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Marta_Voda [28]
2 years ago
14

Draw a number line model to determine -9 + (-2)

Mathematics
2 answers:
belka [17]2 years ago
6 0
The answer would be -11
vlada-n [284]2 years ago
5 0

Answer:

I put a photo containing what you should write

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A student in a wildlife biology class wants to determine the abundance of a rodent species in a local nature preserve, divided i
LekaFEV [45]

Answer:

c. Cluster sampling

Step-by-step explanation:

Taking into account that the exercise researcher is looking with limited resources to study a population that is divided, her best option is cluster sampling, which is a method applicable to this type of population, we could select in each group randomly her sample, the observational study is discarded because she does not have much availability of time or resources, nor would the stratified study be useful because she should select subgroups and create them to take samples and this would take more time and resources and sampling systematic is not adequate because it must have all the individuals and after having the list select the sample, but as we know, it is a process that will study the number of individuals so this option is not feasible.

5 0
3 years ago
Read 2 more answers
A meuseum had x visitors on friday. On Saturday it had 150 more visitors than it did on friday. The total number of visitors on
ANTONII [103]

Answer:

75 people.

Step-by-step explanation:

If Friday is x, then Saturday is 150 + x. The number of people on Sunday then is (Friday + Saturday)/2, thus (x + (150 + x))/2. This then simplifies to (x + 150 + x)/2 ---> (2x + 150)/2 ---> 2x/2 + 150/2 ---> x + 75. So, Friday is x and Sunday is x + 75, to find out how many more visitors the museum have on Sunday than Friday, you subtract the two numbers. (x + 75) - x = 75.

8 0
3 years ago
What is the product 4n/4n-4 n-1/n+1
olga_2 [115]
4n/4n-4 × n-1/n+1
= 4n(n-1)/(4n-4)(n+1)
= (4n^2 - 4n)/(4n^2 + 4n - 4n-4)
= (4n^2 - 4n)/(4n^2 - 4)
= 4(n^2 - n)/4(n^2 - 1)
=(n^2 - n)/(n^2 - 1)
5 0
3 years ago
Select two numbers in which the value of the 8 is 10 times the value 8 in 563840
SVETLANKA909090 [29]

Answer:

768,543, and 8,451

Step-by-step explanation:

The 8 is in the hundreds place, so when multiplied by 10 it would be in the thousands place.

7 0
3 years ago
Which of the following is the result of the equation below after completing the square and factoring? x^2+3x+8=6
Inessa05 [86]

Answer:

D

Step-by-step explanation:

6 0
3 years ago
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