The first question, it is decreasing because the slope is negative.
All angles add to 180 in a triangle. So 180 - 102 - 31 =47
They are in different value places. The 9 for the first number is in the hundreds place and the 9 for the second number is in the tens place
Answer:
P(9,7) = 181440
Step-by-step explanation:
The roles are distinct so order matters. So we must use the permutation formula.
P(n,r)=n!/(n−r)!
P(9,7) = 9! / 2! = 9*8*7*6*5*4*3 = 181440
