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Determine the value of z in the figure answers: z = 40° z = 90° z = 20° z = 45°

Determine the value of z in the figure answers: z = 40° z = 90° z = 20° z = 45°-example-1
User Plmk
by
6.9k points

2 Answers

5 votes

Answer:

20 degrees

Explanation:

This is a linear pair, whose sum always equals 180 degrees,

hence, we can set up the equation:

2z+140=180

2z=180-140

2z=40

z=40/2

z=20

Thus, the answer is 20 degrees

User BentoumiTech
by
6.6k points
5 votes

Answer:

z = 20°

Explanation:

The two angles form a straight line so they add to 180 degrees

2z+ 140 = 180

Subtract 140 from each side

2z+140-140 = 180-140

2z = 40

Divide by 2

2z/2 = 40/2

z = 20

User Abhishek Ghosh
by
7.5k points