Help Please

explain how to do

x = 110

Step-by-step explanation:

all angles of the triangle MUST add up to 180 degrees.

45 + 65 = 110

180 - 110 =  70

since x is sittling on a 180 degree angle, the sum of 70 and x must equal 180 too

180 - 70 = 110

70°

Step-by-step explanation:

we know that the angles in a triangle are equal to 180° and that a straight line has 180°.

180-(65+45)=110

this equation should give us the angle opposite x(the supplementary angle)

180=the sum of the angles on a straight line so

180-110=70

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.