The record time for running the boston marathon is 2.12 hours at an average speed of 12.5 miles per hour. what distance does the boston marathon approximately cover?

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Find the cosine function that is represented in the graph.