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marin [14]
3 years ago
15

The following octagon is formed by removing four congruent triangles from a rectangle. What is the area of the rectangle?

Mathematics
1 answer:
Nikolay [14]3 years ago
5 0
Area of a rectangle = L x W
Length : 2 + 6 + 2 = 10
Width : 2 + 2 + 2 = 6
6 x 10 = 60cm ^2

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Circumcenter of triangle with vertices of (1,1) (1,-3) (7,-3)
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Answer:

The circumcenter is (-17/2, -15/2)

Step-by-step explanation:

To find the circumcenter, solve any two bisector equations and find out the intersection points. The given are A(1,1), B(0,2), and C(3,-2).Midpoint of AB = (1/2, 3/2)  - You can get the midpoint by getting the average of x-coordinates and y-coordinates. Slope of AB = -1Slope of perpendicular bisector = 1Equation of AB with slope 1 and the coordinates (1/2, 3/2) isy - (3/2) = (1)(x - 1/2) y = x+1Do the same for ACMidpoint of AC = (2, -1/2)Slope of AC = -3/2Slope of perpendicular bisector = 2/3Equation of AC with slope 2/3 and the coordinates (2, -1/2) isy - (-1/2) = (2/3)(x - 2) y = -11/6 + 2x/3So the perpendicular bisectors of AB and BC meety = x+1y = -11/6 + 2x/3To solve for x,(-11/6 + 2x/3) = (x+1)x= -17/2Now get y by substituting y = (-17/2) + 1y = -15/2

7 0
4 years ago
Jess takes a board that is 50 inches long and cuts it into two pieces, one of which is 16 inches longer than the other. How long
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Let x = the length of the shorter piece
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Then

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The lengths are 17in and 33in
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Step-by-step explanation:

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Step-by-step explanation:

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