Given the word "friend", how many different ways can the letters of the w
erent ways can the letters of the word be arranged
(a) the first letter must be an “n”?
(b) the first letter must be a vowel?
(c) the word letters begin with "r" and end with "e"?

The stairs leading from the ground to the entrance of a plane forms a right triangle with the ground. if the distance of the stairs measures 22 feet and the ground distance measures 11 feet, how high is the entrance to the plane from the ground? which diagram represents this scenario? / 22ft © 22ft 11 ft 11 ft 22 it