Justin's straw design is shown to the right. He doesn't know the measure of the angles in degrees but the measures of three of the angles in his figure are given as algebraic expressions. The measure of angle A is (2x + 10)° and the measure of angle B is (3x + 30)°.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter12: Angle Relationships And Transformations
Section12.1: Angle Relationships
Problem 31E
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Justin's straw design is shown to the right. He doesn't know the measure of the angles in
degrees but the measures of three of the angles in his figure are given as algebraic
expressions. The measure of angle A is (2x + 10)° and the measure of angle B is (3x + 30)°.
3. Determine the measure of angle A, in degrees.
Explain how you used angle relationships to determine
your answer.
Show your work.
(2r+ 10)°
(3x + 30)°
5x+0
Justin's
gn
mLA =
Explanation:
supplementany
Transcribed Image Text:Justin's straw design is shown to the right. He doesn't know the measure of the angles in degrees but the measures of three of the angles in his figure are given as algebraic expressions. The measure of angle A is (2x + 10)° and the measure of angle B is (3x + 30)°. 3. Determine the measure of angle A, in degrees. Explain how you used angle relationships to determine your answer. Show your work. (2r+ 10)° (3x + 30)° 5x+0 Justin's gn mLA = Explanation: supplementany
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