5. Samantha had 75 necklaces to sell. By the end of the first week, there was
only 57 necklaces left. By the end of the second week, there was only
38 necklaces left.
a) Find the percent decrease in the number of necklaces by the end of
the first week.
b)
Find the percent decrease in the number of necklaces from the end
of the first week to the end of the second week.

73.0769230769% of the games were won

do i do it on a graph?

step-by-step explanation:

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,