Sat scores were originally scaled so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. use the empirical rule to estimate the probability that a randomly selected student gets with a section score of 700 or better.
a. 2.5%
b. 95%
c. 5%
d. 97.5%

It is the top one. the answer is -7. that is smallest

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 )