Respuesta :

newsreportchannel77

Answer:

Step-by-step explanation:

x+2x+x+10=90,

4x=80

x=20

reagan8875

Answer:

A

Step-by-step explanation:

it is a 90 degree angle so you have to figure out what something plus 10 equals and then multiply the x by 2 so basically it's a solve and answer or redo it until you get 90° for your total