Aconvenience store manager wants to find out
what type of music customers would like to hear
while they shop. the manager decides to survey
every twentieth person who enters the store in
one day.
is the type of
sampling method used.
a. simple random sampling
b. systematic random sampling c. stratified sampling d. cluster sampling

Idon’t know what the answer is i wish i could

11 mintues is the naswer

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 )