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hoa [83]
3 years ago
11

15. Which expression can go in the blank to make the equation true?

Mathematics
1 answer:
topjm [15]3 years ago
6 0
The answer is A
-6.9+6.8 is equal to -0.1, and -5.4+5.5 is 0.1. If you add those two together, you get zero.
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Read 2 more answers
**The expression (3x^2 + 5x - 12) - 2(x^2 + 4x + 9) is equivalent to which of the following?​
kramer

Answer:

x^2 - 3x - 30

Step-by-step explanation:

step 1: -9   +   -1   =   -10    

-3   +   -3   =   -6     

-1   +   -9   =   -10    

1   +   9   =   10    

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No two factors can be found

Trinomial can not be factored

step 2: ((3x2 + 5x) - 12) - 2 • (x2 + 4x + 9)

step 3: -30 + 1 = -29

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so the answer is x^2-3x-30

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3 years ago
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4 0
4 years ago
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