Answer:
omg
Step-by-step explanation:
omg omg omg omg omg what is this
Set up the ratios as proportional fractions:

We can simplify the first fraction to make the problem easier. Both the numerator and denominator of the first fraction can be divided by 3:


Both fractions now have the same denominator. Since both fractions have to equal each other, the numerators will also be the same. Therefore,
x = 4.
Answer:
D)We are 95% confident that the proportion of adults (ages 17‐26) who attended college during the past 4 years and say that alcohol and drug use at their school is a big problem is between 53% and 59%.
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
In this question:
95% confidence interval is (0.53, 0.59).
This means that we are 95% sure that the true proportion for the population of adults who attended college who say that alcohol is a big problem is between 0.53 and 0.59. This means that the answer is given by option D.
Answer: x = 3.05
Step-by-step explanation:
The picture shows the graphic solution using technology.
Verifying the approximate solution found on the graph.
x = 3.05
0.5x³ - 4 = 3x + 1
0.5(3.05)³ - 4 = 3(3.05) + 1
0.5*28.373 - 4 = 9.2 + 1
14.2 - 4 = 10.2
10.2 = 10.2 (ok)