Which of the following is a factor of x2 − 21x + 110? a. x + 11 b. x − 10 c. x − 5 d. none of the above

Correct answer would be b. x-10. You can check this by writing out (x-10) and writing the other factor out. Then simplify (factor) out everything and you will get x^2 - 21x + 110.

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 )