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Goryan [66]
3 years ago
12

Find the coordinates of the vertices of the triangle and compute the area of the triangle using the distance formula. (round to

the nearest integer in units2)
A) 10 units2
B) 21 units2
C) 23 units2
D) 36 units2

What is the approximate distance from point D to the origin?
A) 7 units
B) 8 units
C) 10 units
D) 13 units

Mathematics
2 answers:
harina [27]3 years ago
6 0

Question 1 - answer B

vertices of triangle are (4,-2), (1,-5) and (-3,5)

Area of triangle with vertices (x1,y1), (x2,y2) and (x3,y3)

                 = mod[ 1/2 { x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) } ]

on inserting the values, we get

area of triangle = 21 unit^2


Question 2- answer A

coordinates of D = (7,1)

To find distance from origin, we can use distance formula

Distance = sqrt [ ( x1 - x2 )^2  +  ( y1 - y2 )^2 ]

Distance = sqrt[ ( 7-0 )^2  +  ( 1-0 )^2  ]

Distance = 7.07 units

Lera25 [3.4K]3 years ago
6 0
The answer is b. 8units
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