Edith's haircut costs $45. As a tip, she gives the hairdresser 15% of this amount. What is the total amount Harriet pays for her haircut, including tip? A - $67.50

B - $6.75

C - $51.75

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Find the domain of the following expression: 1/(√x)-2