a training field is formed by joining a rectangle into semicircles, The rectangle is 87m long and 57m wide. What is the length of a training track running around the field? ( use the value 3.14 for π, and do not round your answer )

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?