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kobusy [5.1K]
3 years ago
8

Josie says that (-15) XX(-15) = -156. Is she correct? How do you know?

Mathematics
1 answer:
notka56 [123]3 years ago
3 0
-21 i think is should be
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3 years ago
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Step-by-step explanation:

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<em>Additional comment</em>

You can also make the correct choice by evaluating the equation at a couple of different values of x. Convenient ones are x= -1, or 0, or +1. The value at x=0 is the y-intercept, (0, -2), which seems to be a point on all of the graphs. The value at x=1 is 3/2+4-2 = 3.5, which looks like it is only seen on graph A.

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A. all sides are congruent. :) 

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