If the ln series is to be used in computing ln2 with an error less than 10^-7, find the number of terms needed to be used from the series.

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota