David told Luis that he was going to make a triangle with angle measures 40 degrees, 20 degrees, and 90
degrees. Luis said he would not be able to make it.
Who is correct?

Luis.

Step-by-step explanation:

180-90-20-40= 30

A triangle's angles have to make up 180 degrees, thus Luis is correct.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

3,750 deer

step-by-step explanation:

1,500 is 15 times larger than 100

lets make 250 15 times larger.

3750 deer