Several years ago, 47% of parents who had children in grades k-12 were satisfied with the quality of education the students receive. a recent poll asked 1 comma 015 parents who have children in grades k-12 if they were satisfied with the quality of education the students receive. of the 1 comma 015 surveyed, 472 indicated that they were satisfied. construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed.
x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x
last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x
the answer is:
the correct option:
to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.
we are given the equation:
then, using placing logarith with base 7 on both sides of the equation, we have:
so, rounding the obtained result to two decimal places (nearest hundreth), we have:
hence, we have that the correct option:
have a nice day!