1) Given: m
EY (arc) =2mYI(arc
Prove: m∠K+m∠EXY= 5/2m YI (arc)
2) *Prove: If two circles are tangent internally and the center of the larger circle lies on the smaller circle, then any chord of the larger circle drawn from the point of tangency is bisected by the smaller circle.

Statement Reason Please (PS if you go to Russian math these are in the HW)

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons

How do i simply this radical expression?