PLS HELP IM SUPPOSED TO ANSWER THEM IN SCIENTIFIC NOTATION BUT I DON'T UNDERSTAND THESE ONES
PLS NO TROLLS

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?