What is the value of x?

a pair of intersecting lines is shown. the angle above the point of intersection is labeled left parenthesis 7 x minus 8 right parenthesis degrees. the angle directly opposite below the point of intersection is labeled left parenthesis 6 x plus 11 right parenthesis degrees.

a. –19
b. 125
c. 19
d. 55

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?

Which are the possible side lengths of a triangle?