15 points and will mark brainliest

what is the area of the composite figure whose vertices have the following coordinates?

(−8,3) , (−4,4) , (−1,1) , (−4,−2) , (−8,−2)

enter your answer in the box.

2.the coordinates of the vertices of a polygon are (−2, −1) , (2, 3) , (4, 3) , (4, −3) , and (−1, −4) .

round each side length to the nearest tenth of a unit.

enter the perimeter of the polygon in the box.

1) The area of the composite figure whose vertices have the coordinates  (−8,3) , (−4,4) , (−1,1) , (−4,−2) , (−8,−2) is (20 + 4 + 3) = 27 unit²

Step-by-step explanation:

1)   Given : coordinate of a composite figure (−8,3) , (−4,4) , (−1,1) , (−4,−2) , (−8,−2)

We have to find the  area of the composite figure whose vertices have the given coordinates.

We first plot the given coordinate and obtained the figure as shown in attachment below.

Join points (−8,3) and (−4,−2)

and   (−4,4) and  (−4,−2)

Thus, we have obtained three triangles.

Area of triangle having coordinates is given by ,

Thus, for triangle with coordinate  (−8,3) ,(-8, -2)and (−4,−2)

Area is given by

thus area  for triangle with coordinate  (−8,3) ,(-8, -2)and (−4,−2) is 20 unit²

Similarly, for triangle with coordinate  (−8,3) ,(-4,-4)and (−4,−2)

Area is given by

thus area  for triangle with coordinate  (−8,3) ,(-8, -2)and (−4,−2) is 4 unit²

Similarly, for triangle with coordinate  (−1,1) ,(-4,-4)and (−4,−2)

Area is given by

thus area  for triangle with coordinate  (−8,3) ,(-8, -2)and (−4,−2) is 3 unit²

Thus, the area of the composite figure whose vertices have the coordinates  (−8,3) , (−4,4) , (−1,1) , (−4,−2) , (−8,−2) is (20 + 4 + 3) = 27 unit²

2)

Given : The coordinates of the vertices of a polygon are (−2, −1) , (2, 3) , (4, 3) , (4, −3) , and (−1, −4) .

We have to find the perimeter of the polygon.

We first plot these point to obtain the polygon.

Using distance formula

thus, we find the distance between each two points using above formula,

we have

a)

b)

c)

d)

e)

thus, perimeter is sum of all distance is 22 units.

Thus, the perimeter of the coordinates of the vertices of a polygon are (−2, −1) , (2, 3) , (4, 3) , (4, −3) , and (−1, −4) is 22 units.

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6