She ate 10 cookies
1/3 of 30 is 10
Answer:
pretty sure its B
Step-by-step explanation:
78/120 = 0.65
0.65 = 65%
Hope this helped☺☺
Answer:

Step-by-step explanation:
The given equations are:
1st: -3x=42-16y
2nd: 14x=76-16y
Subtract the first equation from the second one:
14x--3x=76-42-16y--16y
14x+3x=34-16y+16y
17x=34

We plug in x-value into the second equation to get:
14(2)=76-16y
14x=76-32
28-76=-16y
-48=-16y
Divide both sides by -16
y=3
Perimeter = 2*(L + W) = 2*(12 + 5) = 2*17 = 34
Perimeter = 34 m
Option D.