Solve the system of equations.
3x + 2 = –18 + 5y
8y – 6 = 4x + 9y
y – 10 = 3x + 2z

a. (–2, 2, –1)
b. (–2, 0, –11)
c. (–2, 11, 7)
d. (–1, –4, –8)

820,000 is the answr

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 )