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3 years ago

11

A penny is dropped from a point on a bridge 94 feet above the surface of the river. If the penny travels 250 feet straight down

before it lands at the bottom of the river, find the depth of the river where the penny landed.
please provide with the strategies please!!

1 answer:

DanielleElmas [232]3 years ago

6 0

Answer:

156 ft

Step-by-step explanation:

the depth of the river =

250-94 = 156 ft

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AnnyKZ [126]

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Step-by-step explanation:

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2 years ago

What happens to the sign or signs of the coordinates when you reflect a point?

elena55 [62]

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

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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

$(x, y) \rightarrow(-x, y)$

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

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3 years ago

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Step-by-step explanation:

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3 years ago

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marta [7]

Answer:

A 32.1

Step-by-step explanation:

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