Someone help this question is hard and really not easy please help

51

it says UVW congruent to EFC

each letter here shows you where they match

u and e matches

v and f matches

w and c matches

look for the order they put the letters and they will match their corners

they are asking for FEC

the middle letter tells you the corner they are looking for, which is corner E

since E and U match, E must be 51 ° just like U

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.