Question

If the book is 245 pages, how many minutes will it take him to finish? ​A student reads at a constant rate in her chapter book when the Red Fern Grows. this can be described by the equation = Y/2x

Answer 1

The provided equation for reading speed is incomplete to determine the reading time for a 245-page book. For the landscaping company, after 20 hours 1326 acres are left, after 100 hours 1230 acres are left, and it takes 1125 hours to mow all acres. A hypothesis test is needed to examine the statistics claim about study time.

Step-by-step explanation:

The equation provided, ë = Y/2x, does not give enough information to determine how many minutes it will take for the student to finish a book of 245 pages. We need additional information, such as the number of words or pages the student can read per minute or per hour.

Now, to address questions from the given information about a landscaping company: Using the equation ß = 1350 - 1.2x, where ß represents acres left to mow, and x is the number of hours of work:

1. Acres left to mow after 20 hours: ß = 1350 - 1.2(20) = 1350 - 24 = 1326 acres.
2. Acres left to mow after 100 hours: ß = 1350 - 1.2(100) = 1350 - 120 = 1230 acres.
3. Hours to mow all the lawns (ß = 0): 0 = 1350 - 1.2x, thus x = 1350/1.2 = 1125 hours.

For the statistics question, given a mean study time of 137 minutes and a standard deviation of 45 minutes, we would use a hypothesis test to determine if the student academic group's claim of at least 2.5 hours (150 minutes) of study time is correct at a 0.01 level of significance.