Write the expression sin(tan^-1)x) as an algebraic expression in x (without trig or inverse trig functions).

a. (sqrt (1+x^2))/ (x)
b. (1) / (sqrt (1+x^2))
c. (x) / (sqrt (1-x^2))
d. (x) / (sqrt (1+x^2))
e. (1) / (sqrt (1-x^2))

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

a

step-by-step explanation:

u take $30 minus $24. the answer/original($30)