The answer is B, 7.6-(-1.7)=9.3
15 is the answer because 8-5 is 3 and 3 and 4 is 12 so 12 plus 3 is 15
Easy buddy...
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Step (1)
I choose a number which is x
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Step (2)
Multiplies by 90 :

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Step (3)
Adds up to -23 :

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And we're done.
Thanks for watching buddy good luck.
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Answer:
√357
Step-by-step explanation:
multiply all three numbers together and since 357 cannot be simplified it stays as a radical