Problem page a light bulb consumes 2400 watt-hours per day. how many watt-hours does it consume in 3 days and 6 hours?
1 answer:
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Recall that a dilation with center (0, 0) and scale factor maps
onto
.
Now, triangle ADE is formed by
Whereas triangle ABC is formed by
In other words, the coordinates of B and C can be obtained by multiplying by 2 the coordinates of D and E.
This means that you get ABC from ADE by dilating with center (0,0) and scale factor 2.