Which of the following best describes the resultant image of a dilation when the scale factor is 1? The resultant image is the same size, but not the same shape as the pre-image.
The resultant image is the same size as the pre-image.
The resultant image is the same shape as the pre-image.
The resultant image is the same shape, but not the same size as the pre-image.

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

What is the circumference of a circle with an area of 50.24 cm²?

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.