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DanielleElmas [232]
3 years ago
13

Choose the correct simplification of (5x3 − 5x − 8) + (2x3 + 4x + 2).

Mathematics
2 answers:
irinina [24]3 years ago
7 0
5x^3 - 5x - 8 + 2x^3 + 4x + 2 

7x^3 - x - 6 (some like terms)
Inessa [10]3 years ago
5 0

Answer:

The simplified form of the given expression is 7x^3-x-6.

Step-by-step explanation:

The given expression is

(5x^3-5x-8)+(2x^3+4x+2)

5x^3-5x-8+2x^3+4x+2

Combine like terms,

(5x^3+2x^3)+(-5x+4x)+(-8+2)

7x^3+(-x)+(-6)

7x^3-x-6

Therefore the simplified form of the given expression is 7x^3-x-6.

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In 2000, the median household income was $41,990. In 2010, it was $49,445. (Source: www.census.gov.)
pochemuha

The average rate of change in the median household income over this time period is $745.5

<h3>What is the average rate of change in the median household income over this time period?</h3>

The given parameters are:

2000, the median household income was $41,990.

2010, it was $49,445.

The average rate of change in the median household income over this time period is calculated as:

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Read more about average rate of change at

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