Which function is equivalent to y= -cot(x)? a. y= -tan(x) b. y= -tan (x+ pi/2) c. y= tan(x) d. y= tan (x+pi/2)

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Find the nonpermissible replacement for binthis expression.b2/5b +5

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.