Asinger has memorized 12 different songs. if every time he performs he sings any three of these songs, how many different performances can he give?
a- 4
b- 12
c- 110
d- 220
e-440

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c