What is the best estimated for the sum of 3/8 and 1/12

Measures of the angle of r, 31 s (x+4) t (3x+9)

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)