The price of a $250 item after successive discounts of 20% and 30% is?
1 answer:
Answer:
The price of item after successive discounts are 20% and 30% is $140.
Step-by-step explanation:
The marked price of item is $250.
Two successive discounts are 20% and 30%.
Price of item after discounts of 20% is
New price of item after first discount is $200.
Price of item after second discount, i.e., 30% is
Therefore, the price of item after successive discounts are 20% and 30% is $140.
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Part a: Reflecting a point across the x-axis, changes the sign of the y-coordinate.
Part b: Reflecting a point across the y-axis, changes the sign of the x-coordinate.
Part c: Reflecting a point across both the axes, changes the signs of both the coordinates.
Explanation:
Part a: Reflecting a point across the x-axis
The reflection is a transformation of a figure which represents a flip.
The rule for a reflection over the x -axis is given by
Hence, this represents the change of sign of the y-coordinate.
Thus, Reflecting a point across the x-axis, changes the sign of the y-coordinate.
Part b: Reflecting a point across the y-axis
The rule for a reflection over the y -axis is given by
Hence, this represents the change of sign of the x-coordinate.
Thus, Reflecting a point across the y-axis, changes the sign of the x-coordinate.
Part c: Reflecting a point across both the axes
The rule for a reflection across both the axes is given by
Hence, this represents the changes the signs of both the coordinates.
Thus, Reflecting a point across both the axes, changes the signs of both the coordinates.
Answer:
(A)= 0
(B)= 1/9
(C)= 1/36
