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Elza [17]
2 years ago
5

18. Remove the parentheses from the following expression, and combine like terms: (a + b – c) + 3a – 2c

Mathematics
2 answers:
kvv77 [185]2 years ago
8 0

For this case we have the following expression:

(a + b + c) + 3a-2c

We eliminate parentheses:

a + b-c + 3a-2c =

We add similar terms:

a + 3a + b-c-2c =

We have that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed, then:

4a + b-3c

Answer:

4a + b-3c

Option B

daser333 [38]2 years ago
7 0

Combine (or subtract) like terms.

a + b – c + 3a – 2c

4a + b – 3c <-------------------Answer

So, Choice B.

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What is the measure of arc bc?<br> A. 76<br> B. 40<br> C. 96<br> D. 58
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_____

<em>Comment on intersecting secants</em>

When the secants intersect <em>inside</em> the circle, the angle where they cross is half the <em>sum</em> of the intercepted arcs. When they intersect <em>outside</em> the circle (as here), the angle where they meet is half the <em>difference</em> of the intercepted acs.

Sometimes it is easier to remember two related relationships than it is to remember just one of them.

4 0
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b

Step-by-step explanation:

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