Seth is training for a marathon he’s aleady running 2.5 miles 5 time a week. it takes him 30 minutes to run 2.5 miles he calculates how long will it take him to run the full 26 miles.
a. 5/30=26/x=156
b. 2.5/30=x/26 x=2.17
c. 2.5/30=26/x x=312
d. 2.5/26=x/30 x=2.88

Option C

Step-by-step explanation:

Given : Seth is training for a marathon he’s already running 2.5 miles 5 time a week. It takes him 30 minutes to run 2.5 miles

To find : How long will it take him to run the full 26 miles.

Solution :

Let x be the time taken to cover 26 miles.

It takes him 30 minutes to run 2.5 miles

For 1 minute it cover miles.

For x minute it cover 26 miles

For 1 minute it cover miles.

Equating the equation we get,

Therefore, Option C is correct.

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.