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Sidana [21]
4 years ago
14

Simplify: -4a + 2(a + 9) A. -2a + 9 B. -2a + 18 C. 2a + 9 D. 2a + 18

Mathematics
2 answers:
EastWind [94]4 years ago
8 0

Answer:

B

Step-by-step explanation:

btw, * means multiply ;)

-4a + 2 * a + 2 * 9

= -4a + 2a + 18

= -2a + 18 (B)

VLD [36.1K]4 years ago
4 0

The correct answer is.....B. -2a + 18

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1000 to the fourth power(?
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Step-by-step explanation:

Answer: Raise 1000 to the power of 4

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The price of a pair of pants decreased from $49.99 to $19.95. What was the percent decrease in the price?
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Answer:

60.092%

Step-by-step explanation:

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3 0
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Step-by-step explanation:

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Thirty Mercedes and Audi participated in a 30 mile race. The average driving speed of the Mercedes and Audi were recorded. A ran
vladimir1956 [14]

Answer:

Median for sample 1 = 142

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Step-by-step explanation:

For Sample 1:

For finding median, the data is first arranged into ascending or descending order. We are arranging the data in ascending order.

120, 130, 132, 136, 139, 142, 142, 144, 156, 165, 167

The formula for calculating the term which will be median is:

Median= ((n+1)/2)

Here in sample 1, n=11

So, putting n=11 in the formula

= ((11+1)/2)

= (12/2)

=6th term

The sixth term is 142, so

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For Sample 2:

For finding median, the data is first arranged into ascending or descending order. We are arranging the data in ascending order.

112, 112, 113, 114, 125, 134, 141, 145, 146, 163, 165

The formula for calculating the term which will be median is:

Median= ((n+1)/2)

Here in sample 2, n=11

So, putting n=11 in the formula

=((11+1)/2)

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=6th term

The sixth term is 134, so

Median of sample 2=134

7 0
4 years ago
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