danielahchf danielahchf

02-01-2019
Mathematics

contestada

What is the value of x?

26
28
30
32

What is the value of x 26 28 30 32 class=

Respuesta :

sqdancefan sqdancefan

04-01-2019

Answer:

x=30

Step-by-step explanation:

The sum of angles of a triangle is 180°, so in ΔRST ...

∠R +∠S +∠T = 180°

(2x+10)° +(2x+25)° +(x-5)° = 180°

5x +30 = 180 . . . . . divide by °, collect terms

5x = 150 . . . . . . . . . subtract 30

x = 30 . . . . . . . . . . . divide by 5

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