Some expeert me on this plss

reasons for the correct statements

given
sss congruence postulate
definition of congruent statements
reflexive property of congruence
definition of congruent angles
perpendicular bisector theorem

Long division the problem is 40 ➗ 348 = ?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189