Which statements must be true?

select each correct answer.

cb = ba

cb|xy

- ab || xz

ca= yz

xy = 2ca

If 25% of y is 30, what is 60% of y?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position