For the first three questions
5/12 = 35/N
Rearrange: N = 35 / (5/12) = ( 35 / 0.4167 ) = N = 83.99
7/18 = N / 9
Rearrange: N = (7/18)* 9 = 3.5
(2/5) * 240 = 96
He spent $96 on supplies
Answer:
x=3 x = -8
Step-by-step explanation:
f(x) = (x-3)(x+8)
To find the zeros, set the equation equal to zero
0 = (x-3)(x+8)
Using the zero product property
0=x-3 0 = x+8
x=3 x = -8
Answer:
Step-by-step explanation:
%decrease is given by = decrease/actual value ×100
Then in this case
The value decrease from 180,000 to 165,000
Then, the decrease is 180,000-165000=15,000
The actual value was 180,000
Then %decrease = decrease/ actual value × 100
%decrease= 15,000/180,000×100
%decrease=8.33%
Decrease = 8.33%
Answer:
Step-by-step explanation:
Standard form for this circle is
Answer: I and III
Step-by-step explanation:
We observe in the case provided that the researcher, who has no interest in the population to intervene, is going to carry out surveys to assess whether the neighborhood is a good place to live, obtaining the following conclusions:
i. The Minneapolis Resident Survey was an observational study.
ii. The Minneapolis Resident Survey was an experiment.
iii. The figure 50.1% is a descriptive statistic for the sample.
iv. The figure 50.1% is a statistical inference for the population.:By estimating the sample, obtained by a lower percentage of the total of the respondents, it is known that with a 95% confidence interval that the rating obtained from the respondents considering that the neighborhood is a good place to live was found between 0.44 and 0.50, taking this interval as a statistical inference for the population.
The correct answer is I and III, since in this study no interventions were made to the population and only one observation of a characteristic of the neighborhood was made and in III we know that the descriptive statistic only describes data and summarizes it, which is a of the ways to display the data from the descriptive survey.