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Genrish500 [490]
4 years ago
15

Part 1. Identify where the red figure is a translation or a rotation of the black figure​

Mathematics
1 answer:
statuscvo [17]4 years ago
3 0

A 90 degree counter-clockwise rotation is being done on the black figure to get the red figure.

The algebraic rule for a 90 degree counter-clockwise rotation is (x,y) \to (-y,x)

For instance, the point C = (0,1) moves to C' = (-1,0), which is shown in the graph given and also you can use the rule above to get the same coordinates. The other points A,B and D follow the same rule.

Side note: the rotation is centered at the origin (0,0). This point is fixed.

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In TVW if VW is three meters longer than TV, TW is 20 meters shorter than the sum of VW and TV, and the perimeter of TVW is 74 m
Artyom0805 [142]

Answer:

The length of VW is 25\ m

Step-by-step explanation:

we know that

The perimeter of triangle TVW is equal to

P=VW+TV+TW

we have

P=74\ m

so

74=VW+TV+TW -----> equation A

VW=TV+3 ----> equation B

TW=(VW+TV)-20 ----> equation C

substitute equation B in equation C

TW=(TV+3+TV)-20

TW=2TV-17 ----> equation D

substitute equation B and equation D in equation A

74=(TV+3)+TV+(2TV-17)

solve for TV

74=4TV-14

4TV=74+14

4TV=88

TV=22\ m

Find the value of VW

VW=TV+3 -----> VW=22+3=25\ m

Find the value of TW

TW=2TV-17 -----> TW=2(22)-17=27\ m

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Step-by-step explanation:

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