Select all the correct answers. If matrix D is a 7 x 4 matrix, and the product of matrix D and matrix E, DE, exists, what could be the order of matrix E?
1- 4 x 5
2- 4 x 7
3- 4 x 4
4- 7 x 4
5- 7 x 5
6- 7 x 7

Which of the following is the rational exponent expression of 6 root f

Apair of ordinary dice is rolled. what is the probability that each die will show a number higher than 4. 1. (1/36) 2. (1/12) 3. (1/6) 4. (1/4) 5. (1/3)

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52