The distance from the ground of a person riding on a Ferris wheel can be modeled by the equation d = 20 sin ) + 10, where d represents the distance, in feet, of the person
above the ground after t seconds. How long will it take for the Ferris wheel to make one revolution?
10 seconds
20 seconds
30 seconds
60 seconds

Which expression is equivalent to the expression shown?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)