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lozanna [386]
2 years ago
8

kristy asks lonnie to think of a number, add 3 to it, multiply the sum by 2 and then subtract 6 . let n stand for lonnies starti

ng number . which expression represents lonnies final number ?
Mathematics
1 answer:
geniusboy [140]2 years ago
7 0

The expression that represents Lonnie's final number is 2(x + 3) - 6

<h3>Writing an expression</h3>

From the given information, we are to write the expression that represents Lonnie's final number

From the given information,

"<em>kristy asks lonnie to think of a number, add 3 to it</em>"

Let the number be x

Then,

The statement becomes

x + 3

<em>"multiply the sum by 2</em>" we get

2×(x +3)

= 2(x + 3)

"<em> subtract 6</em>",

The expression becomes

2(x + 3) - 6

This is the expression that represents Lonnie's final number

Hence, the expression that represents Lonnie's final number is 2(x + 3) - 6

Learn more on Writing an expression here: brainly.com/question/12166019

#SPJ1

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Five years ago, the population of a city was 49,000. each year the zoning commission permits an increase of 580 in the populatio
Paladinen [302]

The maximum population be 5 year from now will be 54,800 given that five years ago, the population of a city was 49,000 and each year the zoning commission permits an increase of 580 in the population. This can be obtained using the formula of arithmetic progression.

<h3>What will the maximum population be 5 year from now?</h3>

Formula of arithmetic progression is given by,

⇒ aₙ = a + (n - 1)d

where aₙ = nth term, a = first term, d = common difference

Here in the question it is given that,

  • Five years ago, the population of a city was 49,000
  • Each year the zoning commission permits an increase of 580 in the population

   

We have to find out the maximum population in 5 year from now.

By using the formula of arithmetic progression we get,

aₙ = a + (n - 1)d,

here in the question,

  • a = 49,000,
  • n = five years ago + current year + five years from now ⇒ n = 5 + 1 + 5         ⇒ n = 11g
  • d = 580

Now we get,

⇒ aₙ = a + (n - 1)d

⇒ aₙ = 49000 + (11 - 1)580

⇒ aₙ = 49000 + (10)580

⇒ aₙ = 49000 + 5800

⇒ aₙ = 54,800

Hence the maximum population be 5 year from now will be 54,800 given that five years ago, the population of a city was 49,000 and each year the zoning commission permits an increase of 580 in the population.

Learn more about arithmetic progression here:

brainly.com/question/16954227

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Answer:

A

Step-by-step explanation:

A= r(pi)^2

A= 9 pi ^2

Hope it helps!

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3 years ago
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