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Genrish500 [490]
3 years ago
5

Round 55 to the nearest tenth and then divide the number by 2

Mathematics
2 answers:
motikmotik3 years ago
8 0

Answer:

30

Step-by-step explanation:

55 is closer to 60 than 40. And you divide 60 by 2 you get  30.

kvv77 [185]3 years ago
4 0

Answer:

30

Step-by-step explanation:

55 rounded to the nearest ten is 60

60/2=30

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2x^2+4x-16=0\ \ \ /:2\\\\x^2+2x-8=0\\\\a=1;\ b=2;\ c=-8\\\\\Delta=b^2-4ac\ if\ \Delta > 0\ then\ x_1=\frac{-b-\sqrt\Delta}{2a}\ and\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\Delta=2^2-4\cdot1\cdot(-8)=4+32=36;\ \sqrt\Delta=\sqrt{36}=6\\\\x_1=\frac{-2-6}{2\cdot1}=\frac{-8}{2}=-4;\ x_2=\frac{-2+6}{2\cdot1}=\frac{4}{2}=2
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