Write an algebraic expression that is equivalent to the expression cot(arctan x)

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?