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Gennadij [26K]
3 years ago
11

Expand and simplify (5x+2)(2x-3)

Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Step-by-step explanation:

(5x + 2)(2x –3)

5x² – 15x + 4x – 6

5x² – 11x –6

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n a newspaper, it was reported that yearly robberies in Springfield were down 20% to 176 in 2011 from 2010. How many robberies w
Ede4ka [16]

Answer: There were 220 robberies in Springfield in 2010

Step-by-step explanation: If the robberies were reported to be down 20% and the new figure is 176, it simply means the figure 176 depicts 80% (or 0.8) of the figure from year 2010.

We shall take the figure in year 2010 as x, which is 100% (or 1.0) and year 2011 is 176 which is 80% (or 0.8). What we now have is;

176/x = 0.8

176/x = 4/5

By cross multiplication we now have;

(176 x 5)/4 = x

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220 = x

Therefore, there were 220 robberies in Springfield in 2010

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3 years ago
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Answer:

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3 years ago
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