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Lady_Fox [76]
3 years ago
9

This bar graph shows the number of hurricane in the Atlantic Basin from 2006-2011. Find the amount of change and the percent of

decrease in the number of hurricanes from 2008 to 2009 and from 2010 to 2011. Compare the amount of change and percents of decrease.

Mathematics
1 answer:
Arada [10]3 years ago
6 0

Answer:

Step-by-step explanation:

Number of hurricanes in year 2008 = 8

Number of hurricanes in year 2009 = 3

Decrease in number of hurricanes = 8 - 3 = 5

Percent of decrease in number of hurricanes = \frac{5}{8}\times 100 = 62.5%

Number of hurricanes in year 2010 = 12

Number of hurricanes in year 2011 = 7

Decrease in number of hurricanes = 12 - 7 = 5

Percentage decrease in number of hurricanes = \frac{5}{12}\times 100 = 41.7%

Decrease in numbers of hurricanes in year 2010 - 11 was same as in year 2010 - 11.

Percentage decrease in hurricanes were more in year 2008 - 09 than percentage decrease in year 2010 - 11.

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Solve the system of equations<br><br> a+s=560<br><br> 8a+3s=2905
Rasek [7]

Answer:

a=245 s=315

Step: Solve a+s=560 for a:

a+s=560

a+s=560(Add -s to both sides)

a=−s+560

Step: Substitute −s+560 for a in 8a+3s=2905:

8a+3s=2905

8(−s+560)+3s=2905

−5s+4480=2905(Simplify both sides of the equation)

−5s+4480=2905(Add -4480 to both sides)

−5s=−1575

−5s=−1575(Divide both sides by -5)

s=315

Step: Substitute 315 for s in a=−s+560:

a=−s+560

a=−315+560

a=245

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2 years ago
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Brums [2.3K]

Answer:

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7 0
3 years ago
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How can you use a number line to compare and order numbers?
miskamm [114]
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Answer:

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Step-by-step explanation:

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