Dan is preparing for a 10-mile race. He will run the first 5 miles at an average speed of 6 miles per hour,
the next 3 miles at an average speed of 8 miles per
hour, and the final 2 miles at an average speed of 10
miles per hour. How many hours, rounded to the
nearest hundredth of an hour, will it take Dan to run
the race if he follows his plan?

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

the answer is a and d