lawrencemadisopdb8ld lawrencemadisopdb8ld

10-11-2018
Mathematics

contestada

In the diagram, what is the measure of angle 1? (image below)

A. 15°
B. 45°
C. 135°
D. 125°

In the diagram what is the measure of angle 1 image below A 15 B 45 C 135 D 125 class=

Respuesta :

Thisguy248 Thisguy248

10-11-2018

3x + 9x = 180

12x = 180

x = 15

Angle 1 = 3x

3(15) = 45

B. 45°

Answer Link

vinavratil vinavratil

10-11-2018

T he answer is B 45 degrees

explanation

set up an equation

3x + 9x = 180

solve for x

x = 180/12 = 15

so, the angle 9x is 135 degrees

angle 1 is supplementary so, :

<1 = 180 - 135 = 45

Answer Link

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