Answ Write an equation to describe the sequence below. Use n to represent the position of a term
in the sequence, where n = 1 for the first term.
4, 8, 16, ..

Step-by-step explanation:

this is a geometric sequence and to get each next number you multiply by two so becomes put 2 in for b and you get .You can put 4 in for a because its the first number of the sequence.

coins of silver or gold

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.

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step-by-step explanation: