ElectricPavlov

Agree ...construction of angle bisector.

Letters are used as variables in Algebra....      3x3y   has two variables in ONE term   there are a total of 5 terms in this expression, four of which are variable terms....and ONE is a constant : 9

Well.....that IS a guess....but the constant is  '4'

3x is the same as   3 times x ...a product    so   the expression is the sum of   3 products

Use z-score tables to find out how many are less than 37.....then use table to find out how many are less than 29       subtract the #37 - #29

37   is 2 Standard deviations ABOVE 33     z score 2   corresponds to .9772

29   is 2 standard deviations BELOW 33     z score -2  corresponds to .0228

(.9772 - .0228) 400 = ~ 382     or     380 members

https://web2.0calc.com/questions/which-package-design-will-cost-the-company-less-to

99 perhaps?

https://web2.0calc.com/questions/help-please_29047#r1

176 pounds - 165 pounds =  11 pounds      this is      11/ 11.6  standard deviation less than the mean = - .9483 z-score =~ .95 z score

Look at negative z-score table for the value under -.95 z-score  to find the fraction .1711

.1711 x 120 members = 20.53 members are LESS than 165#   that means      100 members weigh MORE than 165#

Let's see:

Volume of pecan log   pi r^2 h = pi 3^2 (1) = 28.27 ft^3

     weight of pecan log      Volume x density  =   28.27 ft^3  x 47 lbs/ft^3  = 1357.2 lbs        Nope...it is not 'D'...try again!