Find the perimeter of the triangle ABC A. 9 √84
B. 9 √2+√82
C. 18+ √82
D. None of the above

Can y’all explain it too please

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Write the equation in logarithmic form m^x=n

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =