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larisa86 [58]
3 years ago
11

Which sum or difference is modeled by the algebra tiles?

Mathematics
1 answer:
Anni [7]3 years ago
7 0

Answer:

Option A) (-x^2 - 2x + 4)-(x^2 + 2x +1)= -2x^2-4x +3 is modeled by the algebra tiles

Step-by-step explanation:

Given (-x^2 - 2x + 4)-(x^2 + 2x +1)= -2x^2-4x + 3

To verify that the given sum or difference is modeled by the algebra tiles

Now applying the algebraic sum operations we get

(-x^2 - 2x + 4)-(x^2 + 2x +1)=-x^2 - 2x + 4 - x^2 - 2x -1

= -2x^2-4x + 3   ( using algebraic sum operations )

Therefore (-x^2 - 2x + 4)-(x^2 + 2x +1)=-2x^2-4x + 3

Option A)  (-x^2 - 2x + 4)-(x^2 + 2x +1)=-2x^2-4x + 3 is modeled by the algebra tiles

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Given : Strands Copper wire from a manufacturer are analyzed forstrenghth and conductivity. The Results from 100 strands are as follows :

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P(A\cup B)=0.18+0.11-0.03

P(A\cup B)=0.26

c) Consider the event that a strand low conductivity and the event that the strand has a low strength. Are these tow events mutually exclusive?

Since the events the stand has low conductivity and the stand has low strength  are not mutually exclusive, since there exists some cases in which both the  events coincide. i.e. Intersection of both the events exists with probability 0.03.

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