An athlete in training rides his bike 20 mi and the immediately follows with a 10 mi run. The total workout takes 2.5 hr. He also knows he bike about twice as fast as he runs determine his biking speed and running speed.

Me what is the value of x? showing work would be appreciated - ! : )

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}