Answer:
I believe that 11 students ate only the cookie.
Answer:
w = 0
Step-by-step explanation:

(-y+5x3)+(7.2y-9)=6.2y+n
(-y+15)+(7.2y-9)=6.2y+n
since you're adding the two parentheses, you don't need to have them there
-y+15+7.2y-9=6.2y+n
7.2y-y +15-9 =6.2y+n
6.2y + 6 =6.2y+n
6.2y - 6.2y -n = -6
-n=-6
n=6
Answer:
9x10^-4
Step-by-step explanation:
Answer:
90°
Step-by-step explanation:
90°