Answer:
Marta
Step-by-step explanation:
We are given that

We have to find who is correct and explain.
We know that
Equation: It is mathematical sentence that combines numbers and variables which shows the equality of two expressions.
Example:

Expression: It is mathematical phrase that combines numbers and variables
using mathematical operators.It can be evaluated but not solved.
Example:

By definitions

It is in equation form.
Therefore, Marta is correct.
8/x= 2/5
8•5= 2•x
40=2x
40/2= x
20= x
Your answer is this
13,700
Because
x=y
Answer:
StartFraction 2 A Over b EndFraction = h
Step-by-step explanation:

The sum of the bottom interior angles is equal to the sum of the given exterior angles at the apex. (Both sums differ from 180° by the size of the interior apex angle.)
The angle labeled x is 51°.