Amy operates a coffee kiosk and is blending her special house coffee. She is mixing Kenya beans that cost $9.00 per pound with Colombia beans that cost $7.50 per pound to create a 30-pound blend that sells for $8.50 per pound. How many pounds of Kenya beans and how many pounds of Colombia beans does Amy need to use to create her blend? a. 20 lbs. of Kenya coffee beans and 10 lbs. of Colombia coffee beans
b. 5 lbs. of Kenya coffee beans and 25 lbs. of Colombia coffee beans
c. 15 lbs. of Kenya coffee beans and 15 lbs. of Colombia coffee beans
d. 10 lbs. of Kenya coffee beans and 20 lbs. of Colombia coffee beans

true

step-by-step explanation:

it would be 6xy and -16xy.

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

7

step-by-step explanation: