Tiyana paid $117.50 for 18 identical flash drives. Which is the best estimate for the cost of each flash drive? $6
$10
$12
$60

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Acircle has a circumference of 28.36 units what is the diameter of the circle

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle