Answer:
?
Step-by-step explanation:
Answer:
Option C 
Step-by-step explanation:
<u><em>Verify each expression</em></u>
case A) we have

In this expression the term of n is 6n
so
has a coefficient of positive 6
case B) we have

In this expression the term of n is -5n
so
has a coefficient of negative 5
case C) we have

In this expression the term of n is n
so
has a coefficient of positive 1
case D) we have

In this expression the term of n is -n
so
has a coefficient of negative 1
In the rhombus, the diagonals are perpendicular.
We know, the sum of the measures of the triangle is equal 180°.
Therefore we have the equation:

<em>combine like terms</em>

<em>subtract 75 from both sides</em>
<em>divide both sides by 5</em>

<h3>Answer: x = 21°</h3>
Answer:
it is b
Step-by-step explanation:
I did it on ed 2020