The radius of OB is 4 centimeters and the circumference of OA is 20T
centimeters. Find CD.

Write a positive or negative number to represent each situation. a. you win 150 dollars in a contest b. a loss of 15 yards in a football game c. 75 feet below sea level d. 35 degrees above 0 f e. a debt of 24.75 dollars

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.