Show your work and explain your answer how u did it 4x49÷5+78=

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.