Male and female students were surveyed about dancing and playing sports. They had the following preferences: Do you prefer dancing or playing sports?

Playing sports
Dancing
Row totals
Male students
0.25
0.27
0.52
Female students
0.17
0.31
0.48
Column totals
0.42
0.58
1
Which of the following is a two-way conditional frequency table for gender?

Ineed on quadratic equations to solve problems

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 )