Riya rides his bike 63 miles in 270 minutes. What is his average speed in miles per hour? Be sure to include the equation for speed in your answer. will mark as brainliest

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

69 is the correct math for the amino acids

i wish i could with all of them i can barley see the first one so here's the answer to the first one b