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3 years ago

If a town with a population of 1,500 doubles in size every 18 years, what will the population be 36 years from now? *

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

6000 people

Step-by-step explanation:

At time 0 there are 1500 people

It doubles every 18 years

18 years later there are 2*1500 = 3,000

18+18 = 36 years It doubles again 2*3000 = 6000

ad-work [718]3 years ago

6 0

After the first 18 years, the population of 1500 will be doubled to 3000.

After the next 18 years, making 36 years total, the population of 3000 will double to 6000.

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is (-1/2 x + 6/7) - (7/2 x - 4/7) equivalent to -4 x + 2/7 ? use the properties of operations to justify your answer

LuckyWell [14K]

Answer:

The given equation is NOT justified.

Step-by-step explanation:

Here, the given equation is $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $-4x + \frac{2}{7}$

Now, here Consider the left hand side and simplifying the left side by operating on the like terms,

⇒ $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $\frac{-1}{2}x + \frac{6}{7} - \frac{7}{2}x + \frac{4}{7} = (\frac{-1}{2}x -\frac{7}{2}x) + (\frac{6}{7} + \frac{4}{7})$

= $(\frac{-1 - 7}{2}x ) + (\frac{6 + 4}{7} ) = \frac{-8x}{2} + \frac{10}{7} \neq -4x + \frac{2}{7}$

Here, Left side of equation ≠ Right side of the equation

Hence, $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ ≠ $-4x + \frac{2}{7}$

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Solve for x 6-12x = -54

kvasek [131]

Answer:

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Luba_88 [7]

Answer:

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Step-by-step explanation:

Add like terms.

3x^2 + 10x^2 = 13x^2

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4 + 8 = 12

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hope this helps you

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Read 2 more answers