Use the permutation formula
nPr = (n!)/((n-r)!)
20P15 = (20!)/((20-15)!)
20P15 = (20!)/(5!)
The final answer is choice A
Answer:
(9, - 2 )
Step-by-step explanation:
Given (- 3, 8 ) → (1, 10 )
That is the x- coordinate of the image is 4 more than the original.
The y- coordinate of the image is 2 more than the original, so
Translation rule is (x, y ) → (x + 4, y + 2 ), thus
(5, - 4 ) → (5 + 4, - 4 + 2 ) → (9, - 2 )
In fact, the least common multiple is 819. Glad to help. :)
Answer:
256
Step-by-step explanation:The total amount os students is 1640 which is equivalent to 100% so we get 50% of 1640 which is equall to 820 students after that we also find 35% of 1640 which is equall to 564 students. After that we sum them up which we get 1384 students and subtract it from 1640 and get 256 students.