Matrix l is a 1 ⨯ 5 matrix, matrix m is a 5 ⨯ 5 matrix, matrix n is a 1 ⨯ 1 matrix, and matrix p is a 5 ⨯ 1 matrix. find the dimensions of the sums below, if they exist. (if an answer does not exist, enter dne.)

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?