Combine the following expressions.
3\sqrt{27x^3}-2\sqrt{12x^3}
a) 19x
b) 5x
c) 13x

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811