(–2, –3) is the image produced by applying the composition T -2.4 rx to a point. What are the coordinates of the preimage?
2 answers:
Answer:
D. (0,7)
Step-by-step explanation:
We are given that,
The point (-2,-3) is transformed by the composition .
That is, the point is first reflected across x-axis and then translated 2 units to the left and 4 units up.
<h3>So, the rule for the transformation is (x,y) → (x,-y) → (x+2,-y+4)</h3>Thus, the image of (-2,-3) is given by,
(-2,-3) → (-2,3) → (-2+2,3+4) = (0,7)
That is, the image of (-2,-3) after transformation is (0,7).
So, option D is correct.
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Answer:56.8 inches
Step-by-step explanation:
For perimeter we must find the lengths of the 2 diagonal sides of the triangle which are the same because it is isosceles.
the triangle is cut directly in half so both halves of the base are 17/2
17/2 = 8.5
solve through pythagoren theorum
altitude^2 + (half of base)^2 = (diagonal length)^2
18^2 + (8.5)^2 = (diagonal length)^2
324 + 72.25 = (diagonal length)^2
396.3 = (diagonal length)^2
= diagonal length
diagonal length = 19.9
diagonal length + diagonal length + base = perimeter
19.9 + 19.9 + 17 = perimeter
56.8 inches = perimeter