How do i solve the equation 72= -6r

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

The trigonometric ratios sine and secant are reciprocals of each other

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.