Answer:
7
Step-by-step explanation:

I hope it helped you
Answer:
4
Step-by-step explanation:
x^2/ y^4
Let x=8 and y=2
8^2 / 2^4
PEMDAS says powers first
64 / 16
Divide next
4
Answer:
-b=11
Step-by-step explanation:
Nothing else is equal to a number except its self
Answer:
area of rectangle=l×b=2.4×5.8=13.92cm²
The answer is -5. Just plug in -5 to check and x will equal 3.