Step-by-step Answer:
Since there are no repetitions in the five letters of the word ZEBRA, the number of permutations is 5! = 120 = 5*4*3*2*1.
Answer:
x = a/2 - b/2
y = a/2 + b/2
Step-by-step explanation:
x + y = a
x + b = y
x - y = -b
x + y = a
x - y = -b
________--
2y = a + b
y = a/2 + b/2
x + y = a
x - y = -b
________+
2x = a - b
x = a/2 - b/2
Answer:192 r 9
Step-by-step explanation: