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rosijanka [135]
3 years ago
14

Determine o valor da expressão: -1 + 6 x (7 – 4 ÷ 2)​

Mathematics
2 answers:
frosja888 [35]3 years ago
6 0

Answer:

29 is the correct answer. Hope you like my answer.

Neko [114]3 years ago
5 0
The answer would be 29
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Suppose a researcher is testing a new vaccine on mice to see how well it prevents the flu virus. The lab has 1000 mice available
AfilCa [17]

Solution :

Sampling may be defined as the technique of selecting the individual members or the subset of the population to make a statistical inferences and estimates the characteristics of the entire population.

There are several sampling methods. This includes : Systematic sampling, clustered sampling, stratified sampling, quota sampling, judgement sampling, random sampling, convenience sampling and many more.

In the context, the sampling methods for each of the descriptions are :

a). The researcher use computer program to randomly choose a sample of 30 mice of the 1000 mice for using her study

   --- Simple Random

b). The researcher chose the 1st 30 mice as she can reach the door to the mouse room

   --- Convenience sampling

c). The mice those whose are kept in the cages on 10 various shelves in mouse room. The researcher or the experimenter chose the three mice from each shelve.

  ---- Stratified sampling

d). Each of the cage have 5 mice and the researcher randomly chooses 6 cages for her study

----- Cluster sampling

e). The researcher generates the list of the identification numbers which has been sorted from the smallest to the largest. The researcher randomly picks 1 mouse form the list and selects every 4 mouse until the researcher has 30 mice.

 ---- Systematic sampling

7 0
3 years ago
How can you use two-way tables to solve for probabilities?
Alona [7]

Answer:

A two-way table is a way to organise data about two specific variables. This example shows a two-way table where the variables are gender and favourite sport.

Step-by-step explanation:

8 0
3 years ago
Solve for the value of r. (8r+6)° (9r-7)​
lukranit [14]

Answer:

r = 13

Step-by-step explanation:

these angles are vertical and are congruent

8r + 6 = 9r - 7

6 = r - 7

13 = r

8 0
3 years ago
F(n)=n-2<br> g(n)=4n-1<br> f{g(n)}=?
Dennis_Churaev [7]

9514 1404 393

Answer:

  f(g(n)) = 4n-3

Step-by-step explanation:

f(g(n)) = f(4n -1) = (4n -1) -2

f(g(n)) = 4n -3

3 0
3 years ago
I need help me pls ...........
Alenkasestr [34]

Answer:

Step-by-step explanation:

See attachment

4 0
3 years ago
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