Assume that private preschool costs in the city are normally distributed. the average amount that NYC parents pay for private preschool is mean= 27,500 a year with standard deviation= 7,740 a. find the probability a preschool in NYC is less than 20,000 a year
b. find the probability that for three families the average amount a preschool in NYC will cost them will be more than 40,000 a year
c. find the probability that a preschool will be between 18,000 and 35,000 a year
d. find the probability that for 5 families the average amount a preschool in NYC will cost them will be less than 32,000 a year​

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.

the photograph is photographer and- in the process- ourselves.

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb