while completing an obstacle course a runner moves 30m north, 20 m south, then another 5m north at the end of the course, how far away from his starting point?

the correct answer is answer a. a mixture

no other options make sense

hope this

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  - sprinkles

for points guys

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".