Six less than one-third of the sum of a number and four is negative two.

1/3(n + 4) - 6 = -2 <== ur equation
1/3n + 4/3 - 6 = -2 ...multiply by 3
n + 4 - 18 = - 6
n - 14 = -6
n = -6 + 14
n = 8 <== ur number

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )