Evaluate the expression below when x=3 and y=-5. x^2+4xy SHOW YOUR WORK
-54
-51
69
1

6

Step-by-step explanation:

-4xy

-4(1/2)(-3)

-4(-1.5)

6

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.

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.