

A=168/2

A=84

6 0
3 years ago
Read 2 more answers
Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0
Black_prince [1.1K]

Answer:

x = pi, 3pi, 5pi  etc

x = -pi, -3pi, -5pi etc

Step-by-step explanation:

cos^2 x + 2 cos x + 1 = 0

replace cos x with m

m^2 + 2m +1 = 0

solve by factoring  (this is a^2 +2ab+b^2 = (a+b)^2  where a =m and b=1)

(m+1)^2=0

take the square root of each side

m+1 =0

m=-1

now replace m with cos x

cos x = -1

take arccos  of each side

arccos cos x = arccos (-1)

x = pi, 3pi, 5pi  etc


3 0
3 years ago
What is the missing value?
lorasvet [3.4K]

Answer:

The missing value is 19.

Step-by-step explanation:

The equation is increasing by 2 and 17+2 equals 19.

4 0
3 years ago
How do i do this i dont know were to begin
loris [4]
Multiply everything by 4 so you get rid of the fraction
6 0
3 years ago
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