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3 years ago

11

A triangle has the following coordinates: (8,6), (4,-4), (-9,-2) After a reflection, it has the coordinates (-8,6), (-4, -4), (9

,-2). What was the line of reflection?

1 answer:

Phantasy [73]3 years ago

6 0

Answer:

The y-axis

Step-by-step explanation:

When the x coordinate changes signs but the y doesn't, it reflects across the y-axis

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In the diagram below, we have $ST = 2TR$ and $PQ = SR = 20$. Find the length $UV$.

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Answer:

12

Step-by-step explanation:

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$ST+TR=SR\\ \\2TR+TR=SR\\ \\3TR=20\\ \\TR=\dfrac{20}{3}\\ \\ST=2\cdot \dfrac{20}{3}=\dfrac{40}{3}$

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You are given a wooden block that has 4 cm on each side. Its mass is 32.4g. What is its density?

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The density of the wooden block is 0.50625g/cm^3

<h3>Density of a wood</h3>

Density is defined as the ratio of the mass to volume of a substance. The formula for calculating the density of an object is expressed as:

Density = Mass/volume

Given the following parameters

Mass = 32.4grams

Volume = 4^3 = 64 cubic centimeters

Substitute

Density = 32.4/64

Density = 0.50625g/cm^3

Hence the density of the wooden block is 0.50625g/cm^3

Learn more on density here: brainly.com/question/6838128

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