4 years ago

PLEASE HELP 10 POINTS

Mathematics

1 answer:

trapecia [35]4 years ago

6 0

Answer:

Angle 1 and Angle 3 are both 38 degrees. Angle 2 is 142 degrees.

Step-by-step explanation:

Angle 1 and 3 are the same size and both supplementary to Angle 4.

180 - 142 = 38 degrees

Angle 2 and Angle 4 are going to be the same size since they are vertical angles so 142 degrees

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If AD = 5x - 7 and AB = 2x +11, what is the length of AD

Norma-Jean [14]

Answer:

The length of AD is 6.

Step-by-step explanation:

Solve.

$5x - 7 = 2x + 11 \\ \frac{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: - 2x \: \: \: \: \: \: = - 2x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }{3x - 7 = 11} \\ \frac{ \: \: \: \: \: \: \: \: \: + 7 = + 7}{3x = 18} \\ \\ \frac{3x}{3} = \frac{18}{3} \\ \\ x = 6$