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Rus_ich [418]
3 years ago
7

6. Find average of the following expressions (4-2x), (-7-3x), and (11x+6)

Mathematics
2 answers:
Softa [21]3 years ago
8 0

Answer:

2x + 1.

Step-by-step explanation:

Average = sum of the expression / number of expressions

= [(4 - 2x) + (-7 - 3x) + (11x + 6)] / 3

= (-2x - 3x + 11x + 4 - 7 + 6) / 3

= 6x + 3 / 3

= 2x + 1

svetoff [14.1K]3 years ago
7 0

Answer:

2x+1

Step-by-step explanation:

(4-2x), (-7-3x),(11x+6)

Add the three expressions

(4-2x)+ (-7-3x)+(11x+6)

Combine like terms

-2x-3x+11x+4-7+6

6x+3

Divide by the number of expressions which was 3

(6x+3)/3

2x+1

The average is 2x+1

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Answer: either 5, 5, 14

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Giselle works as a carpenter and as a blacksmith.
seropon [69]

Step-by-step explanation:

$20/hr carpenter pay

$25/hr blacksmith pay

Let c = hours working carpentry

Let b = hours working as blacksmith

c + b = 30 {equation 1}

20c + 25b = 690 {equation 2}

In equation 1 solve for one variable in terms of the other.

c = 30-b

Substitute that into equation 2:

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How do u solve to get x?
Vedmedyk [2.9K]

Step-by-step explanation:

2^(2x) - 5(2^x) = -4

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Substitute 2^x = z --> x = ln(z)/ln(2)

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4 0
3 years ago
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