In the figure below, lines m and n are parallel. What is the measure of angle y?

B

Step-by-step explanation:

y and x + 20 are corresponding angles and are congruent, then

y = x + 20 → (1)

2x - 10 and y are adjacent angles and supplementary, sum to 180°, so

2x - 10 + x + 20 = 180, that is

x + 10 = 180 ( subtract 10 from both sides )

x = 170 ( multiply both sides by 2 to clear the fraction )

5x = 340 ( divide both sides by 5 )

x = 68

Substitute x = 68 into (1)

y = (68) + 20 = 34 + 20 = 54° → B

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.

17   x 256=4352

sorry if this is wrong, i'm new.

step-by-step explanation: