![batmanmarie2004](/avatars/34976.jpg)
batmanmarie2004
14.07.2019 •
Mathematics
Which of the following transformations will result in an image that maps onto itself? a. rotate 180 degrees counterclockwise and then rotate 90 degrees clockwiseb. reflect across a line and then reflect again across the linec. rotate 270 degrees counterclockwise and the translate 5 units leftd. reflect across the x-axis and then reflect across the y-axis
Solved
Show answers
More tips
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
Answers on questions: Mathematics
- H History who love bts if you only watch them sometimes don t answer if you don t watch them don t answer this if for the people that watch them and love them...
- M Mathematics A tree casts a shadow that is 135 feet long. If the angle of elevation from the tip of the shadow to the top of the tree is 49 degrees, how tall is the tree to the nearest...
- B Biology Please help me fast and show all your work please thx...
Ответ:
General Idea:
Reflection Rules:
The reflection of the point (x,y) across the x-axis is the point (x,-y).
The reflection of the point (x,y) across the y-axis is the point (-x,y).
The reflection of the point (x,y) across the line is the point (y, x)
Rotation Rules:
The 90 degree counterclockwise rotation about the origin of a point (x, y) is the point (-y, x)
The 180 degree counterclockwise rotation about the origin of a point (x, y) is the point (-x, -y)
The 270 degree counterclockwise rotation about the origin of a point (x, y) is the point (y, -x)
The 90 degree clockwise rotation about the origin of a point (x, y) is the point (y, -x)
The 180 degree clockwise rotation about the origin of a point (x, y) is the point (-x, -y)
The 270 degree clockwise rotation about the origin of a point (x, y) is the point (-y, x)
Applying the concept:
Say if we have a point (x, y)
After we "Rotate 180 degrees counterclockwise" the point becomes (-x, -y) and after we perform the transformation "rotate 90 degrees clockwise" the point becomes (-y, x). So transformation described in Option A WILL NOT result in an image that maps onto itself.
After we "Reflect across a line" the point becomes (y, x) and after we "then reflect again across the line" the point (y, x) becomes (x, y). So transformation described in Option B WILL result in an image that maps onto itself.
After we "rotate 270 degrees counterclockwise" the point becomes (y, -x) and after we " translate 5 units left" the point (y, -x) becomes (y - 5, -x). So transformation described in Option C WILL NOT result in an image that maps onto itself.
After we "reflect across the x-axis" the point becomes (x, -y) and after we "reflect across the y-axis" the point (x, -y) becomes (-x, -y). So transformation described in Option D WILL NOT result in an image that maps onto itself.
Conclusion:
The answer is option B. The following transformation of "reflect across a line and then reflect again across the line" will result in an image that maps onto itself.
Ответ:
Let us assume the width of the rectangular park = x
Then
The length of the rectangular park = 2 2/3 * x mile
= 8x/3 mile
Then
Area of the rectangular park = Length * Width
2/3 = (8x/3) * x
2/3 = 8x^2/3
(2 * 3)/3 = 8x^2
2 = 8x^2
x^2 = 2/8
x^2 = 1/4
x^2 = (1/2)^2
x = 1/2
So the width of the park is 1/2 feet.