Answer:
Many techniques will simplify your work as you perform operations with algebraic fractions. As you review the examples, note the steps involved in each operation and any methods that will save you time.
Any polygon given by a list of 2D vertex coordinates has area given by the shoelace formula.
That's the absolute value of half the sum of the cross products of the sides. We form the table of the vertices. We include the first vertex at the end, then calculate the cross product of the side, (a,b) then (c,d) gives cross product ad-bc.
cross product
-4 3 0
0 0 0
6 8 6(11)-8(2) = 66 - 16 = 50
2 11 2(3) - (11)(-4) = 50
-4 3
So the area is (1/2)(50+50) = 50
Answer: 50
$9.50 because $52.80 time 1.18 gives you $62.30 so when you subtracts $52.80 from that you get your answer.
C I think if it’s wrong I’m sorry
Answer: 19 people will be represented by an angle 152 degrees.
Step-by-step explanation:
Set up a proportional relationship to solve for this
Cross multiply
360y = 6840 Divide both sides by 360
y = 19