Answer:
C) 9n - 3
Step-by-step explanation:
<em>make an expression</em>
2n - 1 - (-7n + 2)
<em>open the parenthesis</em>
2n - 1 + 7n - 2
<em>combine like terms</em>
9n - 3
Sum of Interior Angles
The interior angles of any polygon always add up to a constant value, which depends only on the number of sides. For example the interior angles of a pentagon always add up to 540° no matter if it regular or irregular, convex or concave, or what size and shape it is. The sum of the interior angles of a polygon is given by the formula:
sum = 180 ( n − 2 )
<h3>
Answer: x = 65</h3>
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Explanation:
We have a pair of vertical angles. The angles do not need to align vertically to be considered vertical angles. They simply just need to be opposite one another in this X configuration as the diagram shows.
Vertical angles are always congruent.
Set the expressions equal to one another. Solve for x.
2x+15 = 145
2x = 145-15 ... subtracting 15 from both sides
2x = 130
x = 130/2 .... dividing both sides by 2
x = 65
9514 1404 393
Answer:
neither
Step-by-step explanation:
Solving the first equation for y gives you ...
y = 1/2x -2
The slope of each line is the coefficient of x, 1/2 or 2. The slopes of 1/2 and 2 are not equal and are not opposite reciprocals. The lines are neither parallel nor perpendicular.
First, convert 3 into a fraction with denominator 8.
(3 pizzas)(8/8 pizzas)=24/8 pizzas
Then, divide 24/8 pizzas by 2/8 pizzas per 1 person.
(24/8 pizzas)(2/8 pizzas/person)
Dividing by a fraction is the same as multiplying by the reciprocal:
(24/8)/(2/8)=(24/8)×(8/2) the 8s cancel and you are left with 24/2=12
3 pizzas will feed 12 people.