Answer:
120
Step-by-step explanation:
From 20, choose 3:
₂₀C₃ = 120
Here we use combinations instead of permutations because the order doesn't matter.
Answer:
, in words, 17 billion
Step-by-step explanation:
17000 million is the same thing as :
x
or 
x 
D since (-5 x -5) = 25 and (7 x -8) = -56. Add 25 and -56 and your answer is D. -31
Answer:
• logb(bx)=xforallxandblogb(x) =xforallx>0
Step-by-step explanation: