3 years ago

Louisa starts training for cross country. She records how far she can run without stopping each week.

Mathematics

2 answers:

PIT_PIT [208]3 years ago

3 0

Answer:

I need more info!

Step-by-step explanation:

tekilochka [14]3 years ago

3 0

Answer:

She needs 28 pounds

Step-by-step explanation:

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The point (2, –4) is reflected across the line y = –1. What are the coordinates of the image?

schepotkina [342]

ANSWER

The coordinates of the image are (2,2)

EXPLANATION

The mapping for a reflection across the line y=k is :

$(x,y)\to (x,2k-y)$

We want to find the image of the point (2,-4) after a reflection in the line y=-1.

In this case k=-1.

$(2, - 4)\to (2,2( - 1)- - 4)$

This simplifies to,

$(2, - 4)\to (2, - 2 + 4)$

$(2, - 4)\to (2, 2)$

Hence the image is (2,2)

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Oksana_A [137]

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What is a 40% decrease of 85?

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