ElectricPavlov

If 1/5 ARE immigrants , then the rest, 4/5 are NOT immigrants

4/5 * 40 == 32 students are NOT immigrants

3 dozen / 5 people   =   3/5 dozen per person

No.... I meant 15/2    THIS question says the pizza is 15 inches  .... not 16 inches.

A pizza has a diameter of 15 inches. If the pizza is cut into 6 equal pieces, what will be the area of each piece?

Look for z - score corresponding to    .1600    ( or approximately   I find   - .99  ) 

    How many Standard Deviations is this ?  (.99)         multiply the S.D. * 5    and subtract from 80 to find the score ...   can you finish...?

35  is  2 standard deviations BELOW the mean of 43

51  is  2 standard deviations ABOVE the mean of 43

find z - score for + 2 S.D.     then subtract the z-score for  - 2 S.D.   

   This is the percentage ( in decimal form)    of 200 members between the ages of 35 and 51        Can you finish?

176 - 165 = 11 pounds        11/11.4   standard deviations below the mean = .9649 S.D. below the mean  (z-score)

z-score:     -.96 =  .1685    or ~ 17%   are below 165    so the rest are above   or   83 % 

Spring door stop

Yikes !!!!!!!