Answer:
C. 50
Step-by-step explanation:
x+y=90
x=2y-30
90-y=2y-30
3y=120
y=40
90-40= 50
Answer:1-2-3-4-5-6-7-8-9-10
Step-by-step explanation:
Achievement Unlocked:Cheat The System
Answer:
11+(2+y)
Step-by-step explanation:
The associative property says that you can move numbers inside the parentheses around if all the numbers are the same operation in a simple sense
So that means in this case: 2+(11+y)
We can switch the 2 and the 11 around since they are both the same, addition.
11+(2+y)
Answer:
there is no greater altitude than 11 km
Step-by-step explanation:
