Which shows a recursive and an explicit formula for a sequence whose initial term is 14 and whose common difference is −4? a. a(1) = 14; a(n) = (n − 1) −4; a(n) = 14 + (n − 1)(−4) b. a(1) = 14; a(n) = (n + 1) −4; a(n) = 14 + (n − 1)(−4) c. a(1) = 14; a(n) = (n − 1) − 14; a(n) = 14 + (n − 1)(−14) d. a(1) = 14; a(n) = (n + 1) − 14; a(n) = 14 + (n + 1)(14)

no one knows lol

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: