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Aleks [24]
2 years ago
5

1/2(6+3p)-3/4(8-10p)Expand and simplify show all steps

Mathematics
1 answer:
olganol [36]2 years ago
7 0
\frac{6+3p}{2} -  \frac{3}{4} (8 - 10p) \\ \\  \frac{6 + 3p}{2} -  \frac{3(8-10p)}{4} \\ \\   \frac{6+3p}{2} -  \frac{3 \times 2(4 - 5p)}{4} \\ \\  \frac{6+3p}{2} -  \frac{6(4-5p)}{4} \\ \\  \frac{6+3p}{2} -  \frac{3(4-5p)}{2}  \\ \\  \frac{6+3p - 3(4-5p)}{2} \\ \\   \frac{3(2 +p - 4 + 5p}{2} \\ \\  \frac{3(2 + (p + 5p) - 4)}{2} \\ \\  \frac{3(2+6p-4)}{2} \\ \\  \frac{3 \times 2 (1 + 3p-2)}{2} \\ \\  \frac{3 \times 2(3p - 1)}{2} \\ \\  \frac{6(3p -1 }{2} \\ \\ 3(3p - 1) \\ \\ Answer: \fbox {3(3p-1)}
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Step-by-step explanation:

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a^2=b^2+c^2-2bc\cos A\\\\a^2=200^2+300^2-2\times 200\times 300\cos 50\textdegree\\\\a^2=40000+90000-120000\cos 50\textdegree\\\\a^2=130000-120000\times 0.64\\\\a^2=130000-76800\\\\a^2=53200\\\\a=\sqrt{53200}\\\\a=230.65\ miles\ per\ hour

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Distance=\frac{Speed}{time}=\frac{230.65}{1}=230.65\ miles

So, the distance between them is 230.65 miles.

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Step-by-step explanation:

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