How can you tell if a number is divisible by 4?

a. the sum of the digits is divisible by 4.
b. the last two digits of the number are divisible by 4.
c. the first digit is 4.
d. the last digit is even.

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?