If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°? a)9π feet
b)29π feet
c)95π feetd)92π feet

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.