What is a name for the marked angle? A
\angle{EAD}∠EADangle, E, A, D

(Choice B)
B
\angle{DAC}∠DACangle, D, A, C

(Choice C)
C
\angle{BCA}∠BCAangle, B, C, A

(Choice D)
D
\angle{CAE}∠CAE

Please answer this fast! :D

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.