The sum of angles of a pentagon is 540°, so x must be chosen to make that so.
85 + 110 + x + 120 + 120 = 540
540 -435 = x = 105
_____
The formula usually used to find the degree measure of the internal angles of an n-sided polygon is (n -2)·180°. For n=5, this is 3·180° = 540°.
We need to find the increasing function with constant slope.
Let us check each option one by one.
A) 6x -5y =10.
Let us solve it for y to get slope-intercept form
6x-5y =10.
-5y =-6x +10.
y =6/5 x-2.
<em>Slope is 6/5 positive, therefore, it's an increasing function.</em>
<em>A linear function always has a constant slope.</em>
<h3>Therefore, correct option is option A.</h3><h3>A. 6x -5y =10</h3>
All other options are incorrect.
Answer:
55 hours
Step-by-step explanation:
Write the problem as an equation.
4290-78x=0
Where 'x' is each hour the pond is being drained.
Then, solve.
4290=78x Add 78x to each side of the equation
55=x Divide both sides by 78
